3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s = microtime(true); var_dump(microtime(true)-$s); var_dump(microtime(true)-$s); var_dump(microtime(true)-$s); var_dump(microtime(true)-$s); var_dump(microtime(true)-$s); var_dump(microtime(true)-$s); function foo($s) { var_dump(microtime(true)-$s); } echo "----\n"; foo($s); foo($s); foo($s); foo($s); foo($s); foo($s);

preferences:
34.52 ms | 402 KiB | 5 Q