#47765 [Opn]: __invoke lacks if object is a static property or return

 ID:               47765
 User updated by:  biohazard999 at gmx dot at
 Reported By:      biohazard999 at gmx dot at
 Status:           Open
-Bug Type:         Documentation problem
+Bug Type:         Scripting Engine problem
 Operating System: Windows XP SP3
-PHP Version:      Irrelevant
+PHP Version:      5.3.0RC1
 New Comment:

Think it's a script engine problem or a documentation problem


Previous Comments:
------------------------------------------------------------------------

[2009-03-24 19:10:07] biohazard999 at gmx dot at

Description:
------------
If the object to invoke is stored in a static property or is returned
by a static function __invoke will not be called.
Especially for singletons is this extremly missleading.

Either it is an documentation problem or something other is wrong.

Actual documentation:
The __invoke method is called when a script tries to call an object as
a function. 

Reproduce code:
---------------
class foo
{
  public static $instance = null; //only public for this example

  public static function get()
  {
    if(is_null(self::$instance))
      self::$instance = new self;

    return self::$instance;
  }

  public function __invoke($name)
  {
    echo 'Hello '.$name;
  }
}

//1)
foo::get()('World');

//2)
foo::get();
foo::$instance('World');

//3)
$bar = foo::get();
$bar('World');

Expected result:
----------------
1) //Here is the parsing-error partial expected
Hello World

2)
Hello World

3)
Hello World

Actual result:
--------------
1)
Parse error: parse error in test.php on line 23

2)
Notice: Undefined variable: instance in test.php on line 27
Fatal error: Function name must be a string in test.php on line 27

3)
Hello World //Behavior as expected


------------------------------------------------------------------------


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Edit this bug report at http://bugs.php.net/?id=47765&edit=1