3v4l.org

run code in 300+ PHP versions simultaneously
<?php function doSmth(int $mem): void { $array = range(0, 99); echo 'memory in function: ' . memory_get_usage() - $mem . PHP_EOL; } // Сначала инициализируем переменную $mem $mem = memory_get_usage(); echo 'init $mem' . PHP_EOL; echo 'memory before use: ' . memory_get_usage() . PHP_EOL; doSmth($mem); echo 'memory after use: ' . memory_get_usage() - $mem . PHP_EOL;

preferences:
22.29 ms | 405 KiB | 5 Q