com php-src: Deprecate __autoload(): Zend/tests/bug 26697.phpt Zend/tests/bug31102.phpt Zend/tests/bug33116.phpt Zend/tests/bug37 138.phpt Zend/tests/bug39003.phpt Zend/ tests/bug39542.phpt Zend/tests/bug42798 .phpt Zend/tests/bug46665.phpt Zend/tests/bug 47714.phpt Zend/tests/bug49908.phpt Zend/tests/bug55007.phpt Zend/tests/bug61 011.phpt Zend/tests/bug62907.phpt Zend/ tests/bug63305.phpt Zend/tests/bug65254 .phpt Zend/tests/bug71163.phpt Zend/tests/ca

diff --git a/Zend/tests/bug26697.phpt b/Zend/tests/bug26697.phpt
index 8266a23..8dda170 100644
--- a/Zend/tests/bug26697.phpt
+++ b/Zend/tests/bug26697.phpt
@@ -1,24 +1,21 @@
 --TEST--
 Bug #26697 (calling class_exists on a nonexistent class in __autoload results in segfault)
---SKIPIF--
-<?php if (function_exists('__autoload')) die('skip __autoload() declared in auto_prepend_file');?>
 --FILE--
 <?php
 
-function __autoload($name)
-{
+spl_autoload_register(function ($name) {
 	echo __METHOD__ . "($name)\n";
 	var_dump(class_exists('NotExistingClass'));
 	echo __METHOD__ . "($name), done\n";
-}
+});
 
 var_dump(class_exists('NotExistingClass'));
 
 ?>
 ===DONE===
 --EXPECTF--
-__autoload(NotExistingClass)
+{closure}(NotExistingClass)
 bool(false)
-__autoload(NotExistingClass), done
+{closure}(NotExistingClass), done
 bool(false)
 ===DONE===
diff --git a/Zend/tests/bug31102.phpt b/Zend/tests/bug31102.phpt
index 5de01f7..fd6da0f 100644
--- a/Zend/tests/bug31102.phpt
+++ b/Zend/tests/bug31102.phpt
@@ -5,8 +5,7 @@ Bug #31102 (Exception not handled when thrown inside __autoload())
 
 $test = 0;
 
-function __autoload($class)
-{
+spl_autoload_register(function ($class) {
 	global $test;
 
 	echo __METHOD__ . "($class,$test)\n";
@@ -22,7 +21,7 @@ function __autoload($class)
 	case 3:
 		return;
 	}
-}
+});
 
 while($test++ < 5)
 {
@@ -39,11 +38,11 @@ while($test++ < 5)
 ===DONE===
 <?php exit(0); ?>
 --EXPECTF--
-__autoload(Test1,1)
+{closure}(Test1,1)
 Caught: Test1::__construct
-__autoload(Test2,2)
-Caught: __autoload
-__autoload(Test3,3)
+{closure}(Test2,2)
+Caught: {closure}
+{closure}(Test3,3)
 
 Fatal error: Uncaught Error: Class 'Test3' not found in %sbug31102.php(%d) : eval()'d code:1
 Stack trace:
diff --git a/Zend/tests/bug33116.phpt b/Zend/tests/bug33116.phpt
index aa714a1..13aae66 100644
--- a/Zend/tests/bug33116.phpt
+++ b/Zend/tests/bug33116.phpt
@@ -2,11 +2,10 @@
 Bug #33116 (crash when assigning class name to global variable in __autoload)
 --FILE--
 <?php
-function __autoload($class)
-{
+spl_autoload_register(function ($class) {
   $GLOBALS['include'][] = $class;
   eval("class DefClass{}");
-}
+});
 
 $a = new DefClass;
 print_r($a);
diff --git a/Zend/tests/bug37138.phpt b/Zend/tests/bug37138.phpt
index f8503f8..e39ad19 100644
--- a/Zend/tests/bug37138.phpt
+++ b/Zend/tests/bug37138.phpt
@@ -2,7 +2,7 @@
 Bug #37138 (__autoload tries to load callback'ed self and parent)
 --FILE--
 <?php
-function __autoload ($CN) {var_dump ($CN);}
+spl_autoload_register(function ($CN) { var_dump ($CN); });
 class st {
 	public static function e () {echo ("EHLO\n");}
 	public static function e2 () {call_user_func (array ('self', 'e'));}
diff --git a/Zend/tests/bug39003.phpt b/Zend/tests/bug39003.phpt
index add1451..01761fa 100644
--- a/Zend/tests/bug39003.phpt
+++ b/Zend/tests/bug39003.phpt
@@ -10,10 +10,9 @@ class ClassName
 
 function test (OtherClassName $object) { }
 
-function __autoload($class)
-{
+spl_autoload_register(function ($class) {
     var_dump("__autload($class)");
-}
+});
 
 $obj = new ClassName;
 test($obj);
diff --git a/Zend/tests/bug39542.phpt b/Zend/tests/bug39542.phpt
index 13ddc0a..2008fe1 100644
--- a/Zend/tests/bug39542.phpt
+++ b/Zend/tests/bug39542.phpt
@@ -10,11 +10,11 @@ if (substr(PHP_OS, 0, 3) == 'WIN') {
 	set_include_path(dirname(__FILE__).'/bug39542:.');
 }
 
-function __autoload($class) {
+spl_autoload_register(function ($class) {
     if (!require_once($class.'.php')) {
         error_log('Error: Autoload class: '.$class.' not found!');
     }
-}
+});
 
 new bug39542();
 
diff --git a/Zend/tests/bug42798.phpt b/Zend/tests/bug42798.phpt
index 1c45867..1141a30 100644
--- a/Zend/tests/bug42798.phpt
+++ b/Zend/tests/bug42798.phpt
@@ -2,10 +2,10 @@
 Bug #42798 (_autoload() not triggered for classes used in method signature)
 --FILE--
 <?php
-function __autoload($className) {
+spl_autoload_register(function ($className) {
     print "$className\n";
     exit();
-}
+});
 
 function foo($c = ok::constant) {
 }
diff --git a/Zend/tests/bug46665.phpt b/Zend/tests/bug46665.phpt
index 1f82454..954dbfa 100644
--- a/Zend/tests/bug46665.phpt
+++ b/Zend/tests/bug46665.phpt
@@ -3,12 +3,13 @@ Bug #46665 (Triggering autoload with a variable classname causes truncated autol
 --FILE--
 <?php
 
-$baz = '\\Foo\\Bar\\Baz';
-new $baz();
-function __autoload($class) {
+spl_autoload_register(function ($class) {
     var_dump($class);
     require __DIR__ .'/bug46665_autoload.inc';
-}
+});
+
+$baz = '\\Foo\\Bar\\Baz';
+new $baz();
 
 ?>
 --EXPECTF--
diff --git a/Zend/tests/bug47714.phpt b/Zend/tests/bug47714.phpt
index e8ef8c3..546da44 100644
--- a/Zend/tests/bug47714.phpt
+++ b/Zend/tests/bug47714.phpt
@@ -10,11 +10,7 @@ function au($class) {
               }');
 }
 
-function __autoload($class) {
-        au($class);
-}
-
-//spl_autoload_register('au');
+spl_autoload_register('au');
 
 set_exception_handler(function($exception) {
         $h = new handler();
diff --git a/Zend/tests/bug49908.phpt b/Zend/tests/bug49908.phpt
index 4f2b5b7..6999b9e 100644
--- a/Zend/tests/bug49908.phpt
+++ b/Zend/tests/bug49908.phpt
@@ -3,7 +3,7 @@ Bug #49908 (throwing exception in __autoload crashes when interface is not defin
 --FILE--
 <?php
 
-function __autoload($className) {
+spl_autoload_register(function ($className) {
 	var_dump($className);
 	
 	if ($className == 'Foo') {
@@ -11,7 +11,7 @@ function __autoload($className) {
 	} else {
 		throw new Exception($className);
 	}
-}
+});
 
 new Foo;
 
@@ -22,7 +22,9 @@ string(3) "Bar"
 
 Fatal error: Uncaught Exception: Bar in %s:%d
 Stack trace:
-#0 %s(7): __autoload('Bar')
-#1 %s(13): __autoload('Foo')
-#2 {main}
+#0 [internal function]: {closure}('Bar')
+#1 %s(%d): spl_autoload_call('Bar')
+#2 [internal function]: {closure}('Foo')
+#3 %s(%d): spl_autoload_call('Foo')
+#4 {main}
   thrown in %s on line %d
diff --git a/Zend/tests/bug55007.phpt b/Zend/tests/bug55007.phpt
index 425ce8f..c3fb3c4 100644
--- a/Zend/tests/bug55007.phpt
+++ b/Zend/tests/bug55007.phpt
@@ -3,10 +3,10 @@ Bug #55007 (compiler fail after previous fail)
 --FILE--
 <?php
 
-function __autoload($classname) {
+spl_autoload_register(function ($classname) {
   if ('CompileErrorClass'==$classname) eval('class CompileErrorClass { function foo() { $a[]; } }');
   if ('MyErrorHandler'==$classname) eval('class MyErrorHandler { function __construct() { print "My error handler runs.\n"; } }');
-}
+});
 
 function shutdown() {
   new MyErrorHandler();
diff --git a/Zend/tests/bug61011.phpt b/Zend/tests/bug61011.phpt
index bce0e33..1e91a55 100644
--- a/Zend/tests/bug61011.phpt
+++ b/Zend/tests/bug61011.phpt
@@ -2,9 +2,10 @@
 Bug #61011 (Crash when an exception is thrown by __autoload accessing a static property)
 --FILE--
 <?php
-function __autoload($name) {
+spl_autoload_register(function ($name) {
 	throw new Exception($name);
-}
+});
+
 try { 
 	echo AAA::$a; //zend_fetch_var_address_helper
 } catch (Exception $e) {
diff --git a/Zend/tests/bug62907.phpt b/Zend/tests/bug62907.phpt
index 53ab17c..c47c34b 100644
--- a/Zend/tests/bug62907.phpt
+++ b/Zend/tests/bug62907.phpt
@@ -2,7 +2,7 @@
 Bug #62907 (Double free when use traits)
 --FILE--
 <?php
-function __autoload($name) {
+spl_autoload_register(function ($name) {
     if ($name == "B") {
         eval ("abstract class B extends A { }");
     } else if ($name == "A") {
@@ -11,7 +11,7 @@ function __autoload($name) {
         eval ("trait T { public function __construct() { } }"); 
     } 
     return TRUE;
-} 
+});
 
 class C extends B {
     public function __construct() {
diff --git a/Zend/tests/bug63305.phpt b/Zend/tests/bug63305.phpt
index 4bd3a4d..bd18ccb 100644
--- a/Zend/tests/bug63305.phpt
+++ b/Zend/tests/bug63305.phpt
@@ -2,9 +2,8 @@
 Bug #63305 (zend_mm_heap corrupted with traits)
 --FILE--
 <?php
-new Attachment("");
 
-function __autoload($class) {
+spl_autoload_register(function ($class) {
     switch ($class) {
     case "Attachment":
         eval(<<<'PHP'
@@ -36,7 +35,9 @@ PHP
         break;
     }
     return TRUE;
-}
+});
+
+new Attachment("");
 echo "okey";
 ?>
 --EXPECT--
diff --git a/Zend/tests/bug65254.phpt b/Zend/tests/bug65254.phpt
index d2ebba4..d58759b 100644
--- a/Zend/tests/bug65254.phpt
+++ b/Zend/tests/bug65254.phpt
@@ -2,12 +2,11 @@
 Bug #65254 (Exception not catchable when exception thrown in autoload with a namespace)
 --FILE--
 <?php
-function __autoload($class)
-{
+spl_autoload_register(function ($class) {
     eval("namespace ns_test; class test {}");
 
     throw new \Exception('abcd');
-}
+});
 
 try
 {
diff --git a/Zend/tests/bug71163.phpt b/Zend/tests/bug71163.phpt
index 102b1b9..2f6cbd5 100644
--- a/Zend/tests/bug71163.phpt
+++ b/Zend/tests/bug71163.phpt
@@ -2,10 +2,10 @@
 Bug #71163 (Segmentation Fault (cleanup_unfinished_calls))
 --FILE--
 <?php
-function __autoload($name) { 
+spl_autoload_register(function ($name) { 
 	eval ("class $name extends Exception { public static function foo() {}}");
 	throw new Exception("boom");
-}
+});
 
 function test2() {
 	try {
diff --git a/Zend/tests/call_user_func_002.phpt b/Zend/tests/call_user_func_002.phpt
index 0bf3d39..454c6fd 100644
--- a/Zend/tests/call_user_func_002.phpt
+++ b/Zend/tests/call_user_func_002.phpt
@@ -3,9 +3,9 @@ Testing call_user_func() with autoload and passing invalid params
 --FILE--
 <?php
 
-function __autoload($class) {
+spl_autoload_register(function ($class) {
 	var_dump($class);
-}
+});
 
 call_user_func(array('foo', 'bar'));
 call_user_func(array('', 'bar'));
diff --git a/Zend/tests/catch.phpt b/Zend/tests/catch.phpt
index 0ec5cf7..a83dd75 100644
--- a/Zend/tests/catch.phpt
+++ b/Zend/tests/catch.phpt
@@ -2,11 +2,11 @@
 catch shouldn't call __autoload
 --FILE--
 <?php
-function __autoload($name) {
+
+spl_autoload_register(function ($name) {
 	echo("AUTOLOAD '$name'\n");
 	eval("class $name {}");
-}
-
+});
 
 try {
 } catch (A $e) {
diff --git a/Zend/tests/class_alias_007.phpt b/Zend/tests/class_alias_007.phpt
index 247398e..edcc096 100644
--- a/Zend/tests/class_alias_007.phpt
+++ b/Zend/tests/class_alias_007.phpt
@@ -3,9 +3,9 @@ Testing class_alias() using autoload
 --FILE--
 <?php
 
-function __autoload($a) {
+spl_autoload_register(function ($a) {
 	class foo { }
-}
+});
 
 class_alias('foo', 'bar', 1);
 
diff --git a/Zend/tests/instanceof.phpt b/Zend/tests/instanceof.phpt
index 8bcbede..97d67ff 100644
--- a/Zend/tests/instanceof.phpt
+++ b/Zend/tests/instanceof.phpt
@@ -2,10 +2,10 @@
 instanceof shouldn't call __autoload
 --FILE--
 <?php
-function __autoload($name) {
+spl_autoload_register(function ($name) {
 	echo("AUTOLOAD '$name'\n");
 	eval("class $name {}");
-}
+});
 
 class A {
 }
diff --git a/Zend/tests/is_a.phpt b/Zend/tests/is_a.phpt
index f4161f2..3714d50 100644
--- a/Zend/tests/is_a.phpt
+++ b/Zend/tests/is_a.phpt
@@ -4,10 +4,10 @@ is_a() and is_subclass_of() shouldn't call __autoload
 error_reporting=14335
 --FILE--
 <?php
-function __autoload($name) {
+spl_autoload_register(function ($name) {
 	echo("AUTOLOAD '$name'\n");
 	eval("class $name {}");
-}
+});
 
 class BASE {
 }
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index c289fef..9a904ee 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -5523,11 +5523,13 @@ static void zend_begin_func_decl(znode *result, zend_op_array *op_array, zend_as
 		}
 	}
 
-	if (zend_string_equals_literal(lcname, ZEND_AUTOLOAD_FUNC_NAME)
-		&& zend_ast_get_list(params_ast)->children != 1
-	) {
-		zend_error_noreturn(E_COMPILE_ERROR, "%s() must take exactly 1 argument",
-			ZEND_AUTOLOAD_FUNC_NAME);
+	if (zend_string_equals_literal(lcname, ZEND_AUTOLOAD_FUNC_NAME)) {
+		if (zend_ast_get_list(params_ast)->children != 1) {
+			zend_error_noreturn(E_COMPILE_ERROR, "%s() must take exactly 1 argument",
+				ZEND_AUTOLOAD_FUNC_NAME);
+		}
+
+		zend_error(E_DEPRECATED, "__autoload() is deprecated, use spl_autoload_register() instead");
 	}
 
 	key = zend_build_runtime_definition_key(lcname, decl->lex_pos);
diff --git a/ext/phar/tests/fatal_error_webphar.phpt b/ext/phar/tests/fatal_error_webphar.phpt
index dd6e096..3db8634 100644
--- a/ext/phar/tests/fatal_error_webphar.phpt
+++ b/ext/phar/tests/fatal_error_webphar.phpt
@@ -13,6 +13,7 @@ files/pear2coverage.phar.php
 --EXPECTHEADERS--
 Content-type: text/html; charset=UTF-8
 --EXPECTF--
+Deprecated: __autoload() is deprecated, use spl_autoload_register() instead in %s on line %d
 string(9) "\Web\View"
 
 Parse error: syntax error, unexpected %s, expecting %s in phar://%r([A-Za-z]:)?%r/%sfatal_error_webphar.php/Web/View.php on line 380
diff --git a/ext/reflection/tests/007.phpt b/ext/reflection/tests/007.phpt
index d920417..8dfc2e8 100644
--- a/ext/reflection/tests/007.phpt
+++ b/ext/reflection/tests/007.phpt
@@ -53,10 +53,9 @@ function test($class)
 	echo "\n";
 }
 
-function __autoload($class)
-{
+spl_autoload_register(function ($class) {
 	echo __FUNCTION__ . "($class)\n";
-}
+});
 
 test('Class_does_not_exist');
 
@@ -94,7 +93,7 @@ test('WithCtorWithArgs');
 --EXPECTF--
 
 ====>Class_does_not_exist
-__autoload(Class_does_not_exist)
+{closure}(Class_does_not_exist)
 string(41) "Class Class_does_not_exist does not exist"
 ====>NoCtor
 ====>newInstance()
diff --git a/ext/reflection/tests/bug26640.phpt b/ext/reflection/tests/bug26640.phpt
index e375fd4..8a93d72 100644
--- a/ext/reflection/tests/bug26640.phpt
+++ b/ext/reflection/tests/bug26640.phpt
@@ -3,8 +3,7 @@ Reflection Bug #26640 (__autoload() not invoked by Reflection classes)
 --FILE--
 <?php
 
-function __autoload($c)
-{
+spl_autoload_register(function ($c) {
 	class autoload_class
 	{
 		public function __construct()
@@ -12,7 +11,7 @@ function __autoload($c)
 			print "autoload success\n";
 		}
 	}
-}
+});
 
 $a = new ReflectionClass('autoload_class');
 
diff --git a/ext/reflection/tests/bug29268.phpt b/ext/reflection/tests/bug29268.phpt
index d8efc0b..0ab7e33 100644
--- a/ext/reflection/tests/bug29268.phpt
+++ b/ext/reflection/tests/bug29268.phpt
@@ -2,10 +2,10 @@
 Reflection Bug #29268 (__autoload() not called with reflectionProperty->getClass())
 --FILE--
 <?php
-function __autoload($classname) {
+spl_autoload_register(function ($classname) {
 	echo "__autoload($classname)\n";
 	eval("class $classname {}");
-}
+});
 
 class B{
 	public function doit(A $a){
diff --git a/ext/soap/tests/bugs/bug28751.phpt b/ext/soap/tests/bugs/bug28751.phpt
index 697ebd8..88187eb 100644
--- a/ext/soap/tests/bugs/bug28751.phpt
+++ b/ext/soap/tests/bugs/bug28751.phpt
@@ -4,13 +4,13 @@ Bug #28751 (SoapServer does not call _autoload())
 <?php require_once('skipif.inc'); ?>
 --FILE--
 <?php
-function __autoload($className) {
+spl_autoload_register(function ($className) {
 	class SoapServerActions {
     function test() {
       return "Hello World";
     }
 	}
-}
+});
 
 $server = new SoapServer(NULL, array('uri'=>"http://testuri.org"));
 $server->setClass("SoapServerActions");
diff --git a/ext/spl/tests/class_implements_variation.phpt b/ext/spl/tests/class_implements_variation.phpt
index 84a52ab..4d9e886 100644
--- a/ext/spl/tests/class_implements_variation.phpt
+++ b/ext/spl/tests/class_implements_variation.phpt
@@ -15,15 +15,14 @@ class fs {}
 var_dump(class_implements(new fs));
 var_dump(class_implements('fs'));
 
+spl_autoload_register(function ($classname) {
+   echo "attempting to autoload $classname\n";
+});
+
 echo "\n--- testing autoload ---\n";
 var_dump(class_implements('non_existent'));
 var_dump(class_implements('non_existent2', false));
 
-
-function __autoload($classname) {
-   echo "attempting to autoload $classname\n";
-}
-
 ?>
 ===DONE===
 --EXPECTF--
diff --git a/ext/spl/tests/class_uses_variation.phpt b/ext/spl/tests/class_uses_variation.phpt
index 1a13521..3424e13 100644
--- a/ext/spl/tests/class_uses_variation.phpt
+++ b/ext/spl/tests/class_uses_variation.phpt
@@ -15,15 +15,14 @@ class fs {}
 var_dump(class_uses(new fs));
 var_dump(class_uses('fs'));
 
+spl_autoload_register(function ($classname) {
+   echo "attempting to autoload $classname\n";
+});
+
 echo "\n--- testing autoload ---\n";
 var_dump(class_uses('non_existent'));
 var_dump(class_uses('non_existent2', false));
 
-
-function __autoload($classname) {
-   echo "attempting to autoload $classname\n";
-}
-
 ?>
 ===DONE===
 --EXPECTF--
diff --git a/ext/spl/tests/spl_003.phpt b/ext/spl/tests/spl_003.phpt
index e92a41a..3dd9ab3 100644
--- a/ext/spl/tests/spl_003.phpt
+++ b/ext/spl/tests/spl_003.phpt
@@ -2,6 +2,11 @@
 SPL: class_parents() and class_implements()
 --FILE--
 <?php
+
+spl_autoload_register(function ($cname) {
+    var_dump($cname);
+});
+
 class a{}
 class b extends a{}
 class c extends b{}
@@ -24,10 +29,6 @@ var_dump(class_implements(new a),
          class_implements("bbb", 0)
 );
 
-function __autoload($cname) {
-    var_dump($cname);
-}
-
 ?>
 ===DONE===
 <?php exit(0); ?>
diff --git a/ext/standard/incomplete_class.c b/ext/standard/incomplete_class.c
index db9b25e..252a9cb 100644
--- a/ext/standard/incomplete_class.c
+++ b/ext/standard/incomplete_class.c
@@ -27,8 +27,8 @@
 		"access a property of an incomplete object. " \
 		"Please ensure that the class definition \"%s\" of the object " \
 		"you are trying to operate on was loaded _before_ " \
-		"unserialize() gets called or provide a __autoload() function " \
-		"to load the class definition "
+		"unserialize() gets called or provide an autoloader " \
+		"to load the class definition"
 
 static zend_object_handlers php_incomplete_object_handlers;
 
diff --git a/ext/standard/tests/class_object/class_exists_basic_001.phpt b/ext/standard/tests/class_object/class_exists_basic_001.phpt
index 4cb6cbd..208a895 100644
--- a/ext/standard/tests/class_object/class_exists_basic_001.phpt
+++ b/ext/standard/tests/class_object/class_exists_basic_001.phpt
@@ -10,9 +10,9 @@ Test class_exists() function : basic functionality
 
 echo "*** Testing class_exists() : basic functionality ***\n";
 
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 echo "Calling class_exists() on non-existent class with autoload explicitly enabled:\n";
 var_dump( class_exists('C', true) );
@@ -34,7 +34,7 @@ echo "Done";
 --EXPECTF--
 *** Testing class_exists() : basic functionality ***
 Calling class_exists() on non-existent class with autoload explicitly enabled:
-In __autoload(C)
+In autoload(C)
 bool(false)
 
 Calling class_exists() on existing class with autoload explicitly enabled:
@@ -47,9 +47,9 @@ Calling class_exists() on existing class with autoload explicitly disabled:
 bool(true)
 
 Calling class_exists() on non-existent class with autoload unspecified:
-In __autoload(E)
+In autoload(E)
 bool(false)
 
 Calling class_exists() on existing class with autoload unspecified:
 bool(true)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/class_exists_variation_001.phpt b/ext/standard/tests/class_object/class_exists_variation_001.phpt
index 5f51b4b..b847c02 100644
--- a/ext/standard/tests/class_object/class_exists_variation_001.phpt
+++ b/ext/standard/tests/class_object/class_exists_variation_001.phpt
@@ -8,9 +8,9 @@ Test class_exists() function : usage variations - unexpected types for argument
  * Alias to functions: 
  */
 
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -88,15 +88,15 @@ Error: 8 - Undefined variable: undefined_var, %s(67)
 Error: 8 - Undefined variable: unset_var, %s(70)
 
 Arg value 0 
-In __autoload(0)
+In autoload(0)
 bool(false)
 
 Arg value 1 
-In __autoload(1)
+In autoload(1)
 bool(false)
 
 Arg value 12345 
-In __autoload(12345)
+In autoload(12345)
 bool(false)
 
 Arg value -2345 
@@ -109,7 +109,7 @@ Arg value -10.5
 bool(false)
 
 Arg value 101234567000 
-In __autoload(101234567000)
+In autoload(101234567000)
 bool(false)
 
 Arg value 1.07654321E-9 
@@ -150,14 +150,14 @@ Arg value
 bool(false)
 
 Arg value 1 
-In __autoload(1)
+In autoload(1)
 bool(false)
 
 Arg value  
 bool(false)
 
 Arg value 1 
-In __autoload(1)
+In autoload(1)
 bool(false)
 
 Arg value  
@@ -179,4 +179,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/class_exists_variation_002.phpt b/ext/standard/tests/class_object/class_exists_variation_002.phpt
index 954e4d8..ee6832c 100644
--- a/ext/standard/tests/class_object/class_exists_variation_002.phpt
+++ b/ext/standard/tests/class_object/class_exists_variation_002.phpt
@@ -8,9 +8,9 @@ Test class_exists() function : usage variations  - unexpected types for argument
  * Alias to functions: 
  */
 
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -95,35 +95,35 @@ Arg value 0
 bool(false)
 
 Arg value 1 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 12345 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value -2345 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 10.5 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value -10.5 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 101234567000 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 1.07654321E-9 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 0.5 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 Error: 8 - Array to string conversion, %sclass_exists_variation_002.php(%d)
 
@@ -158,14 +158,14 @@ Arg value
 bool(false)
 
 Arg value 1 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value  
 bool(false)
 
 Arg value 1 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value  
@@ -178,11 +178,11 @@ Arg value
 bool(false)
 
 Arg value string 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value string 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 Error: 4096 - Object of class stdClass could not be converted to string, %s(80)
 
@@ -195,4 +195,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/get_declared_classes_variation1.phpt b/ext/standard/tests/class_object/get_declared_classes_variation1.phpt
index 259f5dc..3853bb6 100644
--- a/ext/standard/tests/class_object/get_declared_classes_variation1.phpt
+++ b/ext/standard/tests/class_object/get_declared_classes_variation1.phpt
@@ -11,9 +11,9 @@ Test get_declared_classes() function : testing autoloaded classes
 
 echo "*** Testing get_declared_classes() : testing autoloaded classes ***\n";
 
-function __autoload($class_name) {
+spl_autoload_register(function ($class_name) {
     require_once $class_name . '.inc';
-}
+});
 
 echo "\n-- before instance is declared --\n";
 var_dump(in_array('AutoLoaded', get_declared_classes()));
diff --git a/ext/standard/tests/class_object/get_declared_interfaces_variation1.phpt b/ext/standard/tests/class_object/get_declared_interfaces_variation1.phpt
index 56e6161..12c92df 100644
--- a/ext/standard/tests/class_object/get_declared_interfaces_variation1.phpt
+++ b/ext/standard/tests/class_object/get_declared_interfaces_variation1.phpt
@@ -11,9 +11,9 @@ Test get_declared_interfaces() function : autoloading of interfaces
 
 echo "*** Testing get_declared_interfaces() : autoloading of interfaces ***\n";
 
-function __autoload($class_name) {
+spl_autoload_register(function ($class_name) {
     require_once $class_name . '.inc';
-}
+});
 
 echo "\n-- before interface is used --\n";
 var_dump(in_array('AutoInterface', get_declared_interfaces()));
diff --git a/ext/standard/tests/class_object/get_declared_traits_variation1.phpt b/ext/standard/tests/class_object/get_declared_traits_variation1.phpt
index bedd37a..6ea3edf 100644
--- a/ext/standard/tests/class_object/get_declared_traits_variation1.phpt
+++ b/ext/standard/tests/class_object/get_declared_traits_variation1.phpt
@@ -11,9 +11,9 @@ Test get_declared_traits() function : testing autoloaded traits
 
 echo "*** Testing get_declared_traits() : testing autoloaded traits ***\n";
 
-function __autoload($trait_name) {
+spl_autoload_register(function ($trait_name) {
     require_once $trait_name . '.inc';
-}
+});
 
 echo "\n-- before instance is declared --\n";
 var_dump(in_array('AutoTrait', get_declared_traits()));
diff --git a/ext/standard/tests/class_object/get_parent_class_variation_002.phpt b/ext/standard/tests/class_object/get_parent_class_variation_002.phpt
index 0d19e22..97f8481 100644
--- a/ext/standard/tests/class_object/get_parent_class_variation_002.phpt
+++ b/ext/standard/tests/class_object/get_parent_class_variation_002.phpt
@@ -8,9 +8,9 @@ Test get_parent_class() function : usage variations  - unexpected argument type.
  * Alias to functions: 
  */
 
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -160,11 +160,11 @@ Arg value
 bool(false)
 
 Arg value string 
-In __autoload(string)
+In autoload(string)
 bool(false)
 
 Arg value String 
-In __autoload(String)
+In autoload(String)
 bool(false)
 Error: 4096 - Object of class stdClass could not be converted to string, %s(77)
 
@@ -176,4 +176,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/interface_exists_variation3.phpt b/ext/standard/tests/class_object/interface_exists_variation3.phpt
index d25d74b..5119945 100644
--- a/ext/standard/tests/class_object/interface_exists_variation3.phpt
+++ b/ext/standard/tests/class_object/interface_exists_variation3.phpt
@@ -10,9 +10,9 @@ Test interface_exists() function : autoloaded interface
 
 echo "*** Testing interface_exists() : autoloaded interface ***\n";
 
-function __autoload($class_name) {
+spl_autoload_register(function ($class_name) {
     require_once $class_name . '.inc';
-}
+});
 
 echo "\n-- no autoloading --\n";
 var_dump(interface_exists("AutoInterface", false));
@@ -32,4 +32,4 @@ bool(false)
 -- with autoloading --
 bool(true)
 
-DONE
\ No newline at end of file
+DONE
diff --git a/ext/standard/tests/class_object/interface_exists_variation4.phpt b/ext/standard/tests/class_object/interface_exists_variation4.phpt
index c059805..ca78739 100644
--- a/ext/standard/tests/class_object/interface_exists_variation4.phpt
+++ b/ext/standard/tests/class_object/interface_exists_variation4.phpt
@@ -10,10 +10,9 @@ Test interface_exists() function : test autoload default value
 
 echo "*** Testing interface_exists() : test autoload default value ***\n";
 
-function __autoload($class_name) {
+spl_autoload_register(function ($class_name) {
     require_once $class_name . '.inc';
-}
-
+});
 
 var_dump(interface_exists("AutoInterface"));
 
@@ -24,4 +23,4 @@ echo "\nDONE\n";
 *** Testing interface_exists() : test autoload default value ***
 bool(true)
 
-DONE
\ No newline at end of file
+DONE
diff --git a/ext/standard/tests/class_object/is_a.phpt b/ext/standard/tests/class_object/is_a.phpt
index db74cdc..99794ca 100644
--- a/ext/standard/tests/class_object/is_a.phpt
+++ b/ext/standard/tests/class_object/is_a.phpt
@@ -60,13 +60,10 @@ $t->test();
 $t = new derived_a();
 $t->test();
 
-eval('
-  function __autoload($name)
-  {
-      echo ">>>> In __autoload: ";
-      var_dump($name);
-  }
-');
+spl_autoload_register(function ($name) {
+    echo ">>>> In autoload: ";
+    var_dump($name);
+});
 
 echo "NOW WITH AUTOLOAD\n\n";
 
@@ -201,11 +198,11 @@ is_subclass_of( OBJECT:base, base) =                        no
 is_subclass_of( STRING:base, base) =                        no
 is_subclass_of( STRING:base, base,false) =                  no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, base,true) =                           no
 is_a( STRING:undefB, base) =                                no
 is_subclass_of( STRING:undefB, base,false) =                no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, base) =                      no
 
 >>> With Defined class
@@ -216,11 +213,11 @@ is_subclass_of( OBJECT:base, derived_a) =                   no
 is_subclass_of( STRING:base, derived_a) =                   no
 is_subclass_of( STRING:base, derived_a,false) =             no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, derived_a,true) =                      no
 is_a( STRING:undefB, derived_a) =                           no
 is_subclass_of( STRING:undefB, derived_a,false) =           no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, derived_a) =                 no
 
 >>> With Defined class
@@ -231,11 +228,11 @@ is_subclass_of( OBJECT:base, if_a) =                        no
 is_subclass_of( STRING:base, if_a) =                        no
 is_subclass_of( STRING:base, if_a,false) =                  no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, if_a,true) =                           no
 is_a( STRING:undefB, if_a) =                                no
 is_subclass_of( STRING:undefB, if_a,false) =                no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, if_a) =                      no
 
 >>> With Defined class
@@ -246,11 +243,11 @@ is_subclass_of( OBJECT:base, undefA) =                      no
 is_subclass_of( STRING:base, undefA) =                      no
 is_subclass_of( STRING:base, undefA,false) =                no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, undefA,true) =                         no
 is_a( STRING:undefB, undefA) =                              no
 is_subclass_of( STRING:undefB, undefA,false) =              no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, undefA) =                    no
 
 
@@ -262,11 +259,11 @@ is_subclass_of( OBJECT:derived_a, base) =                   yes
 is_subclass_of( STRING:derived_a, base) =                   yes
 is_subclass_of( STRING:derived_a, base,false) =             no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, base,true) =                           no
 is_a( STRING:undefB, base) =                                no
 is_subclass_of( STRING:undefB, base,false) =                no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, base) =                      no
 
 >>> With Defined class
@@ -277,11 +274,11 @@ is_subclass_of( OBJECT:derived_a, derived_a) =              no
 is_subclass_of( STRING:derived_a, derived_a) =              no
 is_subclass_of( STRING:derived_a, derived_a,false) =        no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, derived_a,true) =                      no
 is_a( STRING:undefB, derived_a) =                           no
 is_subclass_of( STRING:undefB, derived_a,false) =           no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, derived_a) =                 no
 
 >>> With Defined class
@@ -292,11 +289,11 @@ is_subclass_of( OBJECT:derived_a, if_a) =                   yes
 is_subclass_of( STRING:derived_a, if_a) =                   yes
 is_subclass_of( STRING:derived_a, if_a,false) =             no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, if_a,true) =                           no
 is_a( STRING:undefB, if_a) =                                no
 is_subclass_of( STRING:undefB, if_a,false) =                no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, if_a) =                      no
 
 >>> With Defined class
@@ -307,11 +304,11 @@ is_subclass_of( OBJECT:derived_a, undefA) =                 no
 is_subclass_of( STRING:derived_a, undefA) =                 no
 is_subclass_of( STRING:derived_a, undefA,false) =           no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, undefA,true) =                         no
 is_a( STRING:undefB, undefA) =                              no
 is_subclass_of( STRING:undefB, undefA,false) =              no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, undefA) =                    no
 
 
@@ -323,11 +320,11 @@ is_subclass_of( OBJECT:derived_b, base) =                   yes
 is_subclass_of( STRING:derived_b, base) =                   yes
 is_subclass_of( STRING:derived_b, base,false) =             no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, base,true) =                           no
 is_a( STRING:undefB, base) =                                no
 is_subclass_of( STRING:undefB, base,false) =                no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, base) =                      no
 
 >>> With Defined class
@@ -338,11 +335,11 @@ is_subclass_of( OBJECT:derived_b, derived_a) =              no
 is_subclass_of( STRING:derived_b, derived_a) =              no
 is_subclass_of( STRING:derived_b, derived_a,false) =        no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, derived_a,true) =                      no
 is_a( STRING:undefB, derived_a) =                           no
 is_subclass_of( STRING:undefB, derived_a,false) =           no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, derived_a) =                 no
 
 >>> With Defined class
@@ -353,11 +350,11 @@ is_subclass_of( OBJECT:derived_b, if_a) =                   yes
 is_subclass_of( STRING:derived_b, if_a) =                   yes
 is_subclass_of( STRING:derived_b, if_a,false) =             no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, if_a,true) =                           no
 is_a( STRING:undefB, if_a) =                                no
 is_subclass_of( STRING:undefB, if_a,false) =                no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, if_a) =                      no
 
 >>> With Defined class
@@ -368,9 +365,9 @@ is_subclass_of( OBJECT:derived_b, undefA) =                 no
 is_subclass_of( STRING:derived_b, undefA) =                 no
 is_subclass_of( STRING:derived_b, undefA,false) =           no
 >>> With Undefined
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_a( STRING:undefB, undefA,true) =                         no
 is_a( STRING:undefB, undefA) =                              no
 is_subclass_of( STRING:undefB, undefA,false) =              no
->>>> In __autoload: string(6) "undefB"
+>>>> In autoload: string(6) "undefB"
 is_subclass_of( STRING:undefB, undefA) =                    no
diff --git a/ext/standard/tests/class_object/is_subclass_of_variation_001.phpt b/ext/standard/tests/class_object/is_subclass_of_variation_001.phpt
index 201d878..b1cb553 100644
--- a/ext/standard/tests/class_object/is_subclass_of_variation_001.phpt
+++ b/ext/standard/tests/class_object/is_subclass_of_variation_001.phpt
@@ -8,9 +8,9 @@ Test is_subclass_of() function : usage variations  - unexpected type for arg 1
  * Alias to functions: 
  */
 // Note: basic use cases in Zend/tests/is_a.phpt
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -161,11 +161,11 @@ Arg value
 bool(false)
 
 Arg value string 
-In __autoload(string)
+In autoload(string)
 bool(false)
 
 Arg value String 
-In __autoload(String)
+In autoload(String)
 bool(false)
 
 Arg value  
@@ -173,4 +173,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/is_subclass_of_variation_002.phpt b/ext/standard/tests/class_object/is_subclass_of_variation_002.phpt
index 9bb712b..85f6976 100644
--- a/ext/standard/tests/class_object/is_subclass_of_variation_002.phpt
+++ b/ext/standard/tests/class_object/is_subclass_of_variation_002.phpt
@@ -8,9 +8,9 @@ Test is_subclass_of() function : usage variations  - unexpected type for arg 2
  * Alias to functions: 
  */
 
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -173,4 +173,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/is_subclass_of_variation_004.phpt b/ext/standard/tests/class_object/is_subclass_of_variation_004.phpt
index 65ae8a4..adecd50 100644
--- a/ext/standard/tests/class_object/is_subclass_of_variation_004.phpt
+++ b/ext/standard/tests/class_object/is_subclass_of_variation_004.phpt
@@ -8,9 +8,9 @@ Test is_subclass_of() function : usage variations  - unexpected type for arg 1 w
  * Alias to functions: 
  */
 // Note: basic use cases in Zend/tests/is_a.phpt
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -161,11 +161,11 @@ Arg value
 bool(false)
 
 Arg value string 
-In __autoload(string)
+In autoload(string)
 bool(false)
 
 Arg value String 
-In __autoload(String)
+In autoload(String)
 bool(false)
 
 Arg value  
@@ -173,4 +173,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/method_exists_basic_003.phpt b/ext/standard/tests/class_object/method_exists_basic_003.phpt
index 32f62b7..3ac1795 100644
--- a/ext/standard/tests/class_object/method_exists_basic_003.phpt
+++ b/ext/standard/tests/class_object/method_exists_basic_003.phpt
@@ -8,15 +8,15 @@ method_exists() on non-existent class, with __autoload().
  * Alias to functions: 
  */
 
-function __autoload($name) {
-	echo "In __autoload($name)\n"; 
-} 
+spl_autoload_register(function ($name) {
+	echo "In autoload($name)\n"; 
+});
 
 var_dump(method_exists('UndefC', 'func'));
 
 echo "Done";
 ?>
 --EXPECTF--
-In __autoload(UndefC)
+In autoload(UndefC)
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/method_exists_variation_001.phpt b/ext/standard/tests/class_object/method_exists_variation_001.phpt
index 1947c76..b41a1a1 100644
--- a/ext/standard/tests/class_object/method_exists_variation_001.phpt
+++ b/ext/standard/tests/class_object/method_exists_variation_001.phpt
@@ -8,9 +8,9 @@ Test method_exists() function : usage variations  - unexpected type for arg 1
  * Alias to functions: 
  */
 
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -160,11 +160,11 @@ Arg value
 bool(false)
 
 Arg value string 
-In __autoload(string)
+In autoload(string)
 bool(false)
 
 Arg value String 
-In __autoload(String)
+In autoload(String)
 bool(false)
 
 Arg value  
@@ -172,4 +172,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/method_exists_variation_002.phpt b/ext/standard/tests/class_object/method_exists_variation_002.phpt
index b1204e8..5c924bd 100644
--- a/ext/standard/tests/class_object/method_exists_variation_002.phpt
+++ b/ext/standard/tests/class_object/method_exists_variation_002.phpt
@@ -8,9 +8,9 @@ Test method_exists() function : usage variations  - unexpected type for arg 2
  * Alias to functions: 
  */
 
-function __autoload($className) {
-	echo "In __autoload($className)\n";
-}
+spl_autoload_register(function ($className) {
+	echo "In autoload($className)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -173,4 +173,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/property_exists_variation1.phpt b/ext/standard/tests/class_object/property_exists_variation1.phpt
index 1505a4b..1830440 100644
--- a/ext/standard/tests/class_object/property_exists_variation1.phpt
+++ b/ext/standard/tests/class_object/property_exists_variation1.phpt
@@ -10,9 +10,9 @@ Test property_exists() function : class auto loading
 
 echo "*** Testing property_exists() : class auto loading ***\n";
 
-function __autoload($class_name) {
+spl_autoload_register(function ($class_name) {
     require_once $class_name . '.inc';
-}
+});
 
 echo "\ntesting property in autoloaded class\n";
 var_dump(property_exists("AutoTest", "bob"));
@@ -30,4 +30,4 @@ bool(true)
 
 testing __get magic method
 bool(false)
-===DONE===
\ No newline at end of file
+===DONE===
diff --git a/ext/standard/tests/class_object/trait_exists_basic_001.phpt b/ext/standard/tests/class_object/trait_exists_basic_001.phpt
index 19616ab..6e1d452 100644
--- a/ext/standard/tests/class_object/trait_exists_basic_001.phpt
+++ b/ext/standard/tests/class_object/trait_exists_basic_001.phpt
@@ -10,9 +10,9 @@ Test trait_exists() function : basic functionality
 
 echo "*** Testing trait_exists() : basic functionality ***\n";
 
-function __autoload($traitName) {
-	echo "In __autoload($traitName)\n";
-}
+spl_autoload_register(function ($traitName) {
+	echo "In autoload($traitName)\n";
+});
 
 trait MyTrait {}
 
@@ -36,7 +36,7 @@ echo "Done";
 --EXPECTF--
 *** Testing trait_exists() : basic functionality ***
 Calling trait_exists() on non-existent trait with autoload explicitly enabled:
-In __autoload(C)
+In autoload(C)
 bool(false)
 
 Calling trait_exists() on existing trait with autoload explicitly enabled:
@@ -49,9 +49,9 @@ Calling trait_exists() on existing trait with autoload explicitly disabled:
 bool(true)
 
 Calling trait_exists() on non-existent trait with autoload unspecified:
-In __autoload(E)
+In autoload(E)
 bool(false)
 
 Calling trait_exists() on existing trait with autoload unspecified:
 bool(true)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/trait_exists_variation_001.phpt b/ext/standard/tests/class_object/trait_exists_variation_001.phpt
index 81df711..4fd2b8d 100644
--- a/ext/standard/tests/class_object/trait_exists_variation_001.phpt
+++ b/ext/standard/tests/class_object/trait_exists_variation_001.phpt
@@ -8,9 +8,9 @@ Test trait_exists() function : usage variations - unexpected types for argument
  * Alias to functions: 
  */
 
-function __autoload($traitName) {
-	echo "In __autoload($traitName)\n";
-}
+spl_autoload_register(function ($traitName) {
+	echo "In autoload($traitName)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -88,15 +88,15 @@ Error: 8 - Undefined variable: undefined_var, %s(67)
 Error: 8 - Undefined variable: unset_var, %s(70)
 
 Arg value 0 
-In __autoload(0)
+In autoload(0)
 bool(false)
 
 Arg value 1 
-In __autoload(1)
+In autoload(1)
 bool(false)
 
 Arg value 12345 
-In __autoload(12345)
+In autoload(12345)
 bool(false)
 
 Arg value -2345 
@@ -109,7 +109,7 @@ Arg value -10.5
 bool(false)
 
 Arg value 101234567000 
-In __autoload(101234567000)
+In autoload(101234567000)
 bool(false)
 
 Arg value 1.07654321E-9 
@@ -150,14 +150,14 @@ Arg value
 bool(false)
 
 Arg value 1 
-In __autoload(1)
+In autoload(1)
 bool(false)
 
 Arg value  
 bool(false)
 
 Arg value 1 
-In __autoload(1)
+In autoload(1)
 bool(false)
 
 Arg value  
@@ -179,4 +179,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/class_object/trait_exists_variation_002.phpt b/ext/standard/tests/class_object/trait_exists_variation_002.phpt
index 365efff..50f2a02 100644
--- a/ext/standard/tests/class_object/trait_exists_variation_002.phpt
+++ b/ext/standard/tests/class_object/trait_exists_variation_002.phpt
@@ -8,9 +8,9 @@ Test trait_exists() function : usage variations  - unexpected types for argument
  * Alias to functions: 
  */
 
-function __autoload($traitName) {
-	echo "In __autoload($traitName)\n";
-}
+spl_autoload_register(function ($traitName) {
+	echo "In autoload($traitName)\n";
+});
 
 function test_error_handler($err_no, $err_msg, $filename, $linenum, $vars) {
 	echo "Error: $err_no - $err_msg, $filename($linenum)\n";
@@ -95,35 +95,35 @@ Arg value 0
 bool(false)
 
 Arg value 1 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 12345 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value -2345 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 10.5 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value -10.5 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 101234567000 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 1.07654321E-9 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value 0.5 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 Error: 8 - Array to string conversion, %strait_exists_variation_002.php(%d)
 
@@ -158,14 +158,14 @@ Arg value
 bool(false)
 
 Arg value 1 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value  
 bool(false)
 
 Arg value 1 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value  
@@ -178,11 +178,11 @@ Arg value
 bool(false)
 
 Arg value string 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 
 Arg value string 
-In __autoload(string_val)
+In autoload(string_val)
 bool(false)
 Error: 4096 - Object of class stdClass could not be converted to string, %s(80)
 
@@ -195,4 +195,4 @@ bool(false)
 
 Arg value  
 bool(false)
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/general_functions/bug35229.phpt b/ext/standard/tests/general_functions/bug35229.phpt
index c3c273d..8e8895d 100644
--- a/ext/standard/tests/general_functions/bug35229.phpt
+++ b/ext/standard/tests/general_functions/bug35229.phpt
@@ -8,8 +8,7 @@ class test2 {
   }
 }
 
-function __autoload($class)
-{
+spl_autoload_register(function ($class) {
 	eval('class test1 extends test2 {}');
 
 	test1::use_stack(
@@ -17,7 +16,7 @@ function __autoload($class)
     11,12,13,14,15,16,17,18,19,20,
     21,22,23,24,25,26,27,28,29,30
   );
-}
+});
 
 call_user_func(array('test1', 'use_stack'),
   1,2,3,4,5,6,7,8,9,10,
diff --git a/ext/standard/tests/serialize/005.phpt b/ext/standard/tests/serialize/005.phpt
index 2df2701..1702a44 100644
--- a/ext/standard/tests/serialize/005.phpt
+++ b/ext/standard/tests/serialize/005.phpt
@@ -31,12 +31,11 @@ function unserializer($class_name)
 		eval("class TestNANew2 extends TestNew {}");
 		break;
 	default:
-		echo "Try __autoload()\n";
-		if (!function_exists('__autoload'))
-		{
-			eval('function __autoload($class_name) { do_autoload($class_name); }');
+		echo "Try autoloader\n";
+		if (!spl_autoload_functions()) {
+			spl_autoload_register(function ($class_name) { do_autoload($class_name); });
 		}
-		__autoload($class_name);
+		spl_autoload_call($class_name);
 		break;
 	}
 }
@@ -123,7 +122,7 @@ var_dump(unserialize('C:10:"TestNANew2":0:{}'));
 echo "===AutoOld===\n";
 var_dump(unserialize('O:19:"autoload_implements":0:{}'));
 
-// Now we have __autoload(), that will be called before the old style header.
+// Now we have an autoloader, that will be called before the old style header.
 // If the old style handler also fails to register the class then the object
 // becomes an incomplete class instance.
 
@@ -168,7 +167,7 @@ object(TestNANew2)#%d (0) {
 }
 ===AutoOld===
 unserializer(autoload_implements)
-Try __autoload()
+Try autoloader
 do_autoload(autoload_interface)
 do_autoload(autoload_implements)
 object(autoload_implements)#%d (0) {
@@ -176,7 +175,7 @@ object(autoload_implements)#%d (0) {
 ===AutoNA===
 do_autoload(autoload_not_available)
 unserializer(autoload_not_available)
-Try __autoload()
+Try autoloader
 do_autoload(autoload_not_available)
 do_autoload(autoload_not_available)
 
diff --git a/ext/standard/tests/serialize/bug30234.phpt b/ext/standard/tests/serialize/bug30234.phpt
index 9b40cc5..ae3a0b2 100644
--- a/ext/standard/tests/serialize/bug30234.phpt
+++ b/ext/standard/tests/serialize/bug30234.phpt
@@ -7,11 +7,10 @@ Bug #30234 (__autoload() not invoked for interfaces)
 --FILE--
 <?php
 
-function __autoload($class_name)
-{
+spl_autoload_register(function ($class_name) {
 	require_once(dirname(__FILE__) . '/' . strtolower($class_name) . '.p5c');
 	echo __FUNCTION__ . '(' . $class_name . ")\n";
-}
+});
 
 var_dump(interface_exists('autoload_interface', false));
 var_dump(class_exists('autoload_implements', false));
@@ -30,8 +29,8 @@ var_dump(class_exists('autoload_implements', false));
 --EXPECTF--
 bool(false)
 bool(false)
-__autoload(autoload_interface)
-__autoload(Autoload_Implements)
+{closure}(autoload_interface)
+{closure}(Autoload_Implements)
 object(autoload_implements)#%d (0) {
 }
 bool(true)
diff --git a/ext/standard/tests/serialize/bug62836_1.phpt b/ext/standard/tests/serialize/bug62836_1.phpt
index 7291046..7d03e9f 100644
--- a/ext/standard/tests/serialize/bug62836_1.phpt
+++ b/ext/standard/tests/serialize/bug62836_1.phpt
@@ -3,10 +3,10 @@ Bug #62836 (Seg fault or broken object references on unserialize())
 --FILE--
 <?php
 $serialized_object='O:1:"A":4:{s:1:"b";O:1:"B":0:{}s:2:"b1";r:2;s:1:"c";O:1:"B":0:{}s:2:"c1";r:4;}';
-function __autoload($name) {
+spl_autoload_register(function ($name) {
     unserialize("i:4;");
     eval("class $name {} ");
-}
+});
 
 print_r(unserialize($serialized_object));
 echo "okey";
diff --git a/ext/standard/tests/serialize/bug69152.phpt b/ext/standard/tests/serialize/bug69152.phpt
index b766c0a..c4dbcd6 100644
--- a/ext/standard/tests/serialize/bug69152.phpt
+++ b/ext/standard/tests/serialize/bug69152.phpt
@@ -13,4 +13,4 @@ Exception in %s:%d
 Stack trace:
 #0 {main}
 
-Fatal error: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line %d
+Fatal error: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
diff --git a/ext/standard/tests/serialize/bug70213.phpt b/ext/standard/tests/serialize/bug70213.phpt
index c01d362..fd7d400 100644
--- a/ext/standard/tests/serialize/bug70213.phpt
+++ b/ext/standard/tests/serialize/bug70213.phpt
@@ -6,9 +6,9 @@ Bug #70213: Unserialize context shared on double class lookup
 ini_set('unserialize_callback_func', 'evil');
 
 function evil() {
-	function __autoload($arg) {
+	spl_autoload_register(function ($arg) {
         var_dump(unserialize('R:1;'));
-    }
+    });
 }
 
 var_dump(unserialize('a:2:{i:0;i:42;i:1;O:4:"evil":0:{}}'));
@@ -23,7 +23,7 @@ array(2) {
   [0]=>
   int(42)
   [1]=>
-  object(__PHP_Incomplete_Class)#1 (1) {
+  object(__PHP_Incomplete_Class)#2 (1) {
     ["__PHP_Incomplete_Class_Name"]=>
     string(4) "evil"
   }
diff --git a/ext/standard/tests/serialize/incomplete_class.phpt b/ext/standard/tests/serialize/incomplete_class.phpt
index 8280485..7e6aa7b 100644
--- a/ext/standard/tests/serialize/incomplete_class.phpt
+++ b/ext/standard/tests/serialize/incomplete_class.phpt
@@ -17,11 +17,11 @@ echo "Done\n";
 object(__PHP_Incomplete_Class)#%d (0) {
 }
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line %d
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line %d
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 NULL
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line %d
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 NULL
 Done
diff --git a/ext/standard/tests/serialize/serialization_objects_005.phpt b/ext/standard/tests/serialize/serialization_objects_005.phpt
index 9800168..fd58b03 100644
--- a/ext/standard/tests/serialize/serialization_objects_005.phpt
+++ b/ext/standard/tests/serialize/serialization_objects_005.phpt
@@ -90,31 +90,31 @@ object(__PHP_Incomplete_Class)#%d (2) {
 }
 bool(true)
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 43
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 NULL
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 46
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 47
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 NULL
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 49
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 NULL
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 50
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 string(9) "p.changed"
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 53
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 bool(false)
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 54
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 55
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 bool(false)
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 56
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 57
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 NULL
 
-Fatal error: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 59
+Fatal error: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "C" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
diff --git a/ext/standard/tests/serialize/serialization_objects_006.phpt b/ext/standard/tests/serialize/serialization_objects_006.phpt
index e223f4e..918e59d 100644
--- a/ext/standard/tests/serialize/serialization_objects_006.phpt
+++ b/ext/standard/tests/serialize/serialization_objects_006.phpt
@@ -23,6 +23,6 @@ echo "Done";
 object(__PHP_Incomplete_Class)#%d (0) {
 }
 
-Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition  in %s on line 15
+Notice: main(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "unknown" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide an autoloader to load the class definition in %s on line %d
 NULL
-Done
\ No newline at end of file
+Done
diff --git a/ext/standard/tests/serialize/serialization_objects_007.phpt b/ext/standard/tests/serialize/serialization_objects_007.phpt
index 9cba9d1..2837e1e 100644
--- a/ext/standard/tests/serialize/serialization_objects_007.phpt
+++ b/ext/standard/tests/serialize/serialization_objects_007.phpt
@@ -13,9 +13,9 @@ Ensure __autoload is called twice if unserialize_callback_func is defined.
  * Alias to functions: 
  */
 
-function __autoload($name) {
-	echo "in __autoload($name)\n";
-}
+spl_autoload_register(function ($name) {
+	echo "in autoload($name)\n";
+});
 
 ini_set('unserialize_callback_func','check');
 
@@ -30,13 +30,13 @@ var_dump($o);
 echo "Done";
 ?>
 --EXPECTF--
-in __autoload(FOO)
+in autoload(FOO)
 in check(FOO)
-in __autoload(FOO)
+in autoload(FOO)
 
 Warning: unserialize(): Function check() hasn't defined the class it was called for in %s on line 23
 object(__PHP_Incomplete_Class)#%d (1) {
   ["__PHP_Incomplete_Class_Name"]=>
   string(3) "FOO"
 }
-Done
\ No newline at end of file
+Done
diff --git a/ext/xsl/tests/bug33853.phpt b/ext/xsl/tests/bug33853.phpt
index bcf30f6..16d7f73 100644
--- a/ext/xsl/tests/bug33853.phpt
+++ b/ext/xsl/tests/bug33853.phpt
@@ -5,10 +5,10 @@ Bug #33853 (php:function call __autoload with lowercase param)
 --FILE--
 <?php
 
-function __autoload($className) {
+spl_autoload_register(function ($className) {
         var_dump($className);
         exit();
-}
+});
 
 $xsl = new DomDocument();
 $xsl->loadXML('<?xml version="1.0" encoding="iso-8859-1" ?>
diff --git a/tests/classes/autoload_001.phpt b/tests/classes/autoload_001.phpt
index 6b520b7..6c09c4e 100644
--- a/tests/classes/autoload_001.phpt
+++ b/tests/classes/autoload_001.phpt
@@ -7,17 +7,16 @@ ZE2 Autoload and class_exists
 --FILE--
 <?php
 
-function __autoload($class_name)
-{
+spl_autoload_register(function ($class_name) {
 	require_once(dirname(__FILE__) . '/' . $class_name . '.p5c');
-	echo __FUNCTION__ . '(' . $class_name . ")\n";
-}
+	echo 'autoload(' . $class_name . ")\n";
+});
 
 var_dump(class_exists('autoload_root'));
 
 ?>
 ===DONE===
 --EXPECT--
-__autoload(autoload_root)
+autoload(autoload_root)
 bool(true)
 ===DONE===
diff --git a/tests/classes/autoload_002.phpt b/tests/classes/autoload_002.phpt
index 582cb46..ecb1a44 100644
--- a/tests/classes/autoload_002.phpt
+++ b/tests/classes/autoload_002.phpt
@@ -7,18 +7,17 @@ ZE2 Autoload and get_class_methods
 --FILE--
 <?php
 
-function __autoload($class_name)
-{
+spl_autoload_register(function ($class_name) {
 	require_once(dirname(__FILE__) . '/' . $class_name . '.p5c');
-	echo __FUNCTION__ . '(' . $class_name . ")\n";
-}
+	echo 'autoload(' . $class_name . ")\n";
+});
 
 var_dump(get_class_methods('autoload_root'));
 
 ?>
 ===DONE===
 --EXPECT--
-__autoload(autoload_root)
+autoload(autoload_root)
 array(1) {
   [0]=>
   string(12) "testFunction"
diff --git a/tests/classes/autoload_003.phpt b/tests/classes/autoload_003.phpt
index 41e877c..f79b85a 100644
--- a/tests/classes/autoload_003.phpt
+++ b/tests/classes/autoload_003.phpt
@@ -7,18 +7,17 @@ ZE2 Autoload and derived classes
 --FILE--
 <?php
 
-function __autoload($class_name)
-{
+spl_autoload_register(function ($class_name) {
 	require_once(dirname(__FILE__) . '/' . $class_name . '.p5c');
-	echo __FUNCTION__ . '(' . $class_name . ")\n";
-}
+	echo 'autoload(' . $class_name . ")\n";
+});
 
 var_dump(class_exists('autoload_derived'));
 
 ?>
 ===DONE===
 --EXPECT--
-__autoload(autoload_root)
-__autoload(autoload_derived)
+autoload(autoload_root)
+autoload(autoload_derived)
 bool(true)
 ===DONE===
diff --git a/tests/classes/autoload_004.phpt b/tests/classes/autoload_004.phpt
index 88b10b5..1f754ca 100644
--- a/tests/classes/autoload_004.phpt
+++ b/tests/classes/autoload_004.phpt
@@ -7,12 +7,11 @@ ZE2 Autoload and recursion
 --FILE--
 <?php
 
-function __autoload($class_name)
-{
+spl_autoload_register(function ($class_name) {
 	var_dump(class_exists($class_name));
 	require_once(dirname(__FILE__) . '/' . $class_name . '.p5c');
-	echo __FUNCTION__ . '(' . $class_name . ")\n";
-}
+	echo 'autoload(' . $class_name . ")\n";
+});
 
 var_dump(class_exists('autoload_derived'));
 
@@ -21,7 +20,7 @@ var_dump(class_exists('autoload_derived'));
 --EXPECT--
 bool(false)
 bool(false)
-__autoload(autoload_root)
-__autoload(autoload_derived)
+autoload(autoload_root)
+autoload(autoload_derived)
 bool(true)
 ===DONE===
diff --git a/tests/classes/autoload_005.phpt b/tests/classes/autoload_005.phpt
index c574139..26f4d6a 100644
--- a/tests/classes/autoload_005.phpt
+++ b/tests/classes/autoload_005.phpt
@@ -7,12 +7,11 @@ ZE2 Autoload from destructor
 --FILE--
 <?php
 
-function __autoload($class_name)
-{
+spl_autoload_register(function ($class_name) {
 	var_dump(class_exists($class_name, false));
 	require_once(dirname(__FILE__) . '/' . $class_name . '.p5c');
-	echo __FUNCTION__ . '(' . $class_name . ")\n";
-}
+	echo 'autoload(' . $class_name . ")\n";
+});
 
 var_dump(class_exists('autoload_derived', false));
 var_dump(class_exists('autoload_derived', false));
@@ -37,8 +36,8 @@ bool(false)
 Test::__destruct
 bool(false)
 bool(false)
-__autoload(autoload_root)
-__autoload(autoload_derived)
+autoload(autoload_root)
+autoload(autoload_derived)
 object(autoload_derived)#%d (0) {
 }
 ===DONE===
diff --git a/tests/classes/autoload_006.phpt b/tests/classes/autoload_006.phpt
index 173b87d..092e2e2 100644
--- a/tests/classes/autoload_006.phpt
+++ b/tests/classes/autoload_006.phpt
@@ -7,11 +7,10 @@ ZE2 Autoload from destructor
 --FILE--
 <?php
 
-function __autoload($class_name)
-{
+spl_autoload_register(function ($class_name) {
 	require_once(dirname(__FILE__) . '/' . strtolower($class_name) . '.p5c');
-	echo __FUNCTION__ . '(' . $class_name . ")\n";
-}
+	echo 'autoload(' . $class_name . ")\n";
+});
 
 var_dump(interface_exists('autoload_interface', false));
 var_dump(class_exists('autoload_implements', false));
@@ -29,8 +28,8 @@ var_dump(class_exists('autoload_implements', false));
 --EXPECTF--
 bool(false)
 bool(false)
-__autoload(autoload_interface)
-__autoload(Autoload_Implements)
+autoload(autoload_interface)
+autoload(Autoload_Implements)
 object(autoload_implements)#%d (0) {
 }
 bool(true)
diff --git a/tests/classes/autoload_007.phpt b/tests/classes/autoload_007.phpt
index 5652c12..ba542a1 100644
--- a/tests/classes/autoload_007.phpt
+++ b/tests/classes/autoload_007.phpt
@@ -2,14 +2,13 @@
 Ensure instanceof does not trigger autoload.
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  
-  $a = new stdClass;
-  var_dump($a instanceof UndefC);
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+
+$a = new stdClass;
+var_dump($a instanceof UndefC);
 ?>
 --EXPECTF--
 bool(false)
diff --git a/tests/classes/autoload_008.phpt b/tests/classes/autoload_008.phpt
index 75a9cd0..1f3f075 100644
--- a/tests/classes/autoload_008.phpt
+++ b/tests/classes/autoload_008.phpt
@@ -2,25 +2,24 @@
 Ensure catch blocks for unknown exception types do not trigger autoload.
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  
-  function f()
-  {
-      throw new Exception();
-  }
-  try {
-      f();
-  }
-  catch (UndefC $u) {
-      echo "In UndefClass catch block.\n";
-  }
-  catch (Exception $e) {
-      echo "In Exception catch block. Autoload should not have been triggered.\n";
-  }
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+
+function f()
+{
+  throw new Exception();
+}
+try {
+  f();
+}
+catch (UndefC $u) {
+  echo "In UndefClass catch block.\n";
+}
+catch (Exception $e) {
+  echo "In Exception catch block. Autoload should not have been triggered.\n";
+}
 ?>
 --EXPECTF--
 In Exception catch block. Autoload should not have been triggered.
diff --git a/tests/classes/autoload_009.phpt b/tests/classes/autoload_009.phpt
index 150f3ec..ebe691c 100644
--- a/tests/classes/autoload_009.phpt
+++ b/tests/classes/autoload_009.phpt
@@ -2,16 +2,15 @@
 Ensure type hints for unknown types do not trigger autoload. 
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  
-  function f(UndefClass $x)
-  {
-  }
-  f(new stdClass);
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+
+function f(UndefClass $x)
+{
+}
+f(new stdClass);
 ?>
 --EXPECTF--
 Fatal error: Uncaught TypeError: Argument 1 passed to f() must be an instance of UndefClass, instance of stdClass given, called in %s on line %d and defined in %s:%d
diff --git a/tests/classes/autoload_010.phpt b/tests/classes/autoload_010.phpt
index 104f688..e65c256 100644
--- a/tests/classes/autoload_010.phpt
+++ b/tests/classes/autoload_010.phpt
@@ -2,15 +2,14 @@
 Ensure implements does trigger autoload.
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  
-  class C implements UndefI
-  {
-  }
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+
+class C implements UndefI
+{
+}
 ?>
 --EXPECTF--
 In autoload: string(6) "UndefI"
diff --git a/tests/classes/autoload_011.phpt b/tests/classes/autoload_011.phpt
index 86858d5..aaea38c 100644
--- a/tests/classes/autoload_011.phpt
+++ b/tests/classes/autoload_011.phpt
@@ -2,15 +2,14 @@
 Ensure extends does trigger autoload.
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  
-  class C extends UndefBase
-  {
-  }
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+
+class C extends UndefBase
+{
+}
 ?>
 --EXPECTF--
 In autoload: string(9) "UndefBase"
diff --git a/tests/classes/autoload_012.phpt b/tests/classes/autoload_012.phpt
index d6750b7..4fc41c8 100644
--- a/tests/classes/autoload_012.phpt
+++ b/tests/classes/autoload_012.phpt
@@ -2,12 +2,11 @@
 Ensure callback methods in unknown classes trigger autoload.
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  call_user_func("UndefC::test");
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+call_user_func("UndefC::test");
 ?>
 --EXPECTF--
 In autoload: string(6) "UndefC"
diff --git a/tests/classes/autoload_013.phpt b/tests/classes/autoload_013.phpt
index 4309cea..a63b129 100644
--- a/tests/classes/autoload_013.phpt
+++ b/tests/classes/autoload_013.phpt
@@ -4,18 +4,17 @@ Ensure the ReflectionClass constructor triggers autoload.
 <?php extension_loaded('reflection') or die('skip'); ?>
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  
-  try {
-      new ReflectionClass("UndefC");
-  }
-  catch (ReflectionException $e) {
-      echo $e->getMessage();
-  }
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+
+try {
+  new ReflectionClass("UndefC");
+}
+catch (ReflectionException $e) {
+  echo $e->getMessage();
+}
 ?>
 --EXPECTF--
 In autoload: string(6) "UndefC"
diff --git a/tests/classes/autoload_014.phpt b/tests/classes/autoload_014.phpt
index a3f04b7..3eb0484 100644
--- a/tests/classes/autoload_014.phpt
+++ b/tests/classes/autoload_014.phpt
@@ -4,18 +4,17 @@ Ensure the ReflectionMethod constructor triggers autoload.
 <?php extension_loaded('reflection') or die('skip'); ?>
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  
-  try {
-      new ReflectionMethod("UndefC::test");
-  }
-  catch (ReflectionException $e) {
-      echo $e->getMessage();
-  }
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+
+try {
+  new ReflectionMethod("UndefC::test");
+}
+catch (ReflectionException $e) {
+  echo $e->getMessage();
+}
 ?>
 --EXPECTF--
 In autoload: string(6) "UndefC"
diff --git a/tests/classes/autoload_015.phpt b/tests/classes/autoload_015.phpt
index 2b14a0d..edff01c 100644
--- a/tests/classes/autoload_015.phpt
+++ b/tests/classes/autoload_015.phpt
@@ -4,18 +4,17 @@ Ensure the ReflectionProperty constructor triggers autoload.
 <?php extension_loaded('reflection') or die('skip'); ?>
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
-  
-  try {
-      new ReflectionProperty('UndefC', 'p');
-  }
-  catch (ReflectionException $e) {
-      echo $e->getMessage();
-  }
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
+
+try {
+  new ReflectionProperty('UndefC', 'p');
+}
+catch (ReflectionException $e) {
+  echo $e->getMessage();
+}
 ?>
 --EXPECTF--
 In autoload: string(6) "UndefC"
diff --git a/tests/classes/autoload_016.phpt b/tests/classes/autoload_016.phpt
index 60263ba..d1ff885 100644
--- a/tests/classes/autoload_016.phpt
+++ b/tests/classes/autoload_016.phpt
@@ -4,19 +4,18 @@ Ensure ReflectionClass::getProperty() triggers autoload
 <?php extension_loaded('reflection') or die('skip'); ?>
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
 
-  $rc = new ReflectionClass("stdClass");
-  
-  try {
-    $rc->getProperty("UndefC::p");
-  } catch (ReflectionException $e) {
-      echo $e->getMessage();
-  }
+$rc = new ReflectionClass("stdClass");
+
+try {
+$rc->getProperty("UndefC::p");
+} catch (ReflectionException $e) {
+  echo $e->getMessage();
+}
 ?>
 --EXPECTF--
 In autoload: string(6) "undefc"
diff --git a/tests/classes/autoload_017.phpt b/tests/classes/autoload_017.phpt
index d5ce2bd..8e1aeac 100644
--- a/tests/classes/autoload_017.phpt
+++ b/tests/classes/autoload_017.phpt
@@ -4,19 +4,18 @@ Ensure ReflectionClass::implementsInterface triggers autoload.
 <?php extension_loaded('reflection') or die('skip'); ?>
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "In autoload: ";
-      var_dump($name);
-  }
+spl_autoload_register(function ($name) {
+  echo "In autoload: ";
+  var_dump($name);
+});
 
-  $rc = new ReflectionClass("stdClass");
-  
-  try {
-    $rc->implementsInterface("UndefI");
-  } catch (ReflectionException $e) {
-    echo $e->getMessage();
-  }
+$rc = new ReflectionClass("stdClass");
+
+try {
+  $rc->implementsInterface("UndefI");
+} catch (ReflectionException $e) {
+  echo $e->getMessage();
+}
 ?>
 --EXPECTF--
 In autoload: string(6) "UndefI"
diff --git a/tests/classes/autoload_018.phpt b/tests/classes/autoload_018.phpt
index 59e20e2..2099499 100644
--- a/tests/classes/autoload_018.phpt
+++ b/tests/classes/autoload_018.phpt
@@ -2,47 +2,46 @@
 Ensure __autoload() allows for recursive calls if the class name differs.
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "IN:  " . __METHOD__ . "($name)\n";
-      
-      static $i = 0;
-      if ($i++ > 10) {
-          echo "-> Recursion detected - as expected.\n";
-          return;
-      }
-      
-      class_exists('UndefinedClass' . $i);
-      
-      echo "OUT: " . __METHOD__ . "($name)\n";
+spl_autoload_register(function ($name) {
+  echo "IN:  autoload($name)\n";
+  
+  static $i = 0;
+  if ($i++ > 10) {
+      echo "-> Recursion detected - as expected.\n";
+      return;
   }
   
-  var_dump(class_exists('UndefinedClass0'));
+  class_exists('UndefinedClass' . $i);
+  
+  echo "OUT: autoload($name)\n";
+});
+
+var_dump(class_exists('UndefinedClass0'));
 ?>
 --EXPECTF--
-IN:  __autoload(UndefinedClass0)
-IN:  __autoload(UndefinedClass1)
-IN:  __autoload(UndefinedClass2)
-IN:  __autoload(UndefinedClass3)
-IN:  __autoload(UndefinedClass4)
-IN:  __autoload(UndefinedClass5)
-IN:  __autoload(UndefinedClass6)
-IN:  __autoload(UndefinedClass7)
-IN:  __autoload(UndefinedClass8)
-IN:  __autoload(UndefinedClass9)
-IN:  __autoload(UndefinedClass10)
-IN:  __autoload(UndefinedClass11)
+IN:  autoload(UndefinedClass0)
+IN:  autoload(UndefinedClass1)
+IN:  autoload(UndefinedClass2)
+IN:  autoload(UndefinedClass3)
+IN:  autoload(UndefinedClass4)
+IN:  autoload(UndefinedClass5)
+IN:  autoload(UndefinedClass6)
+IN:  autoload(UndefinedClass7)
+IN:  autoload(UndefinedClass8)
+IN:  autoload(UndefinedClass9)
+IN:  autoload(UndefinedClass10)
+IN:  autoload(UndefinedClass11)
 -> Recursion detected - as expected.
-OUT: __autoload(UndefinedClass10)
-OUT: __autoload(UndefinedClass9)
-OUT: __autoload(UndefinedClass8)
-OUT: __autoload(UndefinedClass7)
-OUT: __autoload(UndefinedClass6)
-OUT: __autoload(UndefinedClass5)
-OUT: __autoload(UndefinedClass4)
-OUT: __autoload(UndefinedClass3)
-OUT: __autoload(UndefinedClass2)
-OUT: __autoload(UndefinedClass1)
-OUT: __autoload(UndefinedClass0)
+OUT: autoload(UndefinedClass10)
+OUT: autoload(UndefinedClass9)
+OUT: autoload(UndefinedClass8)
+OUT: autoload(UndefinedClass7)
+OUT: autoload(UndefinedClass6)
+OUT: autoload(UndefinedClass5)
+OUT: autoload(UndefinedClass4)
+OUT: autoload(UndefinedClass3)
+OUT: autoload(UndefinedClass2)
+OUT: autoload(UndefinedClass1)
+OUT: autoload(UndefinedClass0)
 bool(false)
 
diff --git a/tests/classes/autoload_019.phpt b/tests/classes/autoload_019.phpt
index 7836320..b9bcd6e 100644
--- a/tests/classes/autoload_019.phpt
+++ b/tests/classes/autoload_019.phpt
@@ -2,13 +2,12 @@
 Ensure __autoload() recursion is guarded for multiple lookups of same class using difference case.
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo __FUNCTION__ . " $name\n";
-      class_exists("undefinedCLASS");
-  }
-  
-  class_exists("unDefinedClass");
+spl_autoload_register(function ($name) {
+  echo "autoload $name\n";
+  class_exists("undefinedCLASS");
+});
+
+class_exists("unDefinedClass");
 ?>
 --EXPECTF--
-__autoload unDefinedClass
+autoload unDefinedClass
diff --git a/tests/classes/autoload_020.phpt b/tests/classes/autoload_020.phpt
index a88e561..7cecff0 100644
--- a/tests/classes/autoload_020.phpt
+++ b/tests/classes/autoload_020.phpt
@@ -2,12 +2,11 @@
 Ensure __autoload() is triggered during unserialization.
 --FILE--
 <?php
-  function __autoload($name)
-  {
-      echo "in autoload: $name\n";
-  }
-  
-  var_dump(unserialize('O:1:"C":0:{}'));
+spl_autoload_register(function ($name) {
+  echo "in autoload: $name\n";
+});
+
+var_dump(unserialize('O:1:"C":0:{}'));
 ?>
 --EXPECTF--
 in autoload: C
diff --git a/tests/classes/autoload_021.phpt b/tests/classes/autoload_021.phpt
index 3237627..f3dd8ff 100644
--- a/tests/classes/autoload_021.phpt
+++ b/tests/classes/autoload_021.phpt
@@ -2,9 +2,9 @@
 Validation of class names in the autoload process
 --FILE--
 <?php
-function __autoload($name) {
+spl_autoload_register(function ($name) {
 	echo "$name\n";
-}
+});
 $a = "../BUG";
 $x = new $a;
 echo "BUG\n";