3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(preg_match($r = '{(?:\\{(?R)\\}|o{2,4})+}', 'foo{oo{{oo}ooo}}oo bar', $m), $m); echo "$r\n";

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)
8.3.60.0120.00616.75
8.3.50.0060.01422.95
8.3.40.0070.00718.94
8.3.30.0140.00019.22
8.3.20.0040.00420.29
8.3.10.0000.00823.48
8.3.00.0040.00419.27
8.2.180.0110.00418.67
8.2.170.0150.00022.96
8.2.160.0030.01320.51
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0080.00019.04
8.2.110.0040.00420.35
8.2.100.0040.00718.09
8.2.90.0050.00319.22
8.2.80.0040.00417.97
8.2.70.0000.00817.63
8.2.60.0060.00317.93
8.2.50.0040.00418.07
8.2.40.0030.00518.22
8.2.30.0040.00418.00
8.2.20.0090.00017.70
8.2.10.0040.00418.19
8.2.00.0060.00317.70
8.1.280.0170.00325.92
8.1.270.0030.00724.01
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0030.00623.88
8.1.230.0110.00019.00
8.1.220.0080.00017.79
8.1.210.0050.00318.77
8.1.200.0000.00917.48
8.1.190.0050.00317.22
8.1.180.0030.00518.97
8.1.170.0000.00818.70
8.1.160.0040.00421.98
8.1.150.0040.00418.80
8.1.140.0040.00417.53
8.1.130.0070.00017.80
8.1.120.0000.00717.45
8.1.110.0000.00817.61
8.1.100.0000.00717.49
8.1.90.0000.00817.50
8.1.80.0030.00617.42
8.1.70.0070.00017.46
8.1.60.0030.00617.68
8.1.50.0030.00517.63
8.1.40.0000.00717.66
8.1.30.0000.00817.71
8.1.20.0050.00317.68
8.1.10.0060.00317.52
8.1.00.0040.00417.54
8.0.300.0040.00418.77
8.0.290.0040.00416.88
8.0.280.0000.00818.46
8.0.270.0070.00017.27
8.0.260.0000.00717.25
8.0.250.0030.00317.16
8.0.240.0000.00817.11
8.0.230.0070.00017.11
8.0.220.0000.00717.00
8.0.210.0000.00716.91
8.0.200.0000.00717.08
8.0.190.0040.00417.16
8.0.180.0000.00717.11
8.0.170.0000.00817.05
8.0.160.0000.00816.95
8.0.150.0070.00017.00
8.0.140.0000.00816.98
8.0.130.0050.00013.47
8.0.120.0000.00816.93
8.0.110.0000.00717.05
8.0.100.0040.00416.91
8.0.90.0000.00716.90
8.0.80.0130.01016.99
8.0.70.0040.00416.83
8.0.60.0070.00016.86
8.0.50.0080.00017.07
8.0.30.0060.01317.28
8.0.20.0110.01017.42
8.0.10.0040.00416.93
8.0.00.0100.01316.88
7.4.330.0060.00015.14
7.4.320.0000.00616.66
7.4.300.0030.00316.62
7.4.290.0000.00716.65
7.4.280.0000.00716.68
7.4.270.0030.00316.66
7.4.260.0000.00716.71
7.4.250.0000.00716.71
7.4.240.0030.00316.71
7.4.230.0040.00416.54
7.4.220.0110.00816.69
7.4.210.0060.01216.54
7.4.200.0030.00516.72
7.4.160.0100.00716.63
7.4.150.0070.01117.40
7.4.140.0120.01217.86
7.4.130.0120.00916.76
7.4.120.0070.00916.56
7.4.110.0070.01016.73
7.4.100.0070.01116.48
7.4.90.0120.00616.70
7.4.80.0140.01119.39
7.4.70.0130.00816.90
7.4.60.0100.00716.51
7.4.50.0000.00816.67
7.4.40.0120.00916.61
7.4.30.0110.00716.40
7.4.00.0100.00715.11
7.3.330.0050.00013.25
7.3.320.0000.00613.18
7.3.310.0030.00316.43
7.3.300.0040.00416.35
7.3.290.0090.00616.33
7.3.280.0060.01116.33
7.3.270.0130.00717.40
7.3.260.0130.00716.75
7.3.250.0110.00916.47
7.3.240.0100.00616.51
7.3.230.0100.00716.65
7.3.210.0060.01216.63
7.3.200.0140.00316.43
7.3.190.0120.00616.45
7.3.180.0080.00816.42
7.3.170.0140.00316.48
7.3.160.0100.00716.79
7.3.10.0070.01016.43
7.3.00.0110.00716.48
7.2.330.0120.00616.70
7.2.320.0090.00916.64
7.2.310.0150.00316.63
7.2.300.0060.01116.69
7.2.290.0070.01116.72
7.2.130.0080.01116.95
7.2.120.0160.00716.77
7.2.110.0140.00616.36
7.2.100.0160.00016.93
7.2.90.0110.01116.44
7.2.80.0130.00316.55
7.2.70.0070.01017.06
7.2.60.0080.00716.84
7.2.50.0100.01016.69
7.2.40.0080.01216.57
7.2.30.0100.00716.45
7.2.20.0190.00316.67
7.2.10.0210.00716.46
7.2.00.0050.01218.12
7.1.250.0150.00415.47
7.1.200.0080.00415.93
7.1.100.0000.01018.38
7.1.70.0040.00417.13
7.1.60.0110.01519.46
7.1.50.0130.00717.25
7.1.00.0100.07022.42
7.0.200.0000.01116.96
7.0.140.0030.09322.08
7.0.60.0030.09019.86
7.0.50.0030.04317.81
7.0.40.0070.08720.21
7.0.30.0200.05319.99
7.0.20.0230.07720.13
7.0.10.0000.07720.02
7.0.00.0130.08720.22
5.6.210.0070.04720.64
5.6.200.0070.03718.20
5.6.190.0030.08320.41
5.6.180.0270.08020.56
5.6.170.0200.03720.48
5.6.160.0230.06020.38
5.6.150.0130.04018.22
5.6.140.0030.08018.22
5.6.130.0100.07318.12
5.6.120.0170.07321.14
5.6.110.0130.08020.97
5.6.100.0030.09021.10
5.6.90.0100.04721.07
5.6.80.0070.07320.53
5.6.70.4300.04320.43
5.5.350.0100.08020.34
5.5.340.0100.03718.02
5.5.330.0000.05020.21
5.5.320.0100.03320.32
5.5.310.0130.08020.32
5.5.300.0000.05018.00
5.5.290.0000.04317.99
5.5.280.0130.04320.86
5.5.270.0230.04720.75
5.5.260.0030.08720.88
5.5.250.0000.04320.78
5.5.240.0270.06020.14
5.4.450.0270.04319.26
5.4.440.0870.03719.54
5.4.430.0470.03319.48
5.4.420.0470.04319.54
5.4.410.0370.04019.13
5.4.400.0330.04018.92
5.4.390.1170.05019.09
5.4.380.0330.05718.71
5.4.370.0470.04718.68
5.4.360.0600.06718.64
5.4.350.0500.05318.64
5.4.340.0500.04718.68
5.4.320.0100.03412.46
5.4.310.0060.03912.45
5.4.300.0080.03512.45
5.4.290.0060.04112.45
5.4.280.0080.03312.34
5.4.270.0070.03712.35
5.4.260.0070.04312.35
5.4.250.0050.04112.34
5.4.240.0050.03912.34
5.4.230.0080.04012.34
5.4.220.0050.04012.34
5.4.210.0070.03512.34
5.4.200.0060.03712.34
5.4.190.0130.02912.33
5.4.180.0050.03812.34
5.4.170.0050.03712.34
5.4.160.0060.03712.34
5.4.150.0070.04512.34
5.4.140.0070.03612.02
5.4.130.0060.04412.01
5.4.120.0030.03711.96
5.4.110.0070.03511.96
5.4.100.0060.03511.96
5.4.90.0080.03411.96
5.4.80.0090.03411.96
5.4.70.0030.03811.96
5.4.60.0080.03411.96
5.4.50.0050.04211.96
5.4.40.0070.03311.95
5.4.30.0090.03311.94
5.4.20.0060.03511.95
5.4.10.0060.03411.95
5.4.00.0090.03211.43
5.3.290.0050.03912.80
5.3.280.0070.03612.71
5.3.270.0050.04112.72
5.3.260.0070.03812.72
5.3.250.0040.03912.72
5.3.240.0080.03512.71
5.3.230.0090.03512.71
5.3.220.0040.04012.68
5.3.210.0050.04012.68
5.3.200.0070.03512.68
5.3.190.0060.03712.68
5.3.180.0060.03712.68
5.3.170.0120.04312.67
5.3.160.0060.03812.67
5.3.150.0070.03612.67
5.3.140.0040.03812.66
5.3.130.0100.03412.65
5.3.120.0080.03712.66
5.3.110.0040.04112.66
5.3.100.0070.04012.12
5.3.90.0100.03312.08
5.3.80.0070.03512.07
5.3.70.0090.03312.07
5.3.60.0070.03612.07
5.3.50.0060.03612.00
5.3.40.0080.03512.00
5.3.30.0060.03511.95
5.3.20.0060.03611.74
5.3.10.0070.03611.70
5.3.00.0060.03811.68
5.2.170.0060.0359.19
5.2.160.0040.0299.19
5.2.150.0050.0309.19
5.2.140.0060.0379.18
5.2.130.0030.0319.14
5.2.120.0050.0289.14
5.2.110.0100.0249.16
5.2.100.0050.0289.15
5.2.90.0040.0299.15
5.2.80.0060.0299.15
5.2.70.0060.0299.14
5.2.60.0060.0289.09
5.2.50.0050.0309.07
5.2.40.0040.0299.05
5.2.30.0050.0309.04
5.2.20.0070.0269.02
5.2.10.0060.0298.93
5.2.00.0070.0268.79
5.1.60.0060.0228.07
5.1.50.0030.0258.07
5.1.40.0040.0248.05
5.1.30.0030.0278.40
5.1.20.0050.0268.43
5.1.10.0060.0248.16
5.1.00.0030.0268.15
5.0.50.0060.0176.63
5.0.40.0050.0176.48
5.0.30.0030.0316.30
5.0.20.0030.0206.27
5.0.10.0040.0196.25
5.0.00.0040.0306.24
4.4.90.0030.0164.77
4.4.80.0020.0174.75
4.4.70.0020.0164.75
4.4.60.0020.0164.75
4.4.50.0030.0154.77
4.4.40.0040.0304.70
4.4.30.0030.0154.76
4.4.20.0030.0154.84
4.4.10.0040.0144.85
4.4.00.0060.0214.76
4.3.110.0020.0174.66
4.3.100.0030.0144.67
4.3.90.0020.0154.64
4.3.80.0040.0234.58
4.3.70.0040.0134.63
4.3.60.0030.0144.63
4.3.50.0040.0154.62
4.3.40.0030.0244.54
4.3.30.0030.0153.30
4.3.20.0030.0153.27
4.3.10.0020.0163.23
4.3.00.0030.01714.87

preferences:
97.35 ms | 401 KiB | 5 Q