3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array(); $size = 1000; while($size--) $arr[] = md5(microtime()); $start = microtime(true); count($arr); echo round(microtime(true) - $start, 3); ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
0
preferences:
145.92 ms | 404 KiB | 215 Q