From:             l dot werner at sprengnetter dot de
Operating system: Linux
PHP version:      5.5.3
Package:          *General Issues
Bug Type:         Bug
Bug description:0 equals any string

Description:
------------
When matching any string against 0 with == or != PHP will say they match.
This is in my eyes absolutely wrong because testing against other types
will not result in this behavior.

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

echo "null != 'string' -> ";
var_dump(null != 'string');
echo "<br />";

echo "false != 'string' -> ";
var_dump(false != 'string');
echo "<br />";

echo "0 != 'string' -> ";
var_dump(0 != 'string');
echo "<br />";

echo "1 != 'string' -> ";
var_dump(1 != 'string');



Expected result:
----------------
null != 'string' -> bool(true)
false != 'string' -> bool(true)
0 != 'string' -> bool(true)
1 != 'string' -> bool(true) 

Actual result:
--------------
null != 'string' -> bool(true)
false != 'string' -> bool(true)
0 != 'string' -> bool(false)
1 != 'string' -> bool(true) 

-- 
Edit bug report at https://bugs.php.net/bug.php?id=65570&edit=1
-- 
Try a snapshot (PHP 5.4):   
https://bugs.php.net/fix.php?id=65570&r=trysnapshot54
Try a snapshot (PHP 5.3):   
https://bugs.php.net/fix.php?id=65570&r=trysnapshot53
Try a snapshot (trunk):     
https://bugs.php.net/fix.php?id=65570&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=65570&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=65570&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=65570&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=65570&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=65570&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=65570&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=65570&r=notwrong
Not enough info:            
https://bugs.php.net/fix.php?id=65570&r=notenoughinfo
Submitted twice:            
https://bugs.php.net/fix.php?id=65570&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=65570&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=65570&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=65570&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=65570&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=65570&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=65570&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=65570&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=65570&r=mysqlcfg

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