3v4l.org

run code in 300+ PHP versions simultaneously
<?php $now = time(); for($i=0;$i<2000000;$i++) echo ""; $end = time(); echo date("H:i:s:u",$now); echo "\n"; echo date("H:i:s:u",$end); echo "\n"; echo $end-$now;
Output for 5.2.2 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.24, 7.3.0 - 7.3.12
22:44:24:000000 22:44:24:000000 0
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.1
22:44:24:u 22:44:24:u 0
preferences:
131.27 ms | 402 KiB | 264 Q