Online PHP editor | output for YAWK2

<?php function doSmth(array &$array, int $memory) { printf('memory: %s%s', memory_get_usage() - $memory, PHP_EOL); $array[0] = 0; printf('memory: %s%s', memory_get_usage() - $memory, PHP_EOL); foreach ($array as $i => $value) { $array[$i] ++; } printf('memory: %s%s', memory_get_usage() - $memory, PHP_EOL); } $memory = memory_get_usage(); $array = range(0, 99); doSmth($array, $memory); printf('memory: %s%s', memory_get_usage() - $memory, PHP_EOL);