3v4l.org

run code in 500+ PHP versions simultaneously
<?php $data = [['a']]; array_map(reset(...), $data);

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)
8.5.30.0120.00617.59
8.4.90.0090.00717.91
8.3.180.0040.00316.87
8.3.50.0100.00816.78

preferences:
41.93 ms | 501 KiB | 5 Q