3v4l.org

run code in 300+ PHP versions simultaneously
<?php $max = 100; $arr = array_fill(0, $max, 1); $mem = memory_get_usage(true); $count = 0; foreach ($arr as $key=>$val) { $count ++; $arr[$max+1] = 9999; } echo 1; echo $count.': '.memory_get_usage(true)-$mem;

preferences:
36.27 ms | 402 KiB | 5 Q