3v4l.org

run code in 300+ PHP versions simultaneously
<?php $count = 100000; $a = array(); for ($i = 0; $i < $count; $i++) { if ($i % 2) { $a['key_' . $i] = 'ok'; } } $time = microtime(true); $result = 0; for ($i = 0; $i < $count; $i++) { if (array_key_exists('key_' . $i, $a)) { ++$result; } } $time = microtime(true) - $time; echo number_format($time, 3) . ' seconds and returned ' . $result . "\n";

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37.87 ms | 402 KiB | 5 Q