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run code in 300+ PHP versions simultaneously
<?php namespace My; interface Face { const EYES = 'eyes'; } var_dump((new \ReflectionClass(Face::class))->getConstants()); var_dump((new \ReflectionClass(Face::class)->getConstants()));

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)
7.0.00.0030.04020.18
5.6.160.0070.08320.55
5.6.150.0030.04718.12
5.6.140.0070.09018.15
5.6.130.0130.07318.19
5.6.120.0000.07020.89
5.6.110.0000.04321.01
5.6.100.0030.05021.01
5.6.90.0030.04320.88
5.6.80.0170.07020.39
5.5.300.0130.05318.02
5.5.290.0000.06017.95
5.5.280.0070.04320.87
5.5.270.0130.07020.79
5.5.260.0000.07020.72
5.5.250.0100.07020.54
5.5.240.0200.07020.25

preferences:
143.55 ms | 1394 KiB | 7 Q