3v4l.org

run code in 300+ PHP versions simultaneously
<?php $timestamp = serialize(new \DateTime();); var_dump($timestamp); var_dump(unserialize($timestamp))

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
5.6.150.0070.05018.25
5.6.140.0100.03318.25
5.6.130.0030.08718.15
5.6.120.0030.06321.11
5.6.110.0070.08321.11
5.6.100.0030.05320.95
5.6.90.0130.08020.95
5.6.80.0000.07720.53
5.5.300.0070.04717.97
5.5.290.0070.06017.98
5.5.280.0030.05720.97
5.5.270.0130.03320.67
5.5.260.0100.08020.93
5.5.250.0030.05020.79
5.5.240.0200.04720.15

preferences:
147.1 ms | 1394 KiB | 7 Q