3v4l.org

run code in 300+ PHP versions simultaneously
<?php $start = microtime(true); usleep(1000000); $end = microtime(true) - $start; printf("Page was rendered in %f seconds".PHP_EOL, $end); printf("Page was rendered in %f milliseconds".PHP_EOL, $end*1000); printf("Page was rendered in %f microseconds".PHP_EOL, ($end*1000)*1000);

preferences:
47.83 ms | 406 KiB | 5 Q