3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a[0] = 0; $a[1] = 1; unset($a[1]); var_dump(array_is_list($a)); $a[] = 2; var_dump(array_is_list($a));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.300.0150.00519.99

preferences:
33.16 ms | 403 KiB | 5 Q