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run code in 300+ PHP versions simultaneously
<?php class time { const second = 1000; const minute = 60000; const hour = 3600000; const day = 86400000; const week = 604800000; const month = 18144000000; static public function now() { return microtime(true); } static public function since ($time) { return microtime(true)-$time; } } $start = time::now(); sleep(2 * time::second); echo time::since($start);
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.6

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