3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { function foo : a { return $this; } } $a = new a; var_dump($a->foo());

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)
5.6.150.0070.03718.16
5.6.140.0100.07318.19
5.6.130.0030.04018.28
5.6.120.0030.08321.12
5.6.110.0130.07721.15
5.6.100.0070.08721.07
5.6.90.0000.06321.00
5.6.80.0070.08020.38
5.5.300.0000.08717.96
5.5.290.0100.08018.05
5.5.280.0000.05020.77
5.5.270.0030.04320.84
5.5.260.0030.06720.95
5.5.250.0030.04320.78
5.5.240.0070.08320.02

preferences:
161.96 ms | 1394 KiB | 7 Q