[PHP-BUG] Bug #51395 [NEW]: implemeting an interface causes class not found

From:             
Operating system: OS X, FreeBSD
PHP version:      5.3.2
Package:          Scripting Engine problem
Bug Type:         Bug
Bug description:implemeting an interface causes class not found

Description:
------------
Normally you can declare classes in any order inside of a php file. When
one of your classes implements an interface, php will throw a fatal error
about class not found if the class is declared in the wrong order.

If you remove the implements clause then order does not matter.

php bug http://bugs.php.net/bug.php?id=39758 also shows this and the reply
from dmitry was:

PHP always declares classes those implement interfaces at run-time. So in
your example you cannot declare "Bar" because "Foo" is not declared yet.
Your report may be categorised as "feature request", but it cannot be fixed
in 5.2.* anyway, because of binary compatibility.


Just because the internals handle things in a certain order does not mean
that php should exhibit contradicting behavior based on valid class
definitions.

Test script:
---------------
test.php
<?php
class One extends Two {}
interface Three {}
class Two implements Three {}
?>

test2.php
<?php
class One extends Two {}
interface Three {}
class Two {}
?>

Expected result:
----------------
test.php:
no output

test2.php:
no output

Actual result:
--------------
jjohnston:~$ php test.php 
PHP Fatal error:  Class 'Two' not found in /Users/jjohnston/test.php on
line 2

Fatal error: Class 'Two' not found in /Users/jjohnston/test.php on line 2

jjohnston:~$ php test2.php

-- 
Edit bug report at http://bugs.php.net/bug.php?id=51395&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51395&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51395&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=51395&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51395&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51395&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51395&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51395&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51395&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51395&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51395&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51395&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51395&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51395&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51395&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51395&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51395&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51395&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51395&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51395&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51395&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51395&r=mysqlcfg