Online PHP editor | refs for ralL8

<?php $iterations = 1000000; $strOne = '1'; $strEmpty = ''; $times = ['oneOpEq' => 0, 'oneSlen' => 0, 'empOpEq' => 0, 'empSlen' => 0]; $x = $iterations; $start = microtime(true); while ($x--) { $y = ($strOne === '1'); } $times['oneOpEq'] = microtime(true) - $start; $x = $iterations; $start = microtime(true); while ($x--) { $y = (strlen($strOne) == 0); } $times['oneSlen'] = microtime(true) - $start; $x = $iterations; $start = microtime(true); while ($x--) { $y = ($strEmpty === ''); } $times['empOpEq'] = microtime(true) - $start; $x = $iterations; $start = microtime(true); while ($x--) { $y = (strlen($strEmpty) == 0); } $times['empSlen'] = microtime(true) - $start; var_dump($times);