Online PHP editor | refs for NRDFN

<?php $null = null; $time = microtime(true); for ($i = 0; $i < 10000000; $i++) { $test = is_null($null); } $time1 = microtime(true); for ($i = 0; $i < 10000000; $i++) { $test = null === $null; } $time2 = microtime(true); echo 'is_null: '.($time1 - $time)."\n===: ".($time2 - $time1);