[PHP-BUG] Req #68584 [NEW]: I hope "unset" keyword can be used after "or"

From:             523826219 at qq dot com
Operating system: Windows&&Linux
PHP version:      Irrelevant
Package:          PHP Language Specification
Bug Type:         Feature/Change Request
Bug description:I hope "unset" keyword can be used after "or"

Description:
------------
<?php
 $myDS=array(1,2,3);
 false===($targetKey=array_search(3,$myDS)) or var_dump($targetKey);  
 // outputs:2

 false===($targetKey=array_search(3,$myDS)) or unset($myDS[$targetKey]);
  
 //  Fail:this is a syntax error!(Actually I just want to remove the
target element with specified value from the array-$myDS,but it does not
work!)



Test script:
---------------
<?php
 $myDS=array(1,2,3);
 false===($targetKey=array_search(3,$myDS)) or var_dump($targetKey);  
 // outputs:2

 false===($targetKey=array_search(3,$myDS)) or unset($myDS[$targetKey]);
  
 //  Fail:this is a syntax error!(Actually I just want to remove the
target element with specified value from the array-$myDS,but it does not
work!)

 =>So ,I hope "unset" keyword  can be used after "or" keyword,Thank you
!

Expected result:
----------------
Actually "exit" keyword can be used after "or" keyword,why not "unset"?
for example:
!defined('IN_MANAGE') or exit('no access for this site!'); // works
successfully

I hope "unset" keyword  can be used after "or" keyword,Thank you !
for example:
!isset($somekey) or unset($myDS[$somekey]);

Actual result:
--------------
Actually "exit" keyword can be used after "or" keyword,why not "unset"?
for example:
!defined('IN_MANAGE') or exit('no access for this site!'); // works
successfully

I hope "unset" keyword  can be used after "or" keyword,Thank you !
for example:
!isset($somekey) or unset($myDS[$somekey]);

-- 
Edit bug report at https://bugs.php.net/bug.php?id=68584&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=68584&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=68584&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=68584&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=68584&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=68584&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=68584&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=68584&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=68584&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=68584&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=68584&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=68584&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=68584&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=68584&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68584&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=68584&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=68584&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=68584&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=68584&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=68584&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=68584&r=mysqlcfg