3v4l.org

run code in 300+ PHP versions simultaneously
<?php $p = '~(?J)(z?)((?1)(?P<group>b)|(?P<group>a))ba~'; // works //$p = '~(?J)(z?)((?1)(?P<group>b)|(?P<group>a))b(?P=group)~'; // fails $s = 'aba'; if (preg_match($p, $s, $m)) { var_dump($m); }

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)
8.3.40.0120.00318.80
8.3.30.0140.00718.93
8.3.20.0080.00020.41
8.3.10.0000.00823.45
8.3.00.0080.00319.50
8.2.170.0070.01022.96
8.2.160.0140.00320.52
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0060.01326.16
8.2.120.0040.00422.38
8.2.110.0030.00622.27
8.2.100.0080.00418.03
8.2.90.0030.00619.05
8.2.80.0030.00517.97
8.2.70.0000.00817.63
8.2.60.0040.00417.91
8.2.50.0090.00318.07
8.2.40.0060.00317.97
8.2.30.0060.00317.91
8.2.20.0050.00317.65
8.2.10.0000.00817.93
8.2.00.0030.00717.75
8.1.270.0040.00423.77
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00923.96
8.1.230.0080.00419.03
8.1.220.0000.00817.74
8.1.210.0090.00018.77
8.1.200.0000.01017.35
8.1.190.0060.00317.54
8.1.180.0060.00318.10
8.1.170.0000.00818.74
8.1.160.0000.00722.06
8.1.150.0040.00418.61
8.1.140.0070.00017.44
8.1.130.0040.00417.86
8.1.120.0000.00717.55
8.1.110.0000.00717.50
8.1.100.0040.00417.52
8.1.90.0070.00017.55
8.1.80.0000.00717.55
8.1.70.0000.00717.43
8.1.60.0050.00217.55
8.1.50.0040.00417.59
8.1.40.0050.00217.49
8.1.30.0080.00017.67
8.1.20.0050.00317.68
8.1.10.0040.00417.69
8.1.00.0000.00717.61
8.0.300.0070.00018.77
8.0.290.0000.00717.05
8.0.280.0030.00318.45
8.0.270.0000.00717.22
8.0.260.0000.00617.26
8.0.250.0000.00717.04
8.0.240.0030.00616.95
8.0.230.0070.00017.04
8.0.220.0030.00317.02
8.0.210.0000.00717.03
8.0.200.0030.00317.05
8.0.190.0050.00216.91
8.0.180.0040.00417.00
8.0.170.0000.00816.90
8.0.160.0050.00317.00
8.0.150.0000.00816.88
8.0.140.0030.00516.79
8.0.130.0000.00813.43
8.0.120.0040.00416.94
8.0.110.0050.00316.88
8.0.100.0060.00317.03
8.0.90.0050.00216.99
8.0.80.0120.00316.98
8.0.70.0040.00416.84
8.0.60.0070.00017.00
8.0.50.0030.00316.86
8.0.30.0080.01117.17
8.0.20.0120.01217.40
8.0.10.0050.00317.07
8.0.00.0090.00816.98
7.4.330.0030.00315.00
7.4.320.0030.00316.57
7.4.300.0030.00316.77
7.4.290.0000.00716.75
7.4.280.0040.00416.71
7.4.270.0070.00016.73
7.4.260.0000.00816.68
7.4.250.0000.00816.72
7.4.240.0040.00416.55
7.4.230.0030.00316.66
7.4.220.0100.00716.75
7.4.210.0090.00516.77
7.4.200.0000.00816.91
7.4.190.0030.00316.71
7.4.160.0100.00716.61
7.4.150.0140.00317.40
7.4.140.0060.01117.86
7.4.130.0030.01416.59
7.4.120.0110.00616.68
7.4.110.0110.01116.75
7.4.100.0090.01216.68
7.4.90.0170.00316.58
7.4.80.0060.01519.39
7.4.70.0030.01216.61
7.4.60.0040.01216.60
7.4.50.0060.00316.50
7.4.40.0070.00522.77
7.4.30.0100.00616.57
7.4.10.0030.01615.10
7.4.00.0050.01215.14
7.3.330.0030.00313.13
7.3.320.0050.00013.17
7.3.310.0040.00416.25
7.3.300.0040.00416.24
7.3.290.0080.00816.30
7.3.280.0070.01116.34
7.3.270.0140.00317.40
7.3.260.0100.01416.52
7.3.250.0140.00716.44
7.3.240.0100.01316.28
7.3.230.0050.01116.54
7.3.210.0120.00416.48
7.3.200.0030.01619.39
7.3.190.0030.01516.54
7.3.180.0070.00716.20
7.3.170.0100.00716.42
7.3.160.0080.00816.40
7.3.130.0070.01015.05
7.3.120.0090.00914.69
7.3.110.0110.00715.09
7.3.100.0060.00914.82
7.3.90.0060.00614.89
7.3.80.0000.01415.14
7.3.70.0090.00615.03
7.3.60.0060.00914.57
7.3.50.0060.00314.94
7.3.40.0040.00814.93
7.3.30.0040.00414.88
7.3.20.0070.00716.75
7.3.10.0060.00716.71
7.3.00.0060.00716.80
7.2.330.0080.01516.69
7.2.320.0090.00916.45
7.2.310.0030.01416.64
7.2.300.0140.00316.64
7.2.290.0030.01316.57
7.2.260.0030.01214.76
7.2.250.0100.01014.93
7.2.240.0070.01014.95
7.2.230.0030.01014.80
7.2.220.0070.01114.95
7.2.210.0040.01114.98
7.2.200.0070.00714.82
7.2.190.0090.00615.00
7.2.180.0000.01315.04
7.2.170.0120.00315.08
7.2.160.0060.00314.98
7.2.150.0030.01016.92
7.2.140.0080.00817.01
7.2.130.0050.00916.93
7.2.120.0050.00816.91
7.2.110.0070.00816.88
7.2.100.0050.00816.90
7.2.90.0060.00616.71
7.2.80.0060.00717.02
7.2.70.0030.01016.91
7.2.60.0080.00416.79
7.2.50.0030.00716.85
7.2.40.0040.01216.81
7.2.30.0040.00916.91
7.2.20.0070.01016.90
7.2.10.0020.01216.91
7.2.00.0070.00717.72
7.1.330.0100.00315.96
7.1.320.0000.01615.86
7.1.310.0090.00615.64
7.1.300.0090.00615.78
7.1.290.0080.00415.90
7.1.280.0100.00315.85
7.1.270.0090.00615.94
7.1.260.0000.01115.84
7.1.250.0030.01015.94
7.1.240.0020.00816.09
7.1.230.0030.01515.86
7.1.220.0080.00515.96
7.1.210.0060.01315.91
7.1.200.0100.00515.86
7.1.190.0060.00915.79
7.1.180.0070.00716.09
7.1.170.0040.00816.09
7.1.160.0040.01616.06
7.1.150.0000.00815.94
7.1.140.0000.01116.04
7.1.130.0000.01215.93
7.1.120.0030.00516.00
7.1.110.0080.00815.88
7.1.100.0090.01317.04
7.1.90.0100.00716.03
7.1.80.0040.00815.67
7.1.70.0030.00716.60
7.1.60.0080.00516.51
7.1.50.0090.01116.21
7.1.40.0040.01115.77
7.1.30.0100.00315.94
7.1.20.0080.00415.88
7.1.10.0110.00015.89
7.1.00.0050.04219.27
7.0.330.0100.00315.44
7.0.320.0030.00915.45
7.0.310.0070.01015.41
7.0.300.0100.00315.44
7.0.290.0030.01215.48
7.0.280.0090.00615.75
7.0.270.0080.00415.29
7.0.260.0070.00715.36
7.0.250.0030.01315.54
7.0.240.0100.00615.66
7.0.230.0040.00415.55
7.0.220.0000.01015.40
7.0.210.0000.01215.54
7.0.200.0050.01216.03
7.0.190.0110.00415.63
7.0.180.0070.00315.45
7.0.170.0040.00715.25
7.0.160.0030.01015.33
7.0.150.0060.00615.50
7.0.140.0080.03718.84
7.0.130.0090.00315.56
7.0.120.0140.00015.59
7.0.110.0030.01015.63
7.0.100.0130.00015.63
7.0.90.0030.01015.43
7.0.80.0040.00815.12
7.0.70.0090.00315.28
7.0.60.0050.04517.75
7.0.50.0050.04516.73
7.0.40.0030.03516.82
7.0.30.0240.03817.03
7.0.20.0170.03516.69
7.0.10.0070.04216.93
7.0.00.0050.05216.85
5.6.400.0000.01114.32
5.6.390.0000.01414.61
5.6.380.0080.00614.14
5.6.370.0090.00914.44
5.6.360.0130.00313.93
5.6.350.0030.01014.04
5.6.340.0040.01114.63
5.6.330.0030.00614.56
5.6.320.0030.00714.38
5.6.310.0070.00314.04
5.6.300.0060.00914.61
5.6.290.0070.00714.23
5.6.280.0080.04817.59
5.6.270.0030.01014.45
5.6.260.0100.00314.05
5.6.250.0030.00914.02
5.6.240.0070.00714.22
5.6.230.0030.01014.30
5.6.220.0130.00314.40
5.6.210.0050.03317.46
5.6.200.0100.02016.31
5.6.190.0100.04217.41
5.6.180.0160.03817.55
5.6.170.0100.05017.39
5.6.160.0110.03317.41
5.6.150.0100.04016.14
5.6.140.0060.04516.20
5.6.130.0070.03616.22
5.6.120.0070.04417.93
5.6.110.0060.02117.72
5.6.100.0080.02317.70
5.6.90.0080.04317.59
5.6.80.0050.02317.34
5.6.70.2230.02217.41
5.6.60.0110.00414.46
5.6.50.0070.00414.00
5.6.40.0120.00314.42
5.6.30.0000.01814.20
5.6.20.0110.00414.19
5.6.10.0100.00714.40
5.6.00.0100.00314.16
5.5.380.0000.01014.52
5.5.370.0030.00514.36
5.5.360.0000.01414.50
5.5.350.0110.04417.42
5.5.340.0030.04616.05
5.5.330.0080.03817.10
5.5.320.0110.03917.12
5.5.310.0140.02717.38
5.5.300.0050.02215.92
5.5.290.0090.03216.10
5.5.280.0080.04217.50
5.5.270.0030.02317.54
5.5.260.0050.04317.54
5.5.250.0060.03117.31
5.5.240.0090.01917.25
5.5.230.0100.00314.11
5.5.220.0030.01014.26
5.5.210.0030.01014.12
5.5.200.0000.01914.04
5.5.190.0080.00414.07
5.5.180.0110.00314.26
5.5.170.0000.01414.23
5.5.160.0070.00714.05
5.5.150.0040.00713.92
5.5.140.0070.00713.72
5.5.130.0060.00314.27
5.5.120.0100.00314.00
5.5.110.0070.00714.05
5.5.100.0120.00314.11
5.5.90.0060.00313.97
5.5.80.0070.00714.18
5.5.70.0120.00614.37
5.5.60.0030.01014.19
5.5.50.0060.01014.19
5.5.40.0030.00913.94
5.5.30.0030.01014.12
5.5.20.0070.00714.13
5.5.10.0030.01013.82
5.5.00.0060.01013.81
5.4.450.0390.03016.24
5.4.440.0220.02416.19
5.4.430.0160.02816.19
5.4.420.0120.04116.19
5.4.410.0180.03016.19
5.4.400.0180.03515.95
5.4.390.0050.03315.86
5.4.380.0150.03015.70
5.4.370.0200.04015.77
5.4.360.0230.03215.76
5.4.350.0120.03115.70
5.4.340.0080.03115.81
5.4.330.0030.00512.90
5.4.320.0050.02812.68
5.4.310.0070.02812.68
5.4.300.0060.01912.68
5.4.290.0020.02612.68
5.4.280.0040.02512.62
5.4.270.0070.02212.61
5.4.260.0060.02412.61
5.4.250.0040.02412.62
5.4.240.0080.02112.61
5.4.230.0070.02212.61
5.4.220.0040.02512.61
5.4.210.0060.02812.61
5.4.200.0080.02312.61
5.4.190.0050.02412.61
5.4.180.0050.02412.61
5.4.170.0080.02112.61
5.4.160.0080.02712.61
5.4.150.0070.02312.61
5.4.140.0080.02912.45
5.4.130.0100.02412.45
5.4.120.0090.03212.42
5.4.110.0070.02912.42
5.4.100.0090.02612.42
5.4.90.0070.02812.42
5.4.80.0070.03012.42
5.4.70.0090.02312.42
5.4.60.0110.02712.42
5.4.50.0090.02612.42
5.4.40.0100.02512.42
5.4.30.0100.02512.42
5.4.20.0090.03312.41
5.4.10.0040.02912.42
5.4.00.0080.02712.16
5.3.290.0050.02412.85
5.3.280.0060.03112.80
5.3.270.0050.03112.81
5.3.260.0040.03312.81
5.3.250.0060.02412.81
5.3.240.0060.02212.81
5.3.230.0070.02412.81
5.3.220.0050.02112.79
5.3.210.0070.02012.79
5.3.200.0060.02312.79
5.3.190.0070.02312.79
5.3.180.0080.02712.79
5.3.170.0050.02312.79
5.3.160.0090.02112.79
5.3.150.0020.02612.79
5.3.140.0080.03112.78
5.3.130.0060.03212.78
5.3.120.0050.02512.78
5.3.110.0080.03112.78
5.3.100.0070.02812.51
5.3.90.0050.03112.49
5.3.80.0080.02712.49
5.3.70.0050.03612.49
5.3.60.0090.04712.48
5.3.50.0090.02612.45
5.3.40.0040.02612.45
5.3.30.0060.02112.42
5.3.20.0060.02012.31
5.3.10.0060.02912.29
5.3.00.0060.02912.29
5.2.170.0040.0469.16
5.2.160.0110.0369.16
5.2.150.0130.0369.16
5.2.140.0090.0379.15
5.2.130.0040.0389.12
5.2.120.0150.0339.12
5.2.110.0080.0389.13
5.2.100.0110.0359.13
5.2.90.0070.0399.13
5.2.80.0080.0409.13
5.2.70.0060.0309.12
5.2.60.0070.0299.07
5.2.50.0030.0349.05
5.2.40.0030.0329.02
5.2.30.0060.0309.00
5.2.20.0040.0328.99
5.2.10.0070.0298.90
5.2.00.0040.0328.76
5.1.60.0080.0258.04
5.1.50.0070.0238.04
5.1.40.0040.0278.02
5.1.30.0030.0298.37
5.1.20.0110.0358.40
5.1.10.0100.0268.12
5.1.00.0110.0348.12
5.0.50.0070.0276.59
5.0.40.0120.0216.45
5.0.30.0070.0396.27
5.0.20.0040.0206.24
5.0.10.0040.0206.21
5.0.00.0050.0386.20
4.4.90.0040.0174.78
4.4.80.0040.0154.75
4.4.70.0050.0144.76
4.4.60.0040.0204.76
4.4.50.0050.0224.77
4.4.40.0070.0314.71
4.4.30.0040.0144.76
4.4.20.0050.0164.84
4.4.10.0040.0154.85
4.4.00.0010.0284.75
4.3.110.0040.0154.67
4.3.100.0010.0174.67
4.3.90.0030.0154.63
4.3.80.0040.0244.58
4.3.70.0020.0164.63
4.3.60.0050.0124.63
4.3.50.0010.0184.63
4.3.40.0020.0254.54
4.3.30.0020.0163.27
4.3.20.0040.0153.25
4.3.10.0020.0163.21
4.3.00.0370.03010.30

preferences:
42.48 ms | 400 KiB | 5 Q