Bug #51998 [NEW]: call_user_func_array can't use private methods on the $this pointer

From: Date: Sat, 05 Jun 2010 07:05:28 +0000
Subject: Bug #51998 [NEW]: call_user_func_array can't use private methods on the $this pointer
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-151101@lists.php.net to get a copy of this message 
From:             
Operating system: All
PHP version:      5.2.13
Package:          *General Issues
Bug Type:         Bug
Bug description:call_user_func_array can't use private methods on the $this pointer

Description:
------------
I'd like to make a helper library that can use call_user_func outside of
the 
object context, but still use private methods (obviously only when called
from 
inside the object).

Example attached:

Test script:
---------------
<?php

class A { 
  private function test1() {
    print 'side effect 1';
    return false;
  }
  private function test2() {
    print 'side effect 2';
    return 'yay';
  }
  private function test3() {
    print 'side effect 3';
    return 'nope';
  }
  public function first() {
    return nonempty_lazy(
      array(array($this, 'test1')),
      array(array($this, 'test2')),
      array(array($this, 'test3')));
  }
}

function nonempty_lazy() {
  $args = func_get_args();
  foreach ($args as $arg) {
    $cb = array_shift($arg);
    $val = call_user_func_array($cb, $arg);
    if (!empty($val))
      return $val;
  }
}

$a = new A;
print $a->first();


Expected result:
----------------
side effect 1side effect 2yay

Actual result:
--------------
Warning: call_user_func_array() expects parameter 1 to be a valid callback,
cannot 
access private method A::test1() in /Users/ptarjan/tmp/cufa.php on line 28

Warning: call_user_func_array() expects parameter 1 to be a valid callback,
cannot 
access private method A::test2() in /Users/ptarjan/tmp/cufa.php on line 28

Warning: call_user_func_array() expects parameter 1 to be a valid callback,
cannot 
access private method A::test3() in /Users/ptarjan/tmp/cufa.php on line 28


-- 
Edit bug report at http://bugs.php.net/bug.php?id=51998&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=51998&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=51998&r=trysnapshot53
Try a snapshot (trunk):              http://bugs.php.net/fix.php?id=51998&r=trysnapshottrunk
Fixed in SVN:                        http://bugs.php.net/fix.php?id=51998&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=51998&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=51998&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=51998&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=51998&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=51998&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=51998&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=51998&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=51998&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=51998&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=51998&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=51998&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=51998&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=51998&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=51998&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=51998&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=51998&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=51998&r=mysqlcfg

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