Bug #65845 [Com]: Error when Zend Opcache Optimizer is fully enabled

[guy dot cesaro at gmail dot com]

Edit report at https://bugs.php.net/bug.php?id=65845&edit=1

 ID:                 65845
 Comment by:         guy dot cesaro at gmail dot com
 Reported by:        bruno+php at ahennezel dot info
 Summary:            Error when Zend Opcache Optimizer is fully enabled
 Status:             Feedback
 Type:               Bug
 Package:            opcache
 Operating System:   Linux 3.11.2-1-ARCH
 PHP Version:        5.5.4
 Block user comment: N
 Private report:     N

 New Comment:

Hello Laruence,

I've tried with php-cli (windows and ubuntu), the output is ok.

Antoher try with : Apache/2.4.6 (Ubuntu) + PHP Version 
5.5.4-1+debphp.org~raring+1 and the output is not ok.

Can you please try the script with http server ?


Previous Comments:
------------------------------------------------------------------------
[2013-10-08 11:05:44] larue...@php.net

Please try using this snapshot:

  http://snaps.php.net/php5.5-latest.tar.gz
 
For Windows:

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

please try with the latest snapshot of php5.5 in git

------------------------------------------------------------------------
[2013-10-08 11:02:28] larue...@php.net

hmm, I run this with opcache enable, and fully optimizer. 

seems the output is expected?

"
$ php55 -d opcache.enable=1 -d opcache.optimization_level=0xffffffff /tmp/1.php
This should echo empty string:
This should echo "tutu" string: tutu
"

------------------------------------------------------------------------
[2013-10-08 10:44:11] brunobergot at gmail dot com

Me again, here is a last test script that work without changing 
opcache.optimization_level :

<h1>APC BUG</h1>
<?php
// Expected :
// APC BUG
// This should echo empty string: ><
// This should echo "tutu" string: >tutu<


function table_valeur($table, $cle, $defaut='') {
    foreach (explode('/', $cle) as $k) {

        $table = is_string($table) ? @unserialize($table) : $table;

        if (is_object($table)) {
            $table =  (($k !== "") and isset($table->$k)) ? $table->$k : 
$defaut;
        } elseif (is_array($table)) {
            $table = isset($table[$k]) ? $table[$k] : $defaut;
        } else {
            $table = $defaut;
        }
    }
    return $table;
}

function vide($texte){
    return "";
}

echo "This should echo empty string: 
&gt;".vide($Pile['vars'][$zzz=(string)'toto'] = 'tutu')."&lt;<br />";
echo "This should echo \"tutu\" string: 
&gt;".table_valeur($Pile['vars'],'toto')."&lt;<br />";

?>

------------------------------------------------------------------------
[2013-10-08 10:30:33] brunobergot at gmail dot com

Hi again Laruence,

We found that the problem comes form the cast in $Pile['vars'][(string)'toto']. 
With this news test script it works as expected :

<h1>APC BUG</h1>
<?php
// Expected :
// APC BUG
// This should echo empty string: ><
// This should echo "tutu" string: >tutu<

// Works as expected with opcache.optimization_level=0xffffffef in php.ini


function table_valeur($table, $cle, $defaut='') {
var_dump($table);
var_dump($cle);
var_dump($table[$cle]);
    foreach (explode('/', $cle) as $k) {

        $table = is_string($table) ? @unserialize($table) : $table;

        if (is_object($table)) {
            $table =  (($k !== "") and isset($table->$k)) ? $table->$k : 
$defaut;
        } elseif (is_array($table)) {
            $table = isset($table[$k]) ? $table[$k] : $defaut;
        } else {
            $table = $defaut;
        }
    }
    return $table;
}

function vide($texte){
    return "";
}

echo "This should echo empty string: &gt;".vide($Pile['vars']['toto'] = 
'tutu')."&lt;<br />";
echo "This should echo \"tutu\" string: 
&gt;".table_valeur($Pile['vars'],'toto')."&lt;<br />";

?>

------------------------------------------------------------------------
[2013-10-08 10:17:30] brunobergot at gmail dot com

Hi Laurence,

Here is a script that show the bug in action :

<h1>APC BUG</h1>
<?php
// Expected :
// APC BUG
// This should echo empty string: ><
// This should echo "tutu" string: >tutu<

// Works as expected with opcache.optimization_level=0xffffffef in php.ini


function table_valeur($table, $cle, $defaut='') {
    foreach (explode('/', $cle) as $k) {

        $table = is_string($table) ? @unserialize($table) : $table;

        if (is_object($table)) {
            $table =  (($k !== "") and isset($table->$k)) ? $table->$k : 
$defaut;
        } elseif (is_array($table)) {
            $table = isset($table[$k]) ? $table[$k] : $defaut;
        } else {
            $table = $defaut;
        }
    }
    return $table;
}

function vide($texte){
    return "";
}

echo "This should echo empty string: &gt;".vide($Pile['vars'][(string)'toto'] = 
'tutu')."&lt;<br />";
echo "This should echo \"tutu\" string: 
&gt;".table_valeur($Pile['vars'],'toto')."&lt;<br />";

?>

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


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