3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regexEncoding = "windows-1251"; var_dump(mb_regex_encoding($regexEncoding));

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)
8.3.70.0100.01016.63
8.3.60.0110.00718.43
8.3.50.0050.01021.89
8.3.40.0140.00718.80
8.3.30.0120.00418.71
8.3.20.0120.00418.65
8.3.10.0040.00420.83
8.3.00.0050.00321.64
8.2.180.0100.01016.75
8.2.170.0140.00022.96
8.2.160.0070.01320.39
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0040.00421.13
8.2.110.0070.00320.49
8.2.100.0000.01117.72
8.2.90.0040.00419.04
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0080.00017.93
8.2.50.0000.00818.07
8.2.40.0000.00717.84
8.2.30.0000.00819.73
8.2.20.0000.00817.59
8.2.10.0000.00817.64
8.2.00.0040.00417.68
8.1.280.0130.01325.92
8.1.270.0000.00723.99
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0030.00622.38
8.1.230.0080.00421.02
8.1.220.0040.00418.77
8.1.210.0050.00318.77
8.1.200.0030.00617.13
8.1.190.0080.00017.41
8.1.180.0040.00418.10
8.1.170.0030.00518.64
8.1.160.0000.00718.87
8.1.150.0040.00418.55
8.1.140.0000.00717.36
8.1.130.0040.00417.81
8.1.120.0040.00417.30
8.1.110.0050.00217.40
8.1.100.0040.00417.41
8.1.90.0000.00817.38
8.1.80.0040.00417.21
8.1.70.0070.00017.37
8.1.60.0040.00717.55
8.1.50.0020.00517.38
8.1.40.0000.00717.47
8.1.30.0000.00717.60
8.1.20.0050.00317.65
8.1.10.0000.00817.57
8.1.00.0030.00717.56
8.0.300.0000.00719.89
8.0.290.0040.00417.04
8.0.280.0000.00718.37
8.0.270.0000.00817.17
8.0.260.0030.00316.72
8.0.250.0040.00416.82
8.0.240.0030.00616.83
8.0.230.0040.00416.86
8.0.220.0030.00316.88
8.0.210.0040.00416.90
8.0.200.0000.00616.93
8.0.190.0040.00416.92
8.0.180.0040.00416.94
8.0.170.0030.00616.79
8.0.160.0000.00816.82
8.0.150.0030.00616.84
8.0.140.0030.00516.73
8.0.130.0050.00013.34
8.0.120.0080.00016.87
8.0.110.0000.00716.74
8.0.100.0040.00416.90
8.0.90.0040.00416.91
8.0.80.0060.00916.80
8.0.70.0040.00416.94
8.0.60.0030.00516.76
8.0.50.0040.00416.92
8.0.30.0160.00216.98
8.0.20.0120.00917.40
8.0.10.0040.00417.11
8.0.00.0070.01316.56
7.4.330.0060.00014.82
7.4.320.0000.00616.43
7.4.300.0030.00316.54
7.4.290.0030.00316.56
7.4.280.0030.00316.50
7.4.270.0000.00616.44
7.4.260.0050.00013.19
7.4.250.0040.00416.47
7.4.240.0070.00016.55
7.4.230.0070.00016.41
7.4.220.0000.01516.48
7.4.210.0060.01016.52
7.4.200.0070.00016.50
7.4.190.0000.00816.42
7.4.160.0080.00816.45
7.4.150.0080.00817.40
7.4.140.0090.00917.86
7.4.130.0080.00916.54
7.4.120.0090.00816.56
7.4.110.0130.01016.46
7.4.100.0060.01216.49
7.4.90.0170.00716.50
7.4.80.0100.01019.37
7.4.70.0100.00616.49
7.4.60.0060.01116.40
7.4.50.0030.00616.25
7.4.40.0070.00722.27
7.4.30.0090.00616.50
7.4.00.0070.01015.20
7.3.330.0050.00012.95
7.3.320.0020.00513.05
7.3.310.0040.00416.02
7.3.300.0000.00716.21
7.3.290.0100.01016.24
7.3.280.0080.00816.17
7.3.270.0120.00317.40
7.3.260.0120.00418.24
7.3.250.0080.01016.27
7.3.240.0060.00916.38
7.3.230.0100.00716.39
7.3.210.0130.00716.15
7.3.200.0090.01319.39
7.3.190.0030.01416.29
7.3.180.0080.00816.20
7.3.170.0060.00916.41
7.3.160.0090.01316.29
7.3.120.0110.00714.84
7.2.330.0090.00916.45
7.2.320.0030.01616.32
7.2.310.0090.01216.46
7.2.300.0130.00316.46
7.2.290.0120.00616.68
7.2.00.0040.01518.96
7.1.100.0110.00317.79
7.1.70.0000.00716.83
7.1.60.0140.01119.40
7.1.50.0160.00716.64
7.1.00.0030.06722.48
7.0.200.0050.00316.57
7.0.140.0030.07322.23
7.0.60.0200.07321.59
7.0.50.0030.04017.66
7.0.40.0170.07720.30
7.0.30.0230.06020.34
7.0.20.0230.08020.16
7.0.10.0130.06320.16
7.0.00.0100.07020.04
5.6.280.0030.07721.01
5.6.210.0070.07320.61
5.6.200.0100.03318.21
5.6.190.0100.08020.77
5.6.180.0200.06720.41
5.6.170.0230.04020.44
5.6.160.0130.07320.48
5.6.150.0030.06018.12
5.6.140.0030.06018.21
5.6.130.0100.08018.20
5.6.120.0030.09021.04
5.6.110.0200.07021.06
5.6.100.0070.09021.07
5.6.90.0100.07321.02
5.6.80.0070.04720.52
5.5.350.0370.07320.43
5.5.340.0030.06018.02
5.5.330.0070.04020.56
5.5.320.0370.07020.29
5.5.310.0200.08720.12
5.5.300.0070.08017.98
5.5.290.0000.04317.91
5.5.280.0170.07320.79
5.5.270.0100.06020.75
5.5.260.0200.05720.86
5.5.250.0070.03720.54
5.5.240.0230.07020.36
5.4.450.4070.04719.52
5.4.440.0100.03319.20
5.4.430.0130.04319.44
5.4.420.2530.03319.33
5.4.410.3500.03719.32
5.4.400.2470.03319.02
5.4.390.4400.02719.19
5.4.380.4830.03719.19
5.4.370.3770.03319.19
5.4.360.3630.04019.18
5.4.350.3630.04318.93
5.4.340.3900.04018.92
5.4.320.3970.04019.15
5.4.310.4170.03019.14
5.4.300.4600.04019.05
5.4.290.4430.04019.04
5.4.280.4800.03719.15
5.4.270.4370.03719.13
5.4.260.3430.03719.04
5.4.250.4900.04318.96
5.4.240.3870.03718.85
5.4.230.3900.04018.97
5.4.220.4470.03718.89
5.4.210.4270.03719.03
5.4.200.4600.03318.84
5.4.190.4570.03718.96
5.4.180.4500.04018.89
5.4.170.4230.04019.24
5.4.160.4800.04019.02
5.4.150.4270.04318.87
5.4.140.4570.04016.13
5.4.130.4370.03716.38
5.4.120.4430.04316.21
5.4.110.4370.03716.48
5.4.100.5000.04016.35
5.4.90.4970.03316.41
5.4.80.4170.04016.47
5.4.70.3830.03716.39
5.4.60.4600.03316.43
5.4.50.3930.03716.30
5.4.40.3970.03316.32
5.4.30.4100.03716.29
5.4.20.4130.03316.38
5.4.10.0070.06316.13
5.4.00.0030.04015.79
5.3.290.3930.03714.54
5.3.280.3630.04014.53
5.3.270.4470.03714.53
5.3.260.4630.04014.52
5.3.250.4030.04014.62
5.3.240.4570.03714.56
5.3.230.4730.03714.57
5.3.220.4670.04014.50
5.3.210.4700.03714.35
5.3.200.4770.03314.52
5.3.190.4000.03314.52
5.3.180.3470.04014.48
5.3.170.3600.03714.51
5.3.160.4270.03714.44
5.3.150.4030.04014.48
5.3.140.4130.04314.64
5.3.130.3230.03714.47
5.3.120.3730.03314.48
5.3.110.2100.03314.33
5.3.100.0000.04713.96
5.3.90.4400.03314.11
5.3.80.4470.04314.03
5.3.70.3870.03713.93
5.3.60.3700.04713.93
5.3.50.3770.04014.03
5.3.40.4570.03013.73
5.3.30.3700.03713.88
5.3.20.3830.03313.50
5.3.10.2230.02713.58
5.3.00.2330.03013.61
5.2.170.3600.03310.97
5.2.160.3830.03011.03
5.2.150.3130.03311.07
5.2.140.3470.04311.30
5.2.130.1270.03311.00
5.2.120.0900.02010.96
5.2.110.1930.02710.93
5.2.100.2130.02711.18
5.2.90.2830.04011.03
5.2.80.2570.03010.94
5.2.70.2570.03011.03
5.2.60.2170.03011.03
5.2.50.3130.02710.94
5.2.40.2070.02710.93
5.2.30.2130.03310.95
5.2.20.2130.03010.89
5.2.10.1670.02710.94
5.2.00.2230.03710.70
5.1.60.2270.02010.04
5.1.50.1770.01310.00
5.1.40.3430.0179.81
5.1.30.2270.02310.38
5.1.20.2700.02310.20
5.1.10.2400.02310.03
5.1.00.2830.02310.04
5.0.50.1070.0208.52
5.0.40.1030.0178.30
5.0.30.1200.0338.18
5.0.20.1600.0178.17
5.0.10.1470.0208.14
5.0.00.1100.0238.14
4.4.90.1270.0135.90
4.4.80.0900.0135.89
4.4.70.1030.0175.75
4.4.60.0800.0175.83
4.4.50.1030.0175.79
4.4.40.1330.0275.79
4.4.30.0970.0205.80
4.4.20.1430.0175.84
4.4.10.1200.0175.94
4.4.00.1230.0205.88
4.3.110.1470.0135.72
4.3.100.1470.0135.73
4.3.90.1470.0205.79
4.3.80.1600.0235.82
4.3.70.1230.0175.69
4.3.60.1900.0135.75
4.3.50.1500.0135.75
4.3.40.1170.0275.76
4.3.30.0870.0175.43
4.3.20.0930.0135.43
4.3.10.1030.0235.43
4.3.00.0970.0175.43

preferences:
47.65 ms | 404 KiB | 6 Q