3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); class InterfaceA { abstract function beMyself(): self; } class ClassA extends InterfaceA { function beMyself(): self { return $this; } } var_dump((new ClassA)->beMyself());

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)
7.0.00.0030.06320.12
5.6.160.0030.08720.46
5.6.150.0070.08018.18
5.6.140.0100.08018.19
5.6.130.0030.04318.19
5.6.120.0100.08320.87
5.6.110.0070.07021.01
5.6.100.0200.07720.97
5.6.90.0030.05321.03
5.6.80.0100.07720.38
5.5.300.0030.04018.04
5.5.290.0030.08718.01
5.5.280.0100.05020.80
5.5.270.0000.04320.76
5.5.260.0100.03720.96
5.5.250.0000.04320.79
5.5.240.2230.03320.04

preferences:
139.51 ms | 1394 KiB | 7 Q