3v4l.org

run code in 300+ PHP versions simultaneously
<?php $code = <<<'EOT' <?php $a = function(){}; unset($a); EOT; $file = tempnam(sys_get_temp_dir(), 'a'); file_put_contents($file, $code); echo "0 ", number_format(memory_get_usage())."\n"; for ($i = 0; $i <= 50000; $i++) { include $file; if (strlen(rtrim($i, "0")) == 1) { echo str_pad($i,6), " ", number_format(memory_get_usage())."\n"; } }
preferences:
35.2 ms | 402 KiB | 5 Q