3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class Base {} class Sub extends Base {} abstract class Parent { abstract public function foo(Base $x); } class Child extends Parent { public function foo(Child $x) {} }

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)
5.6.140.0100.07318.14
5.6.130.0070.06018.18
5.6.120.0200.07721.03
5.6.110.0170.06321.11
5.6.100.0100.06021.04
5.6.90.0070.08721.07
5.6.80.0000.08720.48
5.6.70.4630.03320.52
5.5.300.0030.06718.08
5.5.290.0030.08317.97
5.5.280.0030.07320.80
5.5.270.0000.09320.72
5.5.260.0030.07720.75
5.5.250.0170.07720.70
5.5.240.0270.07320.26
5.4.450.0300.05319.09
5.4.440.0370.04719.54
5.4.430.0330.05319.54
5.4.420.0170.05319.38
5.4.410.0230.05019.45
5.4.400.0130.06018.79
5.4.390.0130.06019.05
5.4.380.0070.06018.79
5.4.370.0270.04719.06
5.4.360.0300.04719.05
5.4.350.0270.05319.18
5.4.340.0270.05018.76
5.4.320.0200.06019.06
5.4.310.0270.04719.04
5.4.300.0230.05019.27
5.4.290.0300.04018.80
5.4.280.0300.06019.23
5.4.270.0300.07018.92
5.4.260.0130.06719.26
5.4.250.0230.05318.89
5.4.240.0170.05719.27
5.4.230.0230.05319.19
5.4.220.0230.06319.05
5.4.210.0270.05319.15
5.4.200.0200.05718.93
5.4.190.0300.04318.93
5.4.180.0130.05718.96
5.4.170.0200.06318.92
5.4.160.0130.06019.21
5.4.150.0330.06019.15
5.4.140.0200.05316.43
5.4.130.0300.06016.38
5.4.120.0300.04016.39
5.4.110.0270.07316.67
5.4.100.0300.06716.71
5.4.90.0230.05316.70
5.4.80.0170.05316.65
5.4.70.0170.05716.57
5.4.60.0230.03716.22
5.4.50.0000.03316.43
5.4.40.0030.05316.51
5.4.30.0000.03716.21
5.4.20.0200.05716.42

preferences:
146.47 ms | 1394 KiB | 7 Q