Online PHP editor | refs for L7cnd

<?php $times = 10000; $var = null; $var = new stdClass(); $time1 = microtime(true); for ($i = 0; $i <= $times; $i++) { if (!$var instanceof stdClass) {} } $time1 = microtime(true) - $time1; //echo "Time using '!': $time1\n"; $time2 = microtime(true); for ($i = 0; $i <= $times; $i++) { if ($var === null) {} } $time2 = microtime(true) - $time2; //echo "Time using '===': $time2\n"; if ($time1 > $time2){ $p = (($time1-$time2)/$time2) * 100; //printf("'!== null' was faster by %.2f percent.", $p); printf("'=== null' was faster"); } else { $p = (($time2-$time1)/$time1) * 100; //printf("'instanceof' was faster by %.2f percent.", $p); printf("'!instanceof' was faster"); }