3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match('/b(?<a>a)?/', 'xxxxbxxxx', $matches); var_dump($matches); var_dump(array_has_key('a', $matches));

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)
8.3.60.0110.00718.31
8.3.50.0110.00821.14
8.3.40.0120.00318.93
8.3.30.0030.01020.34
8.3.20.0040.00420.25
8.3.10.0070.00022.08
8.3.00.0050.00222.50
8.2.180.0100.01016.88
8.2.170.0150.00922.96
8.2.160.0090.00620.57
8.2.150.0040.00424.18
8.2.140.0090.00924.66
8.2.130.0000.00826.16
8.2.120.0040.00419.66
8.2.110.0060.00320.41
8.2.100.0090.00317.91
8.2.90.0080.00017.75
8.2.80.0040.00418.88
8.2.70.0080.00017.88
8.2.60.0040.00417.88
8.2.50.0080.00017.80
8.2.40.0040.00419.66
8.2.30.0030.00619.27
8.2.20.0040.00417.71
8.2.10.0040.00417.75
8.2.00.0000.00717.73
8.1.280.0090.00625.92
8.1.270.0050.00320.43
8.1.260.0000.00726.35
8.1.250.0050.00328.09
8.1.240.0030.00623.73
8.1.230.0080.00420.92
8.1.220.0000.00818.55
8.1.210.0050.00318.77
8.1.200.0000.00917.22
8.1.190.0040.00419.14
8.1.180.0000.01018.10
8.1.170.0080.00017.62
8.1.160.0050.00221.89
8.1.150.0030.00518.59
8.1.140.0040.00417.55
8.1.130.0000.00717.80
8.1.120.0040.00417.52
8.1.110.0040.00417.31
8.1.100.0080.00017.35
8.1.90.0000.00717.50
8.1.80.0000.00717.48
8.1.70.0060.00017.48
8.1.60.0000.00717.54
8.1.50.0000.00717.65
8.1.40.0080.00017.58
8.1.30.0040.00417.76
8.1.20.0000.00817.74
8.1.10.0040.00417.71
8.1.00.0030.00517.60
8.0.300.0040.00418.77
8.0.290.0000.00816.88
8.0.280.0080.00018.36
8.0.270.0000.00717.21
8.0.260.0030.00317.03
8.0.250.0030.00317.10
8.0.240.0000.00717.10
8.0.230.0030.00317.16
8.0.220.0050.00217.08
8.0.210.0000.00816.94
8.0.200.0000.00717.11
8.0.190.0060.00316.99
8.0.180.0040.00416.93
8.0.170.0000.00817.05
8.0.160.0030.00517.14
8.0.150.0030.00517.01
8.0.140.0040.00717.05
8.0.130.0070.00013.50
8.0.120.0000.00816.96
8.0.110.0040.00417.03
8.0.100.0000.00716.92
8.0.90.0000.00817.05
8.0.80.0080.00716.95
8.0.70.0050.00217.11
8.0.60.0000.00716.86
8.0.50.0020.00517.08
8.0.30.0080.01017.13
8.0.20.0120.01017.42
8.0.10.0040.00417.17
8.0.00.0090.00916.78
7.4.330.0020.00215.00
7.4.320.0000.00616.50
7.4.300.0000.00616.57
7.4.290.0070.00016.64
7.4.280.0030.00316.55
7.4.270.0070.00016.66
7.4.260.0030.00316.70
7.4.250.0000.00716.74
7.4.240.0060.00116.58
7.4.230.0000.00816.66
7.4.220.0130.01316.67
7.4.210.0070.00716.68
7.4.200.0030.00316.75
7.4.190.0040.00416.80
7.4.160.0180.00616.61
7.4.150.0130.00317.40
7.4.140.0080.01117.86
7.4.130.0110.00516.58
7.4.120.0070.01016.73
7.4.110.0130.00316.57
7.4.100.0100.00716.56
7.4.90.0120.00616.80
7.4.80.0130.00719.39
7.4.70.0180.00016.89
7.4.60.0160.00316.47
7.4.50.0000.00416.71
7.4.40.0100.00222.77
7.4.30.0080.00816.70
7.4.00.0080.00814.90
7.3.330.0030.00313.32
7.3.320.0000.00513.24
7.3.310.0000.00816.49
7.3.300.0000.00716.40
7.3.290.0110.00416.47
7.3.280.0070.00916.40
7.3.270.0050.01617.40
7.3.260.0140.00316.50
7.3.250.0080.00916.56
7.3.240.0130.00616.48
7.3.230.0040.01216.39
7.3.210.0060.01216.68
7.3.200.0090.00919.39
7.3.190.0110.00616.88
7.3.180.0080.00816.31
7.3.170.0060.01016.50
7.3.160.0080.00816.48
7.3.120.0030.00914.89
7.2.330.0070.01016.57
7.2.320.0130.00316.51
7.2.310.0060.01116.80
7.2.300.0040.01116.72
7.2.290.0060.01216.54
7.2.110.0420.00316.82
7.2.80.0060.00616.67
7.2.60.0040.00416.73
7.2.00.0060.00919.68
7.1.200.0060.00616.01
7.1.100.0220.00717.83
7.1.70.0060.00617.23
7.1.60.0100.01019.50
7.1.50.0070.01417.22
7.1.00.0030.04022.30
7.0.200.0000.00716.95
7.0.140.0070.07022.07
7.0.60.0000.05319.82
7.0.50.0100.06017.78
7.0.40.0030.04320.42
7.0.30.0230.03720.32
7.0.20.0270.07720.31
7.0.10.0170.07720.11
7.0.00.0130.08020.20
5.6.280.0070.06720.78
5.6.210.0130.07320.67
5.6.200.0070.06718.21
5.6.190.0030.04720.59
5.6.180.0270.06020.60
5.6.170.0370.07720.41
5.6.160.0030.08720.73
5.6.150.0100.07718.21
5.6.140.0030.08018.21
5.6.130.0030.04318.14
5.6.120.0170.07020.82
5.6.110.0170.08020.97
5.6.100.0070.08721.12
5.6.90.0100.07720.87
5.6.80.0000.04320.37
5.5.350.0230.07320.47
5.5.340.0200.07017.91
5.5.330.0100.06320.37
5.5.320.0400.07320.18
5.5.310.0270.07320.18
5.5.300.0070.07017.91
5.5.290.0030.04717.90
5.5.280.0030.04020.79
5.5.270.0070.08320.82
5.5.260.0100.08320.75
5.5.250.0070.06020.66
5.5.240.0130.07020.18
5.4.450.0330.04319.46
5.4.440.0700.04019.37
5.4.430.0400.04019.45
5.4.420.0130.05019.15
5.4.410.0200.05319.35
5.4.400.0030.05718.86
5.4.390.0100.05719.16
5.4.380.0130.07019.16
5.4.370.0030.06019.05
5.4.360.0100.06019.05
5.4.350.0040.04311.97
5.4.340.0130.06611.96
5.4.320.0060.03712.45
5.4.310.0090.03812.45
5.4.300.0080.03512.45
5.4.290.0090.04612.45
5.4.280.0040.03712.35
5.4.270.0060.03712.35
5.4.260.0030.03912.34
5.4.250.0000.06018.80
5.4.240.0100.05318.88
5.4.230.0100.04718.74
5.4.220.0070.05718.64
5.4.210.0100.04718.70
5.4.200.0100.04719.03
5.4.190.0030.05718.91
5.4.180.0100.04718.89
5.4.170.0130.04718.71
5.4.160.0070.06018.86
5.4.150.0130.06718.98
5.4.140.0000.05716.30
5.4.130.0030.05016.30
5.4.120.0100.06316.23
5.4.110.0100.06016.41
5.4.100.0030.05016.49
5.4.90.0100.04316.29
5.4.80.0170.04316.27
5.4.70.0100.04716.40
5.4.60.0130.04316.25
5.4.50.0070.05016.33
5.4.40.0000.05316.53
5.4.30.0070.04716.16
5.4.20.0000.06016.16
5.4.10.0000.05716.47
5.4.00.0100.04315.88
5.3.290.0080.03912.80
5.3.280.0030.05314.45
5.3.270.0030.06014.45
5.3.260.0130.06014.60
5.3.250.0030.07314.30
5.3.240.0100.05014.75
5.3.230.0030.05714.61
5.3.220.0070.07014.42
5.3.210.0130.05314.56
5.3.200.0200.03314.58
5.3.190.0130.04714.43
5.3.180.0100.04314.71
5.3.170.0030.05314.57
5.3.160.0070.05014.57
5.3.150.0000.06314.56
5.3.140.0170.03714.70
5.3.130.0100.05014.55
5.3.120.0070.05314.59
5.3.110.0070.05314.46
5.3.100.0130.04714.18
5.3.90.0070.05013.86
5.3.80.0070.05013.90
5.3.70.0130.04314.01
5.3.60.0100.04713.86
5.3.50.0100.04714.09
5.3.40.0030.05313.89
5.3.30.0070.04713.79
5.3.20.0000.05313.52
5.3.10.0030.05013.50
5.3.00.0030.05313.35
5.2.170.0100.03711.16
5.2.160.0000.04711.14
5.2.150.0070.04011.14
5.2.140.0030.04311.15
5.2.130.0030.04311.20
5.2.120.0030.04011.20
5.2.110.0000.04711.19
5.2.100.0030.04011.11
5.2.90.0070.03711.10
5.2.80.0030.04311.20
5.2.70.0070.04310.92
5.2.60.0100.04011.14
5.2.50.0000.04710.86
5.2.40.0030.04011.02
5.2.30.0070.04010.91
5.2.20.0030.04010.97
5.2.10.0030.04010.76
5.2.00.0030.04710.87
5.1.60.0030.05010.08
5.1.50.0030.0339.91
5.1.40.0070.03010.12
5.1.30.0100.03010.24
5.1.20.0070.05310.56
5.1.10.0000.0409.98
5.1.00.0030.03710.02
5.0.50.0070.0238.69
5.0.40.0030.0278.32
5.0.30.0070.0408.16
5.0.20.0030.0278.11
5.0.10.0100.0338.21
5.0.00.0100.0338.20
4.4.90.0100.0207.32
4.4.80.0030.0207.32
4.4.70.0000.0337.32
4.4.60.0000.0307.32
4.4.50.0030.0307.32
4.4.40.0000.0377.32
4.4.30.0070.0177.32
4.4.20.0000.0237.32
4.4.10.0030.0207.32
4.4.00.0030.0307.32
4.3.110.0100.0207.32
4.3.100.0030.0207.32
4.3.90.0030.0207.32
4.3.80.0000.0337.32
4.3.70.0130.0207.32
4.3.60.0030.0207.32
4.3.50.0070.0177.32
4.3.40.0030.0307.32
4.3.30.0000.0237.32
4.3.20.0000.0237.32
4.3.10.0070.0177.32
4.3.00.0000.01714.52

preferences:
43.7 ms | 401 KiB | 5 Q