Online PHP editor | refs for 7cfPR

<?php $arr = array( 'foo' => 'bar', 'key' => 'value' ); $start = time(true); for ($i = 0; $i < 10000; $i++) { $a = isset($arr['foo']); $b = isset($arr['bar']); } var_dump(time(true) - $start); $start = time(true); for ($i = 0; $i < 10000; $i++) { $a = array_key_exists('foo', $arr); $b = array_key_exists('bar', $arr); } var_dump(time(true) - $start);