3v4l.org

run code in 300+ PHP versions simultaneously

sponsor
bughunt
search
recent
about

@ 2013-10-12T12:58:09Z

<?php
//$a = 1; $time=microtime(true);for($x=0;$x<100000;$x++){ $b = is_null($a);}  round(microtime(true)-$time, 5)."\n";
 $a = 1; $time=microtime(true);for($x=0;$x<100000;$x++){ $b = ($a === null);} echo round(microtime(true)-$time, 5)."\n";;

Output
Performance
VLD
References
Branches

microtime: documentation ( source)
round: documentation ( source)

preferences:dark modelive preview

35.04 ms | 402 KiB | 5 Q