3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = range(1000, 9999); shuffle($a); printf("%.2F MB\n%.2F MB\n", memory_get_usage() / 1024 / 1024, memory_get_peak_usage() / 1024 / 1024);

preferences:
38.02 ms | 402 KiB | 5 Q