3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a {function c(int $a = null) {} } class b extends a {function c(?int $a = null) {} } class d extends b {function c(int $a = null) {} }

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)
8.4.120.0070.00924.14
8.4.110.0110.00622.29
8.4.100.0130.00417.69
8.4.90.0160.00418.57
8.4.80.0140.00717.82
8.4.70.0050.00717.91
8.4.60.0110.00818.83
8.4.50.0110.00818.43
8.4.40.0200.00818.38
8.4.30.0090.00618.68
8.4.20.0190.00019.66
8.4.10.0090.00019.63
8.3.250.0110.00816.80
8.3.240.0100.00917.10
8.3.230.0040.00416.41
8.3.220.0120.00517.20
8.3.210.0040.00416.57
8.3.200.0050.00416.61
8.3.190.0110.00817.08
8.3.180.0130.00518.94
8.3.170.0040.00417.07
8.3.160.0050.00316.45
8.3.150.0150.00317.20
8.3.140.0040.00416.36
8.3.130.0000.00918.04
8.3.120.0090.00019.05
8.3.110.0080.00020.94
8.3.100.0040.00416.33
8.3.90.0070.00026.77
8.3.80.0040.00419.36
8.3.70.0040.01118.26
8.3.60.0090.00618.23
8.3.50.0060.01316.50
8.3.40.0140.00719.67
8.3.30.0190.00318.82
8.3.20.0130.00921.60
8.3.10.0120.00921.55
8.3.00.0110.01118.85
8.2.290.0110.00820.51
8.2.280.0120.00616.40
8.2.270.0130.00616.46
8.2.260.0000.00818.66
8.2.250.0080.00018.32
8.2.240.0060.00316.83
8.2.230.0080.00022.58
8.2.220.0040.01124.06
8.2.210.0000.00826.77
8.2.200.0070.00418.88
8.2.190.0110.01116.58
8.2.180.0150.00616.38
8.2.170.0100.01018.83
8.2.160.0160.00019.97
8.2.150.0080.00818.90
8.2.140.0120.00320.45
8.2.130.0110.00420.52
8.2.120.0060.00918.98
8.2.110.0060.00919.15
8.2.100.0040.01119.13
8.2.90.0100.00618.84
8.2.80.0090.00619.00
8.2.70.0040.01218.68
8.2.60.0090.00618.85
8.2.50.0080.00819.02
8.2.40.0030.01318.74
8.2.30.0120.00318.53
8.2.20.0110.00418.71
8.2.10.0140.00018.56
8.2.00.0090.00618.54
8.1.330.0110.00723.76
8.1.320.0110.00815.86
8.1.310.0040.00418.32
8.1.300.0050.00515.98
8.1.290.0040.00430.84
8.1.280.0120.00325.92
8.1.270.0030.01022.06
8.1.260.0070.00721.95
8.1.250.0090.00522.01
8.1.240.0070.00718.36
8.1.230.0140.00018.48
8.1.220.0120.00318.60
8.1.210.0110.00318.30
8.1.200.0110.00318.58
8.1.190.0070.00718.61
8.1.180.0040.01118.30
8.1.170.0070.00718.69
8.1.160.0070.00718.23
8.1.150.0070.00718.56
8.1.140.0070.00718.61
8.1.130.0070.00718.78
8.1.120.0090.00618.55
8.1.110.0090.00618.46
8.1.100.0040.01119.61
8.1.90.0090.00618.23
8.1.80.0060.00919.64
8.1.70.0040.01118.67
8.1.60.0180.00018.51
8.1.50.0100.00618.45
8.1.40.0070.01118.55
8.1.30.0040.01118.81
8.1.20.0160.00319.93
8.1.10.0120.00418.25
8.1.00.0080.01218.49

preferences:
26.9 ms | 403 KiB | 5 Q