Online PHP editor | refs for MGubW

@ 2014-05-09T17:50:41Z

<?php

$x = null;
$i = 1000000;
$t = microtime(true);

while ($i--) {
 $y = is_null($x);
}

echo microtime(true) - $t, PHP_EOL;

$i = 1000000;
$t = microtime(true);

while ($i--) {
 $y = null === $x;
}

echo microtime(true) - $t, PHP_EOL;