From:             steve at ezd dot com
Operating system: linux
PHP version:      5.2.10
PHP Bug Type:     *General Issues
Bug description:  zero problem in if and switch

Description:
------------
please run source code, it's self explained
it seems that when use 0 to compare with string, it returns true all the
time,
problem in if is when using ==, === has no problem
in switch case, it matches the first non number case

Reproduce code:
---------------
                if (0=="a")     echo "this is ture.";
                $check=0;
                switch ($check)
                {
                        case 'a':
                        echo "this is a ";
                        break;
                        default :
                        echo "no match";
                }

Expected result:
----------------
no match

Actual result:
--------------
this is ture.this is a 

-- 
Edit bug report at http://bugs.php.net/?id=49179&edit=1
-- 
Try a snapshot (PHP 5.2):            
http://bugs.php.net/fix.php?id=49179&r=trysnapshot52
Try a snapshot (PHP 5.3):            
http://bugs.php.net/fix.php?id=49179&r=trysnapshot53
Try a snapshot (PHP 6.0):            
http://bugs.php.net/fix.php?id=49179&r=trysnapshot60
Fixed in SVN:                        
http://bugs.php.net/fix.php?id=49179&r=fixed
Fixed in SVN and need be documented: 
http://bugs.php.net/fix.php?id=49179&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=49179&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=49179&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=49179&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=49179&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=49179&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=49179&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=49179&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=49179&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=49179&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=49179&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=49179&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=49179&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=49179&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=49179&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=49179&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=49179&r=mysqlcfg

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