From:             php_bug at jldupont dot com
Operating system: Linux
PHP version:      5.2.5
PHP Bug Type:     Scripting Engine problem
Bug description:  Switch statement broken when using 'null' value

Description:
------------
The 'switch' statement does not correctly handle the case where the switch
value === null.


Reproduce code:
---------------
The following code should show "null", "true", "false":

 function testSwitch( $v )
 {
  return $v;
 }

 function showResult( $r )
 {
  $v = testSwitch( $r );

  switch ($v)
  {
   case false:
    echo "false";
    break;
   case null:
    echo "null";
    break;
   case true:
    echo "true";
    break;
  }
   echo "\n<br/>";
 }

 showResult( null );
 showResult( true );
 showResult( false );


Expected result:
----------------
null
true
false


Actual result:
--------------
false
true
false


-- 
Edit bug report at http://bugs.php.net/?id=43846&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=43846&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=43846&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): 
http://bugs.php.net/fix.php?id=43846&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=43846&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=43846&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=43846&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=43846&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=43846&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=43846&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=43846&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=43846&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=43846&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=43846&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=43846&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=43846&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=43846&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=43846&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=43846&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=43846&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=43846&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=43846&r=mysqlcfg

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