3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match('/(?:\D+|<\d+>)*[!?]/', 'foobar foobar foobar'); if (preg_last_error() == PREG_BACKTRACK_LIMIT_ERROR) { print 'Backtrack limit was exhausted!'; } ?>

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)
8.3.40.0030.01418.96
8.3.30.0070.01019.22
8.3.20.0060.00320.34
8.3.10.0030.00623.66
8.3.00.0060.00317.91
8.2.170.0040.01522.96
8.2.160.0070.01020.43
8.2.150.0030.00624.18
8.2.140.0050.00524.66
8.2.130.0060.00326.16
8.2.120.0030.00621.15
8.2.110.0070.00322.39
8.2.100.0090.00618.22
8.2.90.0000.01119.17
8.2.80.0070.00317.97
8.2.70.0000.01017.63
8.2.60.0080.00317.55
8.2.50.0030.00918.07
8.2.40.0040.00720.20
8.2.30.0030.01118.19
8.2.20.0040.00717.75
8.2.10.0000.01119.82
8.2.00.0070.00317.82
8.1.270.0120.01224.05
8.1.260.0030.00626.35
8.1.250.0040.00428.09
8.1.240.0110.00023.61
8.1.230.0060.00619.09
8.1.220.0030.00717.74
8.1.210.0070.00418.77
8.1.200.0040.00717.47
8.1.190.0060.00617.35
8.1.180.0070.00318.10
8.1.170.0090.00318.71
8.1.160.0000.01022.13
8.1.150.0000.01018.89
8.1.140.0030.00717.59
8.1.130.0030.00717.83
8.1.120.0000.01017.54
8.1.110.0000.01017.44
8.1.100.0000.01017.54
8.1.90.0000.00917.39
8.1.80.0030.00717.51
8.1.70.0000.01017.36
8.1.60.0000.01117.67
8.1.50.0070.00417.52
8.1.40.0000.01017.50
8.1.30.0000.01117.56
8.1.20.0070.00417.73
8.1.10.0070.00317.50
8.1.00.0000.01017.56
8.0.300.0030.00718.77
8.0.290.0000.01016.59
8.0.280.0030.00618.31
8.0.270.0030.00617.27
8.0.260.0030.00617.11
8.0.250.0030.00616.86
8.0.240.0000.01016.94
8.0.230.0000.00917.04
8.0.220.0000.00917.03
8.0.210.0100.00316.93
8.0.200.0060.00316.98
8.0.190.0040.00716.94
8.0.180.0070.00416.85
8.0.170.0000.01016.93
8.0.160.0060.00316.85
8.0.150.0000.01116.90
8.0.140.0000.00916.86
8.0.130.0050.00313.30
8.0.120.0000.01016.99
8.0.110.0030.00617.01
8.0.100.0060.00316.93
8.0.90.0030.00617.05
8.0.80.0120.00917.01
8.0.70.0000.00916.90
8.0.60.0060.00316.89
8.0.50.0030.00716.87
8.0.30.0120.01417.23
8.0.20.0170.01517.40
8.0.10.0030.00717.18
8.0.00.0080.01817.03
7.4.330.0000.00715.18
7.4.320.0040.00416.81
7.4.300.0040.01116.71
7.4.290.0100.00316.75
7.4.280.0030.00616.84
7.4.270.0000.00916.79
7.4.260.0030.00613.47
7.4.250.0030.00616.75
7.4.240.0030.00616.69
7.4.230.0000.00916.80
7.4.220.0100.01316.74
7.4.210.0090.00916.73
7.4.200.0030.00616.79
7.4.160.0160.00616.79
7.4.150.0120.00917.40
7.4.140.0130.01017.86
7.4.130.0080.01216.82
7.4.120.0110.01016.68
7.4.110.0060.01916.63
7.4.100.0110.01516.54
7.4.90.0210.01016.81
7.4.80.0000.02419.39
7.4.70.0130.01616.62
7.4.60.0110.01016.78
7.4.50.0030.00316.66
7.4.40.0060.01616.51
7.4.30.0100.01016.77
7.4.00.0040.01515.18
7.3.330.0000.00813.08
7.3.320.0000.00713.18
7.3.310.0090.00316.18
7.3.300.0050.00516.36
7.3.290.0090.00916.30
7.3.280.0080.01116.34
7.3.270.0120.01217.40
7.3.260.0150.00916.28
7.3.250.0120.01316.53
7.3.240.0130.01016.47
7.3.230.0090.01316.71
7.3.210.0160.01316.65
7.3.200.0110.01119.39
7.3.190.0140.01416.23
7.3.180.0100.01316.68
7.3.170.0090.01416.64
7.3.160.0030.01816.61
7.3.120.0070.01614.86
7.3.110.0050.01514.91
7.3.100.0070.01214.95
7.3.90.0060.01114.90
7.3.80.0050.01514.89
7.3.70.0090.01114.88
7.3.60.0060.01114.97
7.3.50.0020.01414.97
7.3.40.0050.01214.91
7.3.30.0060.00814.76
7.3.20.0080.00916.66
7.3.10.0050.00816.71
7.3.00.0020.01616.78
7.2.330.0160.01316.70
7.2.320.0200.01516.77
7.2.310.0130.01616.67
7.2.300.0050.01116.62
7.2.290.0070.01416.59
7.2.250.0040.01514.89
7.2.240.0080.01315.13
7.2.230.0090.01415.05
7.2.220.0050.01115.12
7.2.210.0050.01115.04
7.2.200.0040.01514.99
7.2.190.0060.01115.21
7.2.180.0050.01015.08
7.2.170.0040.01415.06
7.2.60.0060.01217.00
7.2.00.0090.00919.41
7.1.330.0090.00915.75
7.1.320.0080.01115.87
7.1.310.0040.01415.91
7.1.300.0060.01115.94
7.1.290.0000.01515.78
7.1.280.0030.01415.91
7.1.270.0100.00815.96
7.1.260.0020.01216.00
7.1.200.0130.00615.55
7.1.100.0000.01318.22
7.1.70.0030.00817.33
7.1.60.0180.01419.70
7.1.50.0160.01216.93
7.1.00.0070.08022.38
7.0.200.0060.00916.80
7.0.140.0100.07322.00
7.0.60.0130.08319.92
7.0.50.0070.09017.79
7.0.40.0030.06019.98
7.0.30.0270.08020.21
7.0.20.0270.08320.03
7.0.10.0100.09020.19
7.0.00.0070.04720.02
5.6.280.0030.09321.09
5.6.210.0070.05020.53
5.6.200.0130.09018.18
5.6.190.0070.11020.62
5.6.180.0100.05720.36
5.6.170.0370.08320.64
5.6.160.0070.10320.41
5.6.150.0100.08318.16
5.6.140.0030.06318.23
5.6.130.0030.09018.16
5.6.120.0100.06320.99
5.6.110.0030.07320.87
5.6.100.0070.08020.99
5.6.90.0100.05021.02
5.6.80.0230.08720.37
5.5.350.0300.09020.46
5.5.340.0000.08017.98
5.5.330.0030.05020.48
5.5.320.0300.04320.32
5.5.310.0270.07020.29
5.5.300.0130.09317.98
5.5.290.0100.08017.89
5.5.280.0100.09720.68
5.5.270.0000.06720.75
5.5.260.0100.08320.83
5.5.250.0100.09020.49
5.5.240.0130.04020.06
5.4.450.0500.07319.50
5.4.440.0130.07319.48
5.4.430.0200.06719.51
5.4.420.0130.07719.11
5.4.410.0000.07018.71
5.4.400.0200.06718.80
5.4.390.0200.07018.73
5.4.380.0100.07018.64
5.4.370.0300.05018.71
5.4.360.0270.04718.62
5.4.350.0070.04911.99
5.4.340.0110.05911.98
5.4.320.0080.05312.47
5.4.310.0060.04712.46
5.4.300.0060.04612.46
5.4.290.0060.04912.46
5.4.280.0030.05412.36
5.4.270.0070.05012.36
5.4.260.0080.05112.36
5.4.250.0050.05012.36
5.4.240.0050.04812.36
5.4.230.0020.05212.35
5.4.220.0040.05012.35
5.4.210.0060.04612.35
5.4.200.0060.04712.35
5.4.190.0060.05712.35
5.4.180.0090.06612.35
5.4.170.0070.06812.36
5.4.160.0040.05112.36
5.4.150.0100.04912.36
5.4.140.0070.04612.04
5.4.130.0030.04912.03
5.4.120.0050.04612.00
5.4.110.0050.04611.99
5.4.100.0070.04511.99
5.4.90.0080.04511.99
5.4.80.0030.06312.00
5.4.70.0060.04911.99
5.4.60.0060.05011.99
5.4.50.0050.05511.99
5.4.40.0030.05611.98
5.4.30.0040.05011.98
5.4.20.0050.04811.98
5.4.10.0070.04611.97
5.4.00.0040.05211.46
5.3.290.0100.04712.80
5.3.280.0040.05212.71
5.3.270.0050.05512.72
5.3.260.0060.05312.72
5.3.250.0140.07812.72
5.3.240.0090.05612.72
5.3.230.0060.05212.71
5.3.220.0070.04912.68
5.3.210.0050.05112.68
5.3.200.0090.04712.68
5.3.190.0070.04912.68
5.3.180.0040.05112.68
5.3.170.0100.06012.67
5.3.160.0120.06412.68
5.3.150.0030.05112.68
5.3.140.0030.05012.66
5.3.130.0040.05212.65
5.3.120.0080.04812.65
5.3.110.0050.05112.66
5.3.100.0040.05312.13
5.3.90.0080.04412.09
5.3.80.0030.04912.08
5.3.70.0060.05112.08
5.3.60.0040.03912.07
5.3.50.0070.04912.01
5.3.40.0050.03812.01
5.3.30.0070.03811.96
5.3.20.0090.04011.74
5.3.10.0090.03411.71
5.3.00.0040.03911.70
5.2.170.0010.0359.20
5.2.160.0040.0319.20
5.2.150.0020.0349.20
5.2.140.0050.0359.20
5.2.130.0060.0359.16
5.2.120.0040.0309.16
5.2.110.0040.0329.16
5.2.100.0030.0309.16
5.2.90.0050.0299.16
5.2.80.0070.0289.15
5.2.70.0070.0289.16
5.2.60.0060.0339.11
5.2.50.0040.0339.08
5.2.40.0050.0309.07
5.2.30.0070.0349.05
5.2.20.0060.0359.04
5.2.10.0030.0358.94
5.2.00.0060.0298.80
5.1.60.0050.1408.11
5.1.50.0050.1548.10
5.1.40.0050.1408.08
5.1.30.0020.1608.43
5.1.20.0020.1458.45
5.1.10.0040.1458.18
5.1.00.0050.1578.18
5.0.50.0050.1596.65
5.0.40.0040.1206.50
5.0.30.0090.1366.32
5.0.20.0030.1216.29
5.0.10.0060.1176.27
5.0.00.0080.1276.26
4.4.90.0000.1264.78
4.4.80.0030.1234.75
4.4.70.0020.1254.76
4.4.60.0050.1214.75
4.4.50.0030.1204.77
4.4.40.0060.1474.71
4.4.30.0040.1404.76
4.4.20.0060.1284.85
4.4.10.0030.1294.84
4.4.00.0010.1424.76
4.3.110.0030.1194.67
4.3.100.0020.1164.67
4.3.90.0030.1224.64
4.3.80.0050.1354.58
4.3.70.0030.1144.63
4.3.60.0060.1174.63
4.3.50.0010.1194.63
4.3.40.0040.1254.54
4.3.30.0030.1433.30
4.3.20.0020.1053.29
4.3.10.0020.1193.25
4.3.00.0100.1407.11

preferences:
42.24 ms | 400 KiB | 5 Q