3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); /** * @param array<string,mixed> $a */ function f(array $headers): void { foreach ($headers as $name => $value) { if (str_starts_with($name, 'x-')) { // ... } } } f(['0' => 'hello php']);

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)
8.5.10.0030.00418.70
8.5.00.0150.00720.18
8.4.150.0020.00114.05
8.4.140.0100.01317.78
8.4.130.0120.00517.50
8.4.120.0080.01122.37
8.4.110.0120.00822.23
8.4.100.0150.00618.70
8.4.90.0140.00718.78
8.4.80.0110.00917.77
8.4.70.0060.01317.79
8.4.60.0120.01018.50
8.4.50.0160.00420.55
8.4.40.0070.01417.63
8.4.30.0130.00720.21
8.4.20.0120.00819.71
8.4.10.0060.00319.81
8.3.280.0090.01018.64
8.3.270.0130.00616.53
8.3.260.0110.00916.73
8.3.250.0100.01118.88
8.3.240.0070.00717.36
8.3.230.0110.00916.85
8.3.220.0090.00818.81
8.3.210.0080.00716.78
8.3.200.0120.00716.54
8.3.190.0110.00717.04
8.3.180.0110.00816.79
8.3.170.0030.01017.20
8.3.160.0140.00520.64
8.3.150.0130.00617.23
8.3.140.0160.00317.19
8.3.130.0060.00318.41
8.3.120.0030.00618.80
8.3.110.0090.00020.94
8.3.100.0030.00624.06
8.3.90.0070.00026.77
8.3.80.0040.00716.50
8.3.70.0130.00316.58
8.3.60.0080.01216.50
8.3.50.0060.01520.34
8.3.40.0100.00720.03
8.3.30.0120.00318.52
8.3.20.0040.00424.18
8.3.10.0040.00424.66
8.3.00.0070.00026.16
8.2.290.0030.00420.51
8.2.280.0070.01318.39
8.2.270.0080.00017.34
8.2.260.0040.00416.77
8.2.250.0140.00716.56
8.2.240.0050.00317.26
8.2.230.0060.00322.58
8.2.220.0090.00037.54
8.2.210.0070.00726.77
8.2.200.0000.00916.63
8.2.190.0090.00916.58
8.2.180.0070.01425.92
8.2.170.0190.00019.04
8.2.160.0030.01022.96
8.2.150.0040.00425.66
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0080.00026.16
8.2.110.0060.00319.19
8.2.100.0070.00417.91
8.2.90.0090.00019.18
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0040.00417.93
8.2.50.0000.00918.07
8.2.40.0040.00419.78
8.2.30.0040.00418.01
8.2.20.0050.00320.41
8.2.10.0070.00017.55
8.2.00.0040.00419.34
8.1.330.0090.00922.06
8.1.320.0090.01016.09
8.1.310.0100.00718.52
8.1.300.0030.00617.89
8.1.290.0060.00330.84
8.1.280.0090.00925.92
8.1.270.0000.00823.99
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00919.33
8.1.230.0100.00317.42
8.1.220.0060.00317.74
8.1.210.0000.00818.77
8.1.200.0080.00017.35
8.1.190.0000.00817.25
8.1.180.0040.00418.10
8.1.170.0060.00318.59
8.1.160.0080.00018.95
8.1.150.0040.00418.55
8.1.140.0070.00017.36
8.1.130.0000.00718.89
8.1.120.0050.00317.46
8.1.110.0040.00417.46
8.1.100.0020.00517.34
8.1.90.0070.00017.45
8.1.80.0070.00317.39
8.1.70.0000.00717.35
8.1.60.0050.00217.56
8.1.50.0040.00417.47
8.1.40.0030.00617.54
8.1.30.0000.00817.61
8.1.20.0140.00317.65
8.1.10.0170.00717.43
8.1.00.0170.00617.44
8.0.300.0070.00018.77
8.0.290.0040.00416.88
8.0.280.0040.00418.43
8.0.270.0040.00416.87
8.0.260.0000.00718.31
8.0.250.0030.00316.89
8.0.240.0040.00416.90
8.0.230.0030.00316.97
8.0.220.0070.00016.90
8.0.210.0000.00716.88
8.0.200.0040.00416.96
8.0.190.0080.00017.01
8.0.180.0110.00016.89
8.0.170.0050.00316.96
8.0.160.0000.00816.90
8.0.150.0040.00916.88
8.0.140.0140.00516.82
8.0.130.0150.00516.81
8.0.120.0130.00716.91
8.0.110.0130.00516.84
8.0.100.0190.00216.89
8.0.90.0150.00416.84
8.0.80.0140.00716.84
8.0.70.0130.00716.72
8.0.60.0150.00416.93
8.0.50.0180.00216.80
8.0.30.0130.00816.90
8.0.20.0150.00416.97
8.0.10.0160.00416.99
8.0.00.0080.00216.96
7.4.330.0000.00515.55
7.4.320.0000.00616.65
7.4.300.0030.00316.62
7.4.290.0050.00316.44
7.4.280.0000.00816.48
7.4.270.0140.00816.43
7.4.260.0180.00116.51
7.4.250.0160.00516.39
7.4.240.0140.00516.42
7.4.230.0150.00516.49
7.4.220.0100.00716.41
7.4.210.0120.00716.50
7.4.200.0180.00216.51
7.4.190.0170.00216.59
7.4.180.0180.00216.53
7.4.160.0170.00216.43
7.4.150.0160.00216.49
7.4.140.0140.00616.35
7.4.130.0110.00716.40
7.4.120.0150.00216.47
7.4.110.0140.00016.43
7.4.100.0130.00316.45
7.4.90.0090.00416.46
7.4.80.0090.00516.37
7.4.70.0120.00216.38
7.4.60.0140.00216.48
7.4.50.0120.00616.40
7.4.40.0130.00516.34
7.4.30.0100.00816.48
7.4.20.0130.00616.32
7.4.10.0100.00416.47
7.4.00.0080.00716.38
7.3.330.0160.00316.33
7.3.320.0140.00516.32
7.3.310.0160.00316.32
7.3.300.0140.00716.20
7.3.290.0150.00416.23
7.3.280.0140.00516.16
7.3.270.0180.00016.39
7.3.260.0190.00016.35
7.3.250.0190.00016.37
7.3.240.0180.00416.37
7.3.230.0110.00816.36
7.3.220.0190.00016.19
7.3.210.0140.00616.20
7.3.200.0130.00616.16
7.3.190.0150.00516.36
7.3.180.0190.00416.30
7.3.170.0170.00216.39
7.3.160.0130.00716.36
7.3.150.0150.00416.23
7.3.140.0190.00016.37
7.3.130.0160.00416.20
7.3.120.0220.00016.31
7.3.110.0110.00915.99
7.3.100.0180.00016.07
7.3.90.0190.00016.61
7.3.80.0150.00416.15
7.3.70.0200.00016.25
7.3.60.0180.00016.36
7.3.50.0140.00516.47
7.3.40.0200.00016.32
7.3.30.0120.00616.45
7.3.20.0150.00418.34
7.3.10.0120.00618.25
7.3.00.0140.00618.02
7.2.340.0180.00016.41
7.2.330.0170.00316.39
7.2.320.0160.00316.40
7.2.310.0190.00016.40
7.2.300.0180.00016.39
7.2.290.0150.00716.22
7.2.280.0190.00016.26
7.2.270.0190.00016.36
7.2.260.0200.00316.20
7.2.250.0110.00716.25
7.2.240.0150.00416.39
7.2.230.0150.00416.28
7.2.220.0140.00516.18
7.2.210.0130.00616.38
7.2.200.0190.00316.59
7.2.190.0150.00616.55
7.2.180.0160.00416.51
7.2.170.0150.00416.45
7.2.160.0110.00816.66
7.2.150.0140.00718.25
7.2.140.0100.01018.29
7.2.130.0220.00018.54
7.2.120.0140.00518.57
7.2.110.0080.01318.35
7.2.100.0110.00718.47
7.2.90.0130.00718.27
7.2.80.0130.00618.27
7.2.70.0200.00018.45
7.2.60.0170.00218.45
7.2.50.0160.00318.23
7.2.40.0160.00418.47
7.2.30.0210.00018.52
7.2.20.0170.00318.50
7.2.10.0140.00718.49
7.2.00.0180.00418.46
7.1.330.0150.00317.23
7.1.320.0170.00017.34
7.1.310.0140.00417.26
7.1.300.0120.00617.15
7.1.290.0170.00017.07
7.1.280.0150.00317.19
7.1.270.0150.00317.24
7.1.260.0180.00017.29
7.1.250.0140.00517.19
7.1.240.0130.00417.14
7.1.230.0150.00217.28
7.1.220.0150.00317.07
7.1.210.0120.00617.22
7.1.200.0180.00017.09
7.1.190.0120.00617.23
7.1.180.0170.00017.05
7.1.170.0110.00717.21
7.1.160.0090.00917.08
7.1.150.0130.00417.07
7.1.140.0120.00617.04
7.1.130.0140.00417.13
7.1.120.0180.00016.98
7.1.110.0180.00017.00
7.1.100.0130.00917.11
7.1.90.0120.00617.05
7.1.80.0060.01217.28
7.1.70.0150.00317.14
7.1.60.0140.00517.15
7.1.50.0170.00017.20
7.1.40.0270.00017.30
7.1.30.0140.00417.12
7.1.20.0130.00517.36
7.1.10.0150.00317.19
7.1.00.0140.00417.20
7.0.330.0120.00616.98
7.0.320.0140.00416.94
7.0.310.0200.00016.91
7.0.300.0140.00716.80
7.0.290.0210.00017.05
7.0.280.0190.00416.86
7.0.270.0180.00416.77
7.0.260.0150.00517.07
7.0.250.0200.00017.19
7.0.240.0190.00317.11
7.0.230.0220.00017.04
7.0.220.0160.00516.82
7.0.210.0170.00717.04
7.0.200.0150.00617.03
7.0.190.0220.00017.08
7.0.180.0100.01016.96
7.0.170.0190.00217.07
7.0.160.0180.00216.92
7.0.150.0160.00316.77
7.0.140.0120.00816.98
7.0.130.0160.00617.04
7.0.120.0140.00716.97
7.0.110.0180.00316.76
7.0.100.0130.00717.00
7.0.90.0140.00916.95
7.0.80.0160.00316.73
7.0.70.0130.00916.93
7.0.60.0180.00316.93
7.0.50.0210.00016.80
7.0.40.0130.00717.07
7.0.30.0150.00616.85
7.0.20.0180.00816.98
7.0.10.0170.00417.06
7.0.00.0060.00616.81
5.6.400.0110.00815.74
5.6.390.0120.00815.66
5.6.380.0190.00215.46
5.6.370.0170.00515.43
5.6.360.0200.00315.69
5.6.350.0210.00015.41
5.6.340.0160.00515.39
5.6.330.0210.00015.61
5.6.320.0150.00515.62
5.6.310.0200.00315.55
5.6.300.0100.01015.54
5.6.290.0170.00015.49
5.6.280.0140.00315.57
5.6.270.0130.00315.64
5.6.260.0140.00315.64
5.6.250.0130.00215.57
5.6.240.0110.00515.70
5.6.230.0140.00315.70
5.6.220.0170.00015.51
5.6.210.0170.00015.64
5.6.200.0160.00015.84
5.6.190.0140.00315.68
5.6.180.0150.00415.81
5.6.170.0150.00215.72
5.6.160.0110.00815.54
5.6.150.0130.00315.81
5.6.140.0110.00615.51
5.6.130.0160.00015.55
5.6.120.0070.01015.69
5.6.110.0140.00315.43
5.6.100.0170.00015.44
5.6.90.0170.00015.58
5.6.80.0140.00415.51
5.6.70.0170.00015.47
5.6.60.0160.00015.63
5.6.50.0110.00715.49
5.6.40.0170.00015.49
5.6.30.0130.00315.68
5.6.20.0050.01115.38
5.6.10.0170.00015.60
5.6.00.0160.00015.35
5.5.380.0110.00615.54
5.5.370.0170.00015.77
5.5.360.0140.00315.42
5.5.350.0140.00215.42
5.5.340.0140.00315.50
5.5.330.0150.00315.41
5.5.320.0150.00315.45
5.5.310.0160.00015.43
5.5.300.0110.00515.33
5.5.290.0120.00415.63
5.5.280.0150.00515.53
5.5.270.0110.00615.40
5.5.260.0160.00015.28
5.5.250.0110.00815.44
5.5.240.0140.00315.53
5.5.230.0130.00315.45
5.5.220.0090.00715.69
5.5.210.0090.00615.66
5.5.200.0160.00015.36
5.5.190.0060.00915.25
5.5.180.0160.00315.36
5.5.170.0120.00315.41
5.5.160.0160.00015.36
5.5.150.0120.00515.23
5.5.140.0150.00015.38
5.5.130.0080.00815.38
5.5.120.0100.00615.14
5.5.110.0150.00515.23
5.5.100.0080.00815.63
5.5.90.0160.00015.46
5.5.80.0170.00015.33
5.5.70.0040.01215.60
5.5.60.0130.00315.39
5.5.50.0120.00415.45
5.5.40.0150.00415.45
5.5.30.0160.00015.41
5.5.20.0080.00815.61
5.5.10.0120.00415.54
5.5.00.0120.00415.32
5.4.450.0080.00412.41
5.4.440.0130.00012.43
5.4.430.0070.00712.42
5.4.420.0140.00012.57
5.4.410.0090.00412.40
5.4.400.0130.00012.37
5.4.390.0100.00312.18
5.4.380.0130.00012.25
5.4.370.0110.00212.52
5.4.360.0090.00412.13
5.4.350.0140.00012.25
5.4.340.0130.00012.52
5.4.330.0130.00012.36
5.4.320.0170.00012.40
5.4.310.0100.00312.19
5.4.300.0130.00012.50
5.4.290.0100.00312.18
5.4.280.0140.00012.19
5.4.270.0140.00012.43
5.4.260.0140.00012.19
5.4.250.0130.00012.44
5.4.240.0110.00412.44
5.4.230.0110.00312.06
5.4.220.0060.00612.01
5.4.210.0140.00012.32
5.4.200.0130.00311.94
5.4.190.0090.00512.00
5.4.180.0110.00412.26
5.4.170.0110.00212.34
5.4.160.0130.00012.21
5.4.150.0100.00312.00
5.4.140.0140.00012.36
5.4.130.0080.00412.39
5.4.120.0150.00212.49
5.4.110.0130.00012.26
5.4.100.0110.00212.57
5.4.90.0130.00012.27
5.4.80.0080.00512.36
5.4.70.0110.00412.31
5.4.60.0120.00012.45
5.4.50.0080.00412.34
5.4.40.0100.00312.50
5.4.30.0140.00012.57
5.4.20.0100.00312.48
5.4.10.0140.00012.47
5.4.00.0100.00312.44
5.3.290.0110.00312.96
5.3.280.0080.00412.82
5.3.270.0100.00312.84
5.3.260.0100.00312.90
5.3.250.0090.00412.83
5.3.240.0150.00012.50
5.3.230.0090.00412.84
5.3.220.0060.00812.55
5.3.210.0100.00312.53
5.3.200.0100.00312.78
5.3.190.0110.00312.81
5.3.180.0130.00012.79
5.3.170.0100.00312.75
5.3.160.0070.00712.79
5.3.150.0120.00412.77
5.3.140.0140.00012.62
5.3.130.0080.00812.96
5.3.120.0110.00212.63
5.3.110.0110.00312.89
5.3.100.0100.00312.71
5.3.90.0080.00413.02
5.3.80.0090.00312.58
5.3.70.0130.00012.87
5.3.60.0000.01212.66
5.3.50.0080.00812.56
5.3.40.0090.00512.63
5.3.30.0130.00012.55
5.3.20.0090.00312.60
5.3.10.0090.00312.59
5.3.00.0090.00312.56
5.2.170.0070.00311.84
5.2.160.0050.00511.90
5.2.150.0050.00511.63
5.2.140.0100.00011.60
5.2.130.0080.00311.62
5.2.120.0060.00611.82
5.2.110.0050.00511.84
5.2.100.0110.00011.88
5.2.90.0100.00011.80
5.2.80.0090.00211.77
5.2.70.0070.00511.81
5.2.60.0050.00711.70
5.2.50.0110.00011.83
5.2.40.0040.00711.55
5.2.30.0100.00011.56
5.2.20.0100.00011.34
5.2.10.0100.00011.55
5.2.00.0110.00011.29
5.1.60.0060.00310.88
5.1.50.0050.00510.66
5.1.40.0060.00311.03
5.1.30.0060.00310.99
5.1.20.0060.00310.97
5.1.10.0050.00510.67
5.1.00.0060.00310.82
5.0.50.0040.00410.14
5.0.40.0000.0089.95
5.0.30.0080.00010.02
5.0.20.0080.0009.95
5.0.10.0000.0079.95
5.0.00.0080.0009.95
4.4.90.0020.0029.95
4.4.80.0050.0009.95
4.4.70.0050.0009.95
4.4.60.0000.0049.95
4.4.50.0000.0059.95
4.4.40.0000.0069.95
4.4.30.0020.0029.95
4.4.20.0050.0009.95
4.4.10.0000.0049.95
4.4.00.0000.0049.95
4.3.110.0040.0009.95
4.3.100.0000.0049.95
4.3.90.0000.0059.95
4.3.80.0000.0059.95
4.3.70.0000.0059.95
4.3.60.0000.0059.95
4.3.50.0000.0059.95
4.3.40.0040.0009.95
4.3.30.0000.0049.95
4.3.20.0020.0029.95
4.3.10.0030.0009.95
4.3.00.0030.0009.95

preferences:
157.22 ms | 403 KiB | 5 Q