3v4l.org

run code in 300+ PHP versions simultaneously
<?php $max_time = 500; $scriptstart = microtime(true); $used_time = microtime(true) - $scriptstart; sleep($max_time); if ($used_time > $max_time) { var_dump("time is running out... $usedtime"); }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7

Process exited with code 137.
preferences:
94.07 ms | 402 KiB | 91 Q