3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pattern = '/\b' . preg_quote('Ro(M)') . '\b/ui'; $sample = 'Ro(M)'; echo (int)preg_match( $pattern, $sample, $matches).PHP_EOL; print_r($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)
8.3.40.0090.00619.11
8.3.30.0110.00419.13
8.3.20.0040.00420.38
8.3.10.0030.00520.77
8.3.00.0060.00319.51
8.2.170.0030.01022.96
8.2.160.0070.00720.25
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00422.17
8.2.110.0060.00322.34
8.2.100.0000.01218.16
8.2.90.0000.00819.25
8.2.80.0000.00817.97
8.2.70.0040.00417.75
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0080.00018.19
8.2.30.0040.00419.33
8.2.20.0040.00417.83
8.2.10.0000.00818.24
8.2.00.0020.00518.01
8.1.270.0040.00423.98
8.1.260.0090.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00923.79
8.1.230.0070.00319.15
8.1.220.0000.00917.80
8.1.210.0040.00418.77
8.1.200.0040.00417.48
8.1.190.0050.00317.47
8.1.180.0040.00418.10
8.1.170.0060.00318.75
8.1.160.0080.00021.94
8.1.150.0070.00018.89
8.1.140.0040.00417.58
8.1.130.0030.00317.91
8.1.120.0040.00417.60
8.1.110.0000.00817.62
8.1.100.0000.00717.59
8.1.90.0040.00417.66
8.1.80.0040.00417.48
8.1.70.0070.00017.50
8.1.60.0030.00517.79
8.1.50.0040.00417.69
8.1.40.0040.00417.64
8.1.30.0030.00517.80
8.1.20.0080.00017.67
8.1.10.0000.00717.66
8.1.00.0030.00617.57
8.0.300.0030.00518.77
8.0.290.0050.00316.75
8.0.280.0070.00018.37
8.0.270.0070.00017.19
8.0.260.0030.00317.34
8.0.250.0070.00017.16
8.0.240.0000.00817.05
8.0.230.0030.00317.05
8.0.220.0000.00717.13
8.0.210.0030.00317.21
8.0.200.0030.00317.05
8.0.190.0040.00417.06
8.0.180.0000.00717.13
8.0.170.0030.00617.16
8.0.160.0070.00016.99
8.0.150.0040.00416.93
8.0.140.0030.00516.93
8.0.130.0000.00513.48
8.0.120.0050.00317.02
8.0.110.0000.00717.05
8.0.100.0050.00317.25
8.0.90.0050.00317.06
8.0.80.0030.01317.12
8.0.70.0000.00817.01
8.0.60.0000.00717.00
8.0.50.0080.00016.95
8.0.30.0150.00717.39
8.0.20.0090.01017.40
8.0.10.0040.00417.04
8.0.00.0070.01217.13
7.4.330.0060.00015.00
7.4.320.0030.00316.91
7.4.300.0000.00616.76
7.4.290.0070.00016.76
7.4.280.0000.00716.70
7.4.270.0030.00316.70
7.4.260.0080.00016.75
7.4.250.0050.00316.75
7.4.240.0050.00216.82
7.4.230.0040.00416.75
7.4.220.0140.00416.67
7.4.210.0080.00616.67
7.4.200.0030.00316.70
7.4.160.0150.00416.89
7.4.150.0070.01117.40
7.4.140.0120.00517.86
7.4.130.0070.01016.76
7.4.120.0130.00416.79
7.4.110.0120.00616.83
7.4.100.0100.01016.76
7.4.90.0140.00316.74
7.4.80.0090.00919.39
7.4.70.0150.00316.79
7.4.60.0170.00016.84
7.4.50.0080.00016.57
7.4.40.0070.01016.76
7.4.30.0030.01316.79
7.4.00.0030.01215.02
7.3.330.0030.00313.25
7.3.320.0000.00513.16
7.3.310.0030.00416.27
7.3.300.0040.00416.31
7.3.290.0050.01116.47
7.3.280.0100.00516.39
7.3.270.0200.00317.40
7.3.260.0090.00816.45
7.3.250.0100.00816.54
7.3.240.0070.01316.72
7.3.230.0130.00316.39
7.3.210.0120.00616.73
7.3.200.0060.01219.39
7.3.190.0030.02116.36
7.3.180.0040.01116.62
7.3.170.0030.01416.70
7.3.160.0070.01016.46
7.2.330.0100.00716.74
7.2.320.0130.00316.82
7.2.310.0120.00616.76
7.2.300.0150.00916.75
7.2.290.0160.00016.73
7.2.60.0070.00716.81
7.2.00.0110.00719.73
7.1.200.0030.01016.00
7.1.100.0000.01118.33
7.1.70.0060.00617.32
7.1.60.0110.01419.12
7.1.50.0060.01117.14
7.1.00.0070.07322.32
7.0.200.0040.00416.55
7.0.140.0030.07321.95
7.0.60.0100.08019.81
7.0.50.0070.04017.84
7.0.40.0070.09020.25
7.0.30.0200.04020.12
7.0.20.0170.07720.20
7.0.10.0030.09020.18
7.0.00.0070.04320.21
5.6.280.0070.07021.00
5.6.210.0030.08720.75
5.6.200.0030.05718.08
5.6.190.0070.08320.36
5.6.180.0330.05020.57
5.6.170.0430.07020.49
5.6.160.0030.04320.51
5.6.150.0130.07318.17
5.6.140.0030.04018.23
5.6.130.0070.08318.11
5.6.120.0130.07720.79
5.6.110.0130.08021.04
5.6.100.0030.04321.00
5.6.90.0170.07321.06
5.6.80.0030.08720.35
5.5.350.0130.06720.37
5.5.340.0000.06717.98
5.5.330.0030.05020.28
5.5.320.0070.08320.41
5.5.310.0370.06720.29
5.5.300.0200.07318.02
5.5.290.0230.04717.96
5.5.280.0070.03720.84
5.5.270.0170.07320.73
5.5.260.0070.07020.63
5.5.250.0070.05720.79
5.5.240.0170.07320.32
5.4.450.0700.04019.45
5.4.440.0200.04019.45
5.4.430.0270.04719.45
5.4.420.0430.04719.48
5.4.410.0400.04019.45
5.4.400.0530.03018.89
5.4.390.0270.04319.16
5.4.380.0470.05318.59
5.4.370.0200.06318.73
5.4.360.0400.05718.70
5.4.350.0400.05018.70
5.4.340.0230.06318.74
5.4.320.0050.03812.46
5.4.310.0050.03912.45
5.4.300.0060.03612.45
5.4.290.0050.03812.45
5.4.280.0040.03612.34
5.4.270.0030.03812.34
5.4.260.0090.03312.34
5.4.250.0060.04412.35
5.4.240.0060.03712.34
5.4.230.0070.03612.34
5.4.220.0070.03312.34
5.4.210.0030.03912.34
5.4.200.0060.04212.34
5.4.190.0130.03112.33
5.4.180.0080.04012.34
5.4.170.0070.04112.34
5.4.160.0040.03812.34
5.4.150.0070.03412.34
5.4.140.0040.03912.02
5.4.130.0060.03412.01
5.4.120.0070.03711.97
5.4.110.0040.03511.96
5.4.100.0070.04111.96
5.4.90.0050.04311.96
5.4.80.0060.03611.96
5.4.70.0090.03611.96
5.4.60.0020.03811.96
5.4.50.0050.03711.96
5.4.40.0090.03711.95
5.4.30.0040.03611.95
5.4.20.0060.03411.95
5.4.10.0040.03511.95
5.4.00.0060.03711.43
5.3.290.0100.03312.80
5.3.280.0070.04512.71
5.3.270.0080.03512.73
5.3.260.0100.04112.72
5.3.250.0060.03512.71
5.3.240.0050.03712.71
5.3.230.0050.03712.71
5.3.220.0070.03412.68
5.3.210.0060.03812.68
5.3.200.0020.03812.68
5.3.190.0070.03712.68
5.3.180.0070.03612.67
5.3.170.0060.03812.67
5.3.160.0070.03712.67
5.3.150.0070.03812.68
5.3.140.0070.03712.66
5.3.130.0070.03812.66
5.3.120.0050.03912.65
5.3.110.0040.04012.66
5.3.100.0030.04012.12
5.3.90.0080.03412.09
5.3.80.0060.03612.07
5.3.70.0050.04012.07
5.3.60.0040.03712.06
5.3.50.0020.04012.00
5.3.40.0050.03712.00
5.3.30.0090.03311.95
5.3.20.0040.03811.73
5.3.10.0060.03611.70
5.3.00.0050.03711.69
5.2.170.0060.0299.19
5.2.160.0040.0309.19
5.2.150.0050.0329.19
5.2.140.0050.0439.18
5.2.130.0050.0299.14
5.2.120.0050.0289.14
5.2.110.0040.0329.15
5.2.100.0040.0309.15
5.2.90.0080.0369.15
5.2.80.0050.0349.15
5.2.70.0070.0319.15
5.2.60.0040.0309.10
5.2.50.0040.0319.07
5.2.40.0050.0299.05
5.2.30.0050.0309.02
5.2.20.0060.0279.01
5.2.10.0040.0308.93
5.2.00.0050.0308.79
5.1.60.0050.0248.08
5.1.50.0050.0278.07
5.1.40.0050.0238.06
5.1.30.0050.0278.40
5.1.20.0040.0278.43
5.1.10.0040.0268.15
5.1.00.0040.0278.15
5.0.50.0040.0206.63
5.0.40.0040.0186.49
5.0.30.0030.0316.30
5.0.20.0040.0236.27
5.0.10.0060.0206.25
5.0.00.0070.0296.24
4.4.90.0050.0214.78
4.4.80.0030.0224.75
4.4.70.0030.0184.75
4.4.60.0030.0154.75
4.4.50.0030.0154.77
4.4.40.0030.0254.71
4.4.30.0040.0174.76
4.4.20.0020.0194.84
4.4.10.0030.0174.85
4.4.00.0020.0254.76
4.3.110.0020.0244.67
4.3.100.0030.0154.67
4.3.90.0030.0144.64
4.3.80.0030.0274.59
4.3.70.0030.0144.63
4.3.60.0020.0154.63
4.3.50.0030.0154.63
4.3.40.0060.0214.54
4.3.30.0020.0163.29
4.3.20.0000.0203.27
4.3.10.0040.0143.23
4.3.00.0030.01716.73

preferences:
47.98 ms | 400 KiB | 5 Q