#49143 [Fbk->Opn]: is_callable() and unnecessary backslash

From: Date: Tue, 04 Aug 2009 11:24:36 +0000
Subject: #49143 [Fbk->Opn]: is_callable() and unnecessary backslash
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-140637@lists.php.net to get a copy of this message 
 ID:               49143
 User updated by:  david at grudl dot com
 Reported By:      david at grudl dot com
-Status:           Feedback
+Status:           Open
 Bug Type:         Class/Object related
 Operating System: *
 PHP Version:      5.3.0
 New Comment:

The two same class invokes autoloader with different class name (maybe

better term is non-canonicalized class name).

This means: every autoloader must call $name = ltrim($name, "\").

defined() removes leading "\" automatically, is_callable and 
method_exists do not.


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

[2009-08-04 11:16:07] jani@php.net

Yes, which problem..? I don't see any errors. 

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

[2009-08-04 00:34:46] david at grudl dot com

Tested with 5.3.1-dev (Sun, 02 Aug 2009 18:53:57 +0000), problem still

exists.

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

[2009-08-03 23:12:04] jani@php.net

Please try using this snapshot:

  http://snaps.php.net/php5.3-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/



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

[2009-08-03 16:19:59] david at grudl dot com

Description:
------------
is_callable() and method_exists() may invoke autoloader with 
unnecessary namespace backslash.

\My\MyClass::func() is the same as My\MyClass::func().





Reproduce code:
---------------
function __autoload($name)
{
	echo $name;
}

is_callable('\My\MyClass::func'); // ERROR

is_callable('My\MyClass::func'); // OK

method_exists('\My\MyClass', 'func'); // ERROR

method_exists('My\MyClass', 'func'); // OK

// defined works well:
defined('\My\MyClass::CONST'); // OK

defined('My\MyClass::CONST'); // OK



Expected result:
----------------
My\MyClass
My\MyClass

My\MyClass
My\MyClass

My\MyClass
My\MyClass

Actual result:
--------------
\My\MyClass
My\MyClass

\My\MyClass
My\MyClass

My\MyClass
My\MyClass


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


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