From: lunter at interia dot pl
Operating system: winXP
PHP version: 5.3.0RC1
PHP Bug Type: Scripting Engine problem
Bug description: is_null() is 4x slower than ===null
Description:
------------
is_null() is 4x slower than ===null
Reproduce code:
---------------
<?
$t=microtime(1);
for($z=0;$z<1e7;$z++){
if(is_null(1)){}
}
print(microtime(1)-$t);print('<br/>');
// ---
$t=microtime(1);
for($z=0;$z<1e7;$z++){
if(1===null){}
}
print(microtime(1)-$t);print('<br/>');
?>
Expected result:
----------------
is_null() is faster like ===null
Actual result:
--------------
is_null() is 4x slower than ===null
--
Edit bug report at http://bugs.php.net/?id=47965&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=47965&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=47965&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=47965&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=47965&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=47965&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=47965&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=47965&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=47965&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=47965&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=47965&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=47965&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=47965&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=47965&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=47965&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=47965&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=47965&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=47965&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=47965&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=47965&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=47965&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=47965&r=mysqlcfg
