3v4l.org

run code in 300+ PHP versions simultaneously
<?php function isProgression($array){ return ($array == range(0, $array[sizeof($array)-1])); } function isProgression2($array){ $count = count($array); for ($i = 0; $i < $count; ++$i) { if($array[$i] != $i){ return true; } } return false; } for ($x = 0; $x < 1000; $x++) { // Pick one isProgression(array(0,1,2,3,4,5)); //isProgression2(array(0,1,2,3,4,5)); }
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

preferences:
222.88 ms | 405 KiB | 308 Q