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run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); class InterfaceA { 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)
7.0.00.0130.08020.15
5.6.160.0070.08020.54
5.6.150.0030.08718.15
5.6.140.0100.06718.18
5.6.130.0100.04018.15
5.6.120.0100.07321.00
5.6.110.0030.04720.99
5.6.100.0070.07021.13
5.6.90.0200.07320.88
5.6.80.0030.06720.39
5.5.300.0070.03718.03
5.5.290.0070.08317.95
5.5.280.0100.07020.75
5.5.270.0070.04020.79
5.5.260.0000.04720.94
5.5.250.0070.03720.69
5.5.240.3100.02720.26

preferences:
141.43 ms | 1394 KiB | 7 Q