3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = null; $base = 1024; isset($foo) ?? echo 'nop';

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)
7.0.10.0070.09020.30
7.0.00.0170.08020.25
5.6.160.0030.04320.45
5.6.150.0100.07718.21
5.6.140.0100.08018.28
5.6.130.0030.04018.16
5.6.120.0170.05721.12
5.6.110.0100.07320.95
5.6.100.0000.08320.98
5.6.90.0000.05020.97
5.6.80.0100.07720.40
5.5.300.0100.06018.01
5.5.290.0070.05017.92
5.5.280.0130.05320.64
5.5.270.0070.04320.79
5.5.260.0100.08020.86
5.5.250.0100.07020.46
5.5.240.0170.07020.12

preferences:
140.46 ms | 1394 KiB | 7 Q