Online PHP editor | refs for VBMuj

<?php function recurse_array(&$in) { if (is_array($in)) { foreach ($in as &$val) { recurse_array($val); } } } $array = range(1, 1000); $array[1000] = $array; $array[1000][1000] = $array; $array[1000][1000][1000] = $array; $array[1000][1000][1000][1000] = $array; $array[1000][1000][1000][1000][1000] = $array; echo 'memory before: ', memory_get_peak_usage(), "\n"; recurse_array($array); echo 'memory after: ', memory_get_peak_usage();