3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A {public ?string $r = '';} class B extends A {public ?string $r;} (new B)->r;

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)
8.3.60.0100.00718.68
8.3.50.0170.00320.20
8.3.40.0100.00319.63
8.3.30.0110.00418.77
8.3.20.0080.00024.18
8.3.10.0080.00024.66
8.3.00.0040.00426.16
8.2.180.0160.00625.92
8.2.170.0090.00619.01
8.2.160.0070.00722.96
8.2.150.0000.00725.66
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0000.00719.83
8.2.110.0000.01020.38
8.2.100.0000.01118.09
8.2.90.0000.00817.63
8.2.80.0030.00618.78
8.2.70.0060.00317.63
8.2.60.0060.00317.63
8.2.50.0050.00318.04
8.2.40.0000.00818.09
8.2.30.0070.00017.98
8.2.20.0000.00719.11
8.2.10.0000.00718.07
8.2.00.0080.00019.14
8.1.280.0150.00025.92
8.1.270.0040.00423.99
8.1.260.0060.00326.35
8.1.250.0050.00328.09
8.1.240.0160.00021.59
8.1.230.0030.00920.89
8.1.220.0040.00418.57
8.1.210.0000.00818.77
8.1.200.0060.00317.23
8.1.190.0040.00417.10
8.1.180.0040.00418.10
8.1.170.0040.00417.62
8.1.160.0040.00420.73
8.1.150.0050.00318.38
8.1.140.0000.00817.38
8.1.130.0000.00918.95
8.1.120.0070.00017.22
8.1.110.0000.00717.32
8.1.100.0020.00517.36
8.1.90.0050.00517.21
8.1.80.0100.00617.34
8.1.70.0050.01117.31
8.1.60.0180.00017.42
8.1.50.0190.00017.48
8.1.40.0080.00817.34
8.1.30.0120.00617.47
8.1.20.0130.00417.57
8.1.10.0150.00417.52
8.1.00.0160.00317.32
8.0.300.0000.00718.77
8.0.290.0050.00316.75
8.0.280.0070.00018.38
8.0.270.0000.00716.81
8.0.260.0030.00318.32
8.0.250.0030.00316.87
8.0.240.0000.00616.82
8.0.230.0000.00716.95
8.0.220.0040.00416.86
8.0.210.0110.00416.84
8.0.200.0130.00316.88
8.0.190.0150.00016.76
8.0.180.0130.00316.75
8.0.170.0140.00016.80
8.0.160.0150.00016.86
8.0.150.0070.01116.81
8.0.140.0110.00416.82
8.0.130.0120.00316.80
8.0.120.0050.01016.87
8.0.110.0000.01416.94
8.0.100.0150.00016.92
8.0.90.0090.00516.75
8.0.80.0070.00716.79
8.0.70.0070.00716.79
8.0.60.0070.00716.87
8.0.50.0060.00616.78
8.0.30.0080.00416.82
8.0.20.0080.00816.90
8.0.10.0080.00816.82
7.4.330.0060.00015.55
7.4.320.0000.00616.44
7.4.300.0170.00016.42
7.4.290.0130.00416.38
7.4.280.0070.00716.34
7.4.270.0140.00016.45
7.4.260.0160.00016.48
7.4.250.0170.00016.42
7.4.240.0050.00816.48
7.4.230.0100.00516.51
7.4.220.0080.00816.43
7.4.210.0140.00016.41
7.4.200.0140.00016.45
7.4.190.0110.00416.47
7.4.180.0090.00616.58
7.4.160.0000.01316.60
7.4.150.0080.00416.36
7.4.140.0130.00016.45
7.4.130.0050.01016.39
7.4.120.0110.00316.39
7.4.110.0140.00016.52
7.4.100.0140.00016.48
7.4.90.0070.00716.52
7.4.80.0140.00016.43
7.4.70.0150.00016.38
7.4.60.0150.00016.48
7.4.50.0110.00316.37
7.4.40.0100.00316.28
7.4.30.0030.00716.21
7.4.20.0090.00416.17
7.4.10.0140.00016.34
7.4.00.0150.00016.39

preferences:
52.6 ms | 400 KiB | 5 Q