Online PHP editor | refs for 2HKr6

<?php $t = ['test' => 'test']; $ake_start = microtime(true); for ($i = 0; $i < 1000000; $i++) { array_key_exists('test', $t).PHP_EOL; } echo (microtime(true) - $ake_start); $iss_start = microtime(true); for ($i = 0; $i < 1000000; $i++) { isset($t['test']); } echo (microtime(true) - $iss_start);