3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test(string $a = null) { var_dump($a); } test(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)
8.3.70.0100.01016.38
8.3.60.0100.00316.63
8.3.50.0090.01021.21
8.3.40.0070.00718.42
8.3.30.0090.00618.38
8.3.20.0050.00220.29
8.3.10.0000.00721.90
8.3.00.0000.00723.48
8.2.190.0110.00416.58
8.2.180.0090.00916.32
8.2.170.0080.00822.96
8.2.160.0100.00322.08
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0080.00020.68
8.2.120.0040.00426.35
8.2.110.0030.00621.11
8.2.100.0080.00417.80
8.2.90.0000.00819.10
8.2.80.0000.00917.97
8.2.70.0060.00317.50
8.2.60.0000.00717.68
8.2.50.0000.00818.09
8.2.40.0030.00522.27
8.2.30.0000.00719.25
8.2.20.0040.00417.46
8.2.10.0050.00317.97
8.2.00.0040.00417.85
8.1.280.0120.00325.92
8.1.270.0040.00422.09
8.1.260.0080.00028.09
8.1.250.0050.00228.09
8.1.240.0070.00322.47
8.1.230.0100.00017.70
8.1.220.0080.00017.74
8.1.210.0000.00918.77
8.1.200.0100.00017.10
8.1.190.0040.00416.98
8.1.180.0000.00818.10
8.1.170.0040.00418.37
8.1.160.0040.00420.73
8.1.150.0000.00718.68
8.1.140.0030.00519.53
8.1.130.0000.00717.55
8.1.120.0030.00317.37
8.1.110.0000.00817.37
8.1.100.0050.00217.33
8.1.90.0050.00517.20
8.1.80.0040.00717.36
8.1.70.0030.00317.38
8.1.60.0020.00817.51
8.1.50.0110.00617.36
8.1.40.0160.00417.38
8.1.30.0120.00417.62
8.1.20.0080.00617.53
8.1.10.0140.00417.31
8.1.00.0070.00617.30
8.0.300.0000.00718.77
8.0.290.0000.00716.58
8.0.280.0000.00718.22
8.0.270.0000.00717.07
8.0.260.0060.00017.12
8.0.250.0030.00316.72
8.0.240.0030.00516.85
8.0.230.0070.00016.84
8.0.220.0030.00316.64
8.0.210.0050.00316.81
8.0.200.0070.00016.82
8.0.190.0040.00416.82
8.0.180.0120.00516.77
8.0.170.0090.00516.72
8.0.160.0090.00516.65
8.0.150.0130.00116.67
8.0.140.0100.00616.66
8.0.130.0110.00414.88
8.0.120.0060.00616.71
8.0.110.0070.00716.70
8.0.100.0100.00516.63
8.0.90.0080.00216.64
8.0.80.0100.00616.71
8.0.70.0120.00316.63
8.0.60.0130.00216.59
8.0.50.0060.00816.64
8.0.30.0090.01016.86
8.0.20.0100.00717.13
8.0.10.0080.00616.87
8.0.00.0110.01416.70
7.4.330.0000.00516.66
7.4.320.0060.00016.47
7.4.300.0030.00316.38
7.4.290.0070.00516.43
7.4.280.0090.00416.47
7.4.270.0090.00316.45
7.4.260.0090.00616.45
7.4.250.0090.00316.43
7.4.240.0100.00216.50
7.4.230.0120.00016.50
7.4.220.0130.00716.37
7.4.210.0060.00916.44
7.4.200.0120.00216.42
7.4.190.0200.00016.57
7.4.180.0180.00316.48
7.4.160.0110.00716.39
7.4.150.0160.00516.70
7.4.140.0130.00617.14
7.4.130.0100.00816.41
7.4.120.0070.01016.27
7.4.110.0130.00516.37
7.4.100.0130.00516.39
7.4.90.0110.00716.39
7.4.80.0130.00717.37
7.4.70.0120.00416.30
7.4.60.0100.01116.23
7.4.50.0110.00616.22
7.4.40.0080.01116.36
7.4.30.0120.00616.28
7.4.20.0130.00516.31
7.4.10.0090.01016.28
7.4.00.0080.00616.07
7.3.330.0130.00214.66
7.3.320.0110.00214.63
7.3.310.0070.00616.01
7.3.300.0080.00616.22
7.3.290.0100.00316.12
7.3.280.0110.00816.21
7.3.270.0100.00816.63
7.3.260.0100.00716.19
7.3.250.0090.00916.26
7.3.240.0170.00216.29
7.3.230.0130.00616.31
7.3.220.0130.00416.16
7.3.210.0100.00816.25
7.3.200.0140.00517.21
7.3.190.0110.00916.10
7.3.180.0130.00716.19
7.3.170.0130.00616.25
7.3.160.0100.00716.29
7.3.150.0100.00716.16
7.3.140.0120.00616.09
7.3.130.0140.00516.22
7.3.120.0070.01116.23
7.3.110.0100.00816.19
7.3.100.0140.00816.20
7.3.90.0120.00716.46
7.3.80.0130.00616.24
7.3.70.0080.01016.25
7.3.60.0130.00516.33
7.3.50.0120.00716.37
7.3.40.0090.01016.21
7.3.30.0120.00616.28
7.3.20.0150.00716.89
7.3.10.0120.00916.87
7.3.00.0170.00816.81
7.2.340.0130.00516.19
7.2.330.0070.01016.31
7.2.320.0110.00916.29
7.2.310.0140.00616.29
7.2.300.0120.00616.29
7.2.290.0120.00716.17
7.2.280.0100.00716.10
7.2.270.0140.00516.25
7.2.260.0110.01016.24
7.2.250.0140.00616.25
7.2.240.0140.00616.18
7.2.230.0080.01016.33
7.2.220.0110.00616.32
7.2.210.0130.00716.28
7.2.200.0120.00716.39
7.2.190.0100.00916.33
7.2.180.0120.00816.30
7.2.170.0130.00716.38
7.2.160.0130.00716.36
7.2.150.0100.01017.02
7.2.140.0140.00916.98
7.2.130.0150.00817.09
7.2.120.0150.00817.12
7.2.110.0130.00617.01
7.2.100.0100.01016.95
7.2.90.0130.01017.05
7.2.80.0130.00916.96
7.2.70.0130.01017.00
7.2.60.0210.01016.94
7.2.50.0160.00516.95
7.2.40.0120.01017.06
7.2.30.0160.00417.01
7.2.20.0130.00817.07
7.2.10.0100.01217.02
7.2.00.0100.01017.58
7.1.330.0330.00616.10
7.1.320.0180.01116.14
7.1.310.0170.00616.11
7.1.300.0150.00816.11
7.1.290.0130.01016.06
7.1.280.0460.00716.13
7.1.270.0160.00516.17
7.1.260.0160.00616.14
7.1.250.0130.00816.15
7.1.240.0150.00716.05
7.1.230.0100.00916.04
7.1.220.0090.00916.01
7.1.210.0140.00816.12
7.1.200.0110.00716.13
7.1.190.0140.00516.05
7.1.180.0130.00816.04
7.1.170.0090.00916.12
7.1.160.0150.00516.04
7.1.150.0120.00616.08
7.1.140.0160.00616.13
7.1.130.0170.00916.07
7.1.120.0150.00416.10
7.1.110.0240.00716.07
7.1.100.0150.00616.56
7.1.90.0120.00616.06
7.1.80.0100.00816.03
7.1.70.0120.00616.34
7.1.60.0130.00816.90
7.1.50.0100.00916.32
7.1.40.0140.00416.05
7.1.30.0130.00516.05
7.1.20.0080.01216.09
7.1.10.0110.00816.13
7.1.00.0150.02317.61
7.0.330.0110.00615.72
7.0.320.0080.01315.60
7.0.310.0190.00515.63
7.0.300.0140.00415.74
7.0.290.0130.00915.74
7.0.280.0160.00415.81
7.0.270.0170.00715.72
7.0.260.0160.00315.71
7.0.250.0140.00315.79
7.0.240.0140.00615.73
7.0.230.0090.00715.87
7.0.220.0110.00615.72
7.0.210.0140.00715.71
7.0.200.0120.00715.93
7.0.190.0110.00815.79
7.0.180.0090.00815.75
7.0.170.0130.00415.81
7.0.160.0080.01015.78
7.0.150.0140.00515.74
7.0.140.0300.00615.69
7.0.130.0090.01015.79
7.0.120.0150.00615.84
7.0.110.0120.00615.71
7.0.100.0100.00815.70
7.0.90.0100.00915.71
7.0.80.0110.00715.71
7.0.70.0140.00615.70
7.0.60.0130.01717.25
7.0.50.0070.02016.20
7.0.40.0100.02716.85
7.0.30.0170.01816.87
7.0.20.0170.02016.83
7.0.10.0120.01316.86
7.0.00.0110.01916.73
5.6.400.0130.00815.60
5.6.390.0130.00815.65
5.6.380.0120.00915.60
5.6.370.0050.01515.60
5.6.360.0140.00815.55
5.6.350.0080.01315.58
5.6.340.0170.00315.58
5.6.330.0140.00715.63
5.6.320.0130.01015.62
5.6.310.0110.01215.53
5.6.300.0090.01215.44
5.6.290.0140.00615.57
5.6.280.0100.01416.90
5.6.270.0110.01015.63
5.6.260.0140.00815.65
5.6.250.0140.00815.53
5.6.240.0080.01315.59
5.6.230.0140.00815.60
5.6.220.0120.01015.65
5.6.210.0120.02716.93
5.6.200.0120.02116.25
5.6.190.0140.02316.87
5.6.180.0140.02816.80
5.6.170.0160.01616.88
5.6.160.0130.02816.83
5.6.150.0130.02216.30
5.6.140.0140.02216.39
5.6.130.0100.03116.26
5.6.120.0110.02517.09
5.6.110.0120.02616.89
5.6.100.0110.01616.90
5.6.90.0120.01716.97
5.6.80.0110.02316.78
5.6.70.0170.00815.74
5.6.60.0100.01015.75
5.6.50.0160.00815.52
5.6.40.0170.00515.69
5.6.30.0140.00715.55
5.6.20.0140.00515.62
5.6.10.0170.00515.46
5.6.00.0140.00915.56
5.5.380.0110.01015.64
5.5.370.0130.01115.69
5.5.360.0150.00415.51
5.5.350.0120.02616.83
5.5.340.0140.01816.19
5.5.330.0150.02516.68
5.5.320.0230.02416.68
5.5.310.0170.02116.73
5.5.300.0110.02616.14
5.5.290.0100.01716.21
5.5.280.0080.02716.86
5.5.270.0160.02416.87
5.5.260.0130.02416.82
5.5.250.0150.02316.82
5.5.240.0140.02616.76
5.5.230.0130.00715.58
5.5.220.0170.00315.61
5.5.210.0120.00915.53
5.5.200.0160.00815.47
5.5.190.0110.00915.54
5.5.180.0150.00515.41
5.5.170.0150.00615.47
5.5.160.0100.01015.46
5.5.150.0110.00915.40
5.5.140.0140.00615.36
5.5.130.0080.01115.37
5.5.120.0130.00715.33
5.5.110.0140.00615.28
5.5.100.0130.00715.54
5.5.90.0130.00615.58
5.5.80.0110.00815.58
5.5.70.0080.01215.54
5.5.60.0120.01015.60
5.5.50.0180.00715.58
5.5.40.0160.00815.50
5.5.30.0150.00915.53
5.5.20.0150.00815.54
5.5.10.0130.00815.43
5.5.00.0130.00615.40

preferences:
31.92 ms | 401 KiB | 5 Q