3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); function x(?string $x) { } x(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)
8.3.70.0140.00016.63
8.3.60.0100.01016.63
8.3.50.0090.01216.51
8.3.40.0070.00718.51
8.3.30.0110.00718.58
8.3.20.0000.00820.22
8.3.10.0110.00421.72
8.3.00.0070.01020.13
8.2.190.0110.00318.16
8.2.180.0040.01118.13
8.2.170.0120.00622.96
8.2.160.0090.00920.28
8.2.150.0110.00424.18
8.2.140.0000.00924.66
8.2.130.0030.00520.89
8.2.120.0140.00326.35
8.2.110.0060.01222.30
8.2.100.0000.01217.59
8.2.90.0030.00617.75
8.2.80.0040.00417.97
8.2.70.0000.00817.36
8.2.60.0050.00218.04
8.2.50.0060.00318.10
8.2.40.0080.00020.47
8.2.30.0040.00420.85
8.2.20.0070.00017.84
8.2.10.0040.00417.93
8.2.00.0040.00417.97
8.1.280.0100.01025.92
8.1.270.0030.01022.01
8.1.260.0140.00326.35
8.1.250.0050.00328.09
8.1.240.0060.00322.13
8.1.230.0080.00420.93
8.1.220.0030.00517.74
8.1.210.0040.00418.77
8.1.200.0030.00617.13
8.1.190.0080.00017.10
8.1.180.0040.00418.10
8.1.170.0040.00418.98
8.1.160.0000.00818.82
8.1.150.0000.00718.81
8.1.140.0080.00019.44
8.1.130.0000.00718.75
8.1.120.0000.00717.27
8.1.110.0080.00017.20
8.1.100.0080.00017.34
8.1.90.0030.00517.17
8.1.80.0040.00417.27
8.1.70.0000.00717.28
8.1.60.0000.00817.56
8.1.50.0030.00517.45
8.1.40.0030.00517.38
8.1.30.0080.00017.59
8.1.20.0030.00517.58
8.1.10.0000.00817.34
8.1.00.0000.00717.33
8.0.300.0000.00819.96
8.0.290.0070.00016.75
8.0.280.0000.00718.30
8.0.270.0070.00017.12
8.0.260.0060.00016.70
8.0.250.0030.00316.81
8.0.240.0070.00016.71
8.0.230.0070.00016.82
8.0.220.0040.00416.76
8.0.210.0000.00716.75
8.0.200.0030.00316.71
8.0.190.0040.00416.79
8.0.180.0050.00316.77
8.0.170.0000.00716.84
8.0.160.0000.00816.78
8.0.150.0000.00716.72
8.0.140.0000.00716.72
8.0.130.0030.00313.18
8.0.120.0040.00416.77
8.0.110.0030.00316.62
8.0.100.0030.00516.67
8.0.90.0080.00016.58
8.0.80.0110.00616.72
8.0.70.0000.00716.82
8.0.60.0040.00416.65
8.0.50.0040.00416.79
8.0.30.0110.00717.05
8.0.20.0130.00617.40
8.0.10.0000.00716.91
8.0.00.0110.00716.59
7.4.330.0000.00715.55
7.4.320.0030.00316.47
7.4.300.0030.00316.53
7.4.290.0000.00716.38
7.4.280.0040.00416.55
7.4.270.0000.00616.43
7.4.260.0070.00016.52
7.4.250.0000.00816.40
7.4.240.0050.00216.56
7.4.230.0030.00316.36
7.4.220.0090.00916.46
7.4.210.0080.00816.36
7.4.200.0040.00416.53
7.4.160.0120.00516.47
7.4.150.0060.01017.40
7.4.140.0120.00817.86
7.4.130.0150.00316.35
7.4.120.0100.00716.42
7.4.110.0100.00716.64
7.4.100.0060.01016.34
7.4.90.0150.00316.36
7.4.80.0140.00319.39
7.4.70.0100.00616.59
7.4.60.0040.01216.27
7.4.50.0100.00716.03
7.4.40.0100.00716.41
7.4.30.0060.01016.43
7.4.00.0030.01414.79
7.3.330.0020.00213.19
7.3.320.0050.00013.03
7.3.310.0000.00616.09
7.3.300.0030.00316.14
7.3.290.0070.00716.26
7.3.280.0050.01116.22
7.3.270.0070.01117.40
7.3.260.0070.00916.27
7.3.250.0080.00916.20
7.3.240.0080.00916.37
7.3.230.0030.01816.19
7.3.210.0090.00616.30
7.3.200.0090.00616.18
7.3.190.0130.00716.15
7.3.180.0100.00616.30
7.3.170.0090.00716.51
7.3.160.0110.00516.38
7.3.10.0240.00016.11
7.3.00.0070.00716.02
7.2.330.0120.00616.61
7.2.320.0030.01416.38
7.2.310.0090.00616.58
7.2.300.0140.00316.65
7.2.290.0110.00416.47
7.2.130.0220.00516.72
7.2.120.0240.00816.47
7.2.110.0110.00716.12
7.2.100.0140.00716.47
7.2.90.0220.00416.04
7.2.80.0200.00616.20
7.2.70.0280.00316.23
7.2.60.0100.00816.47
7.2.50.0150.00316.55
7.2.40.0180.00816.37
7.2.30.0000.01316.14
7.2.20.0110.01116.27
7.2.10.0130.00216.29
7.2.00.0070.00817.82
7.1.250.0120.01315.35
7.1.200.0090.00315.53
7.1.100.0050.00817.79
7.1.70.0110.01116.73
7.1.60.0330.01235.00
7.1.50.0270.02034.63
7.1.40.0840.01334.25
7.1.30.0330.01734.25
7.1.20.0350.01334.48
7.1.10.0150.00716.45
7.1.00.0080.00816.24
7.0.200.0120.00916.32
7.0.190.0080.01316.38
7.0.180.0110.01116.02
7.0.170.0140.00715.96
7.0.160.0090.01316.16
7.0.150.0080.01616.13
7.0.140.0060.01616.28
7.0.130.0120.00916.48
7.0.120.0090.01316.24
7.0.110.0070.01016.00
7.0.100.0100.01516.15
7.0.90.0060.00916.26
7.0.80.0030.01616.10
7.0.70.0090.00616.11
7.0.60.0130.00815.95
7.0.50.0040.01516.23
7.0.40.0030.01716.29
7.0.30.0080.00816.25
7.0.20.0150.00616.02
7.0.10.0040.01516.43
7.0.00.0070.01316.31

preferences:
20.41 ms | 401 KiB | 5 Q