3v4l.org

run code in 300+ PHP versions simultaneously
<?php $regexEncoding = "CP-1251"; var_dump(mb_regex_encoding($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)
8.3.40.0090.00918.67
8.3.30.0110.00318.59
8.3.20.0050.00318.57
8.3.10.0060.00320.53
8.3.00.0040.00417.38
8.2.170.0090.00622.96
8.2.160.0070.00722.18
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0070.00019.71
8.2.110.0030.00620.97
8.2.100.0040.00817.91
8.2.90.0060.00320.95
8.2.80.0080.00017.80
8.2.70.0050.00317.63
8.2.60.0080.00017.80
8.2.50.0030.00518.07
8.2.40.0030.00518.03
8.2.30.0070.00018.05
8.2.20.0040.00417.71
8.2.10.0040.00417.78
8.2.00.0040.00417.68
8.1.270.0040.00424.66
8.1.260.0000.00726.35
8.1.250.0060.00328.09
8.1.240.0060.00322.47
8.1.230.0070.00420.89
8.1.220.0040.00417.74
8.1.210.0030.00518.77
8.1.200.0090.00017.22
8.1.190.0040.00417.40
8.1.180.0040.00418.10
8.1.170.0000.00718.91
8.1.160.0040.00418.81
8.1.150.0040.00418.64
8.1.140.0040.00417.37
8.1.130.0030.00317.81
8.1.120.0000.00717.28
8.1.110.0000.00717.38
8.1.100.0070.00017.20
8.1.90.0030.00317.29
8.1.80.0070.00017.43
8.1.70.0070.00017.36
8.1.60.0000.00717.47
8.1.50.0000.00717.41
8.1.40.0050.00217.52
8.1.30.0040.00417.59
8.1.20.0040.00417.63
8.1.10.0050.00217.54
8.1.00.0030.00517.50
8.0.300.0030.00519.85
8.0.290.0000.00816.63
8.0.280.0070.00018.28
8.0.270.0030.00317.19
8.0.260.0000.00716.72
8.0.250.0040.00416.84
8.0.240.0000.00816.96
8.0.230.0070.00016.84
8.0.220.0000.00716.84
8.0.210.0000.00716.75
8.0.200.0030.00316.93
8.0.190.0040.00416.89
8.0.180.0000.00716.75
8.0.170.0040.00416.79
8.0.160.0080.00016.87
8.0.150.0060.00316.71
8.0.140.0030.00516.87
8.0.130.0030.00313.26
8.0.120.0000.00816.83
8.0.110.0050.00316.73
8.0.100.0000.00716.69
8.0.90.0000.00716.69
8.0.80.0090.00916.93
8.0.70.0070.00016.70
8.0.60.0030.00316.88
8.0.50.0070.00016.77
8.0.30.0100.00916.99
8.0.20.0130.01116.99
8.0.10.0050.00216.99
8.0.00.0070.01016.47
7.4.330.0000.00512.87
7.4.320.0000.00716.52
7.4.300.0060.00016.39
7.4.290.0000.00716.53
7.4.280.0040.00416.47
7.4.270.0030.00316.38
7.4.260.0000.00513.24
7.4.250.0040.00416.51
7.4.240.0080.00016.43
7.4.230.0070.00016.62
7.4.220.0120.00616.48
7.4.210.0070.01016.49
7.4.200.0070.00016.32
7.4.190.0020.00516.58
7.4.160.0090.01316.30
7.4.150.0100.00716.58
7.4.140.0110.00816.49
7.4.130.0170.01616.47
7.4.120.0070.01316.40
7.4.110.0110.00616.29
7.4.100.0030.01316.21
7.4.90.0110.00816.25
7.4.80.0070.01316.51
7.4.70.0110.00616.41
7.4.60.0090.00816.52
7.4.50.0030.00316.62
7.4.40.0070.00716.33
7.4.30.0070.01016.38
7.4.00.0060.00814.81
7.3.330.0030.00313.05
7.3.320.0000.00512.93
7.3.310.0070.00016.06
7.3.300.0030.00316.10
7.3.290.0090.00916.24
7.3.280.0060.01216.18
7.3.270.0140.00916.37
7.3.260.0080.00816.18
7.3.250.0160.00316.45
7.3.240.0200.00316.45
7.3.230.0000.01616.18
7.3.210.0030.01316.32
7.3.200.0140.00319.39
7.3.190.0150.00716.46
7.3.180.0090.00616.31
7.3.170.0060.00916.25
7.3.160.0090.00616.13
7.3.120.0090.00814.78
7.3.110.0070.01114.54
7.3.100.0070.00814.77
7.3.90.0070.00614.78
7.3.80.0040.00614.47
7.3.70.0050.00914.68
7.3.60.0060.00514.54
7.3.50.0050.00814.64
7.3.40.0070.01014.63
7.3.30.0030.00914.52
7.3.20.0040.00916.42
7.3.10.0050.00816.59
7.3.00.0060.00516.40
7.2.330.0040.01416.34
7.2.320.0140.00716.16
7.2.310.0100.01316.21
7.2.300.0110.00616.41
7.2.290.0130.00616.36
7.2.250.0060.01014.99
7.2.240.0080.01114.84
7.2.230.0080.00614.85
7.2.220.0090.00414.87
7.2.210.0060.00714.96
7.2.200.0040.00814.69
7.2.190.0060.01114.84
7.2.180.0070.00714.68
7.2.170.0040.00614.94
7.2.160.0080.00514.74
7.2.150.0120.00316.38
7.2.140.0070.00916.71
7.2.130.0090.00316.52
7.2.120.0060.00716.62
7.2.110.0060.00716.66
7.2.100.0090.00416.72
7.2.90.0090.00316.52
7.2.80.0020.01516.65
7.2.70.0030.00916.78
7.2.60.0050.00816.65
7.2.50.0050.00816.66
7.2.40.0090.00616.63
7.2.30.0090.00416.52
7.2.20.0050.00816.76
7.2.10.0020.01316.65
7.2.00.0080.00616.67
7.1.330.0060.01015.70
7.1.320.0040.01115.77
7.1.310.0060.00915.66
7.1.300.0100.00515.76
7.1.290.0040.01015.78
7.1.280.0070.00615.67
7.1.270.0030.00815.65
7.1.260.0070.00915.66
7.1.250.0020.01115.71
7.1.240.0070.00315.89
7.1.230.0080.00815.80
7.1.220.0000.01315.71
7.1.210.0060.00615.66
7.1.200.0070.01015.46
7.1.190.0000.01015.75
7.1.180.0100.00315.53
7.1.170.0030.00615.63
7.1.160.0040.01115.70
7.1.150.0090.00015.65
7.1.140.0090.00615.73
7.1.130.0040.01115.53
7.1.120.0030.00615.42
7.1.110.0100.00715.84
7.1.100.0000.01315.88
7.1.90.0040.00815.61
7.1.80.0080.00815.79
7.1.70.0040.00716.43
7.1.60.0070.00917.61
7.1.50.0080.01016.35
7.1.40.0060.00915.66
7.1.30.0120.00315.55
7.1.20.0100.00315.81
7.1.10.0000.01015.73
7.1.00.0080.01819.19
7.0.330.0000.00815.07
7.0.320.0040.00715.37
7.0.310.0030.01015.25
7.0.300.0030.01015.28
7.0.290.0050.00315.48
7.0.280.0030.01015.54
7.0.270.0040.00415.34
7.0.260.0030.00715.07
7.0.250.0030.01015.61
7.0.240.0030.00815.12
7.0.230.0000.01615.49
7.0.220.0080.00815.28
7.0.210.0030.01015.52
7.0.200.0230.00514.99
7.0.190.0040.01215.14
7.0.180.0070.00415.37
7.0.170.0000.01315.09
7.0.160.0090.00615.37
7.0.150.0030.00915.09
7.0.140.0050.03918.67
7.0.130.0070.00715.30
7.0.120.0090.03918.66
7.0.110.0120.00015.13
7.0.100.0040.00715.32
7.0.90.0070.00415.14
7.0.80.0090.00615.21
7.0.70.0000.00915.24
7.0.60.0070.02517.67
7.0.50.0030.04916.57
7.0.40.0100.04316.82
7.0.30.0150.03716.72
7.0.20.0130.03916.83
7.0.10.0030.02716.78
7.0.00.0080.02816.79
5.6.400.0070.00714.27
5.6.390.0060.00614.13
5.6.380.0060.00314.47
5.6.370.0030.00514.02
5.6.360.0000.01213.84
5.6.350.0110.00414.04
5.6.340.0100.00014.58
5.6.330.0030.00914.43
5.6.320.0030.00714.51
5.6.310.0090.00614.31
5.6.300.0070.00714.27
5.6.290.0030.00714.32
5.6.280.0070.03817.67
5.6.270.0070.00714.00
5.6.260.0040.00714.23
5.6.250.0060.00614.27
5.6.240.0030.01014.42
5.6.230.0060.00613.99
5.6.220.0000.00914.42
5.6.210.0110.04117.60
5.6.200.0030.02716.02
5.6.190.0030.04717.48
5.6.180.2180.02517.47
5.6.170.0200.04017.43
5.6.160.0080.03017.35
5.6.150.0050.02516.24
5.6.140.0050.03516.22
5.6.130.0070.04516.13
5.6.120.0090.04217.58
5.6.110.0070.04517.55
5.6.100.0100.04417.45
5.6.90.0050.04717.66
5.6.80.0030.03317.19
5.6.70.2220.02317.38
5.6.60.0040.01214.16
5.6.50.0000.01514.31
5.6.40.0030.01414.18
5.6.30.0130.00313.88
5.6.20.0000.01414.13
5.6.10.0080.00614.16
5.6.00.0070.00714.09
5.5.380.0060.00913.91
5.5.370.0060.00314.14
5.5.360.0110.00413.89
5.5.350.0050.04217.37
5.5.340.0050.02115.83
5.5.330.0050.02217.21
5.5.320.0160.04217.18
5.5.310.0160.03817.22
5.5.300.0070.04616.06
5.5.290.0060.04016.27
5.5.280.0050.03217.55
5.5.270.0060.04117.43
5.5.260.0090.04017.54
5.5.250.0010.02917.28
5.5.240.0020.04117.03
5.5.230.0030.01014.05
5.5.220.0000.01514.12
5.5.210.0000.01714.13
5.5.200.0060.00613.95
5.5.190.0120.00413.77
5.5.180.0070.00713.60
5.5.170.0080.00414.17
5.5.160.0140.00014.18
5.5.150.0070.00313.98
5.5.140.0090.00413.67
5.5.130.0030.01013.85
5.5.120.0030.00814.00
5.5.110.0070.01014.11
5.5.100.0060.00614.14
5.5.90.0000.01014.05
5.5.80.0030.00914.13
5.5.70.0030.00613.61
5.5.60.0000.01113.62
5.5.50.0070.00713.84
5.5.40.0070.00713.90
5.5.30.0070.00313.61
5.5.20.0030.00713.64
5.5.10.0090.00613.54
5.5.00.0000.01414.19
5.4.450.0030.02215.61
5.4.440.0040.02215.62
5.4.430.0120.02015.63
5.4.420.0080.01815.47
5.4.410.0030.02215.54
5.4.400.0020.02315.38
5.4.390.0030.02115.48
5.4.380.0070.02315.47
5.4.370.0040.02215.31
5.4.360.0000.02615.40
5.4.350.0060.02015.45
5.4.340.0060.02015.49
5.4.330.0070.00311.81
5.4.320.0050.02015.49
5.4.310.0030.02215.31
5.4.300.0060.03115.47
5.4.290.0050.03515.46
5.4.280.0030.02415.46
5.4.270.0070.03515.49
5.4.260.0030.02715.44
5.4.250.0060.04215.49
5.4.240.0070.03515.29
5.4.230.0070.02315.30
5.4.220.0050.02315.30
5.4.210.0070.03815.46
5.4.200.0050.02515.36
5.4.190.0000.02915.44
5.4.180.0030.04215.40
5.4.170.0040.03515.44
5.4.160.0030.03615.49
5.4.150.0050.02715.39
5.4.140.0070.03814.00
5.4.130.0090.03814.14
5.4.120.0070.03914.08
5.4.110.0070.03813.98
5.4.100.0090.03414.07
5.4.90.0030.04014.03
5.4.80.0120.03214.05
5.4.70.0100.03214.10
5.4.60.0100.03513.96
5.4.50.0010.04414.19
5.4.40.0030.02814.06
5.4.30.0050.04014.09
5.4.20.0090.03514.09
5.4.10.0030.03014.03
5.4.00.0070.03513.76
5.3.290.0060.03613.28
5.3.280.0020.03513.17
5.3.270.0040.04513.19
5.3.260.0050.03113.18
5.3.250.0050.03813.25
5.3.240.0070.03713.19
5.3.230.0080.03813.10
5.3.220.0130.02713.16
5.3.210.0020.04213.15
5.3.200.0110.03813.19
5.3.190.0050.03213.13
5.3.180.0080.03613.15
5.3.170.0030.03413.15
5.3.160.0060.03813.09
5.3.150.0070.03713.15
5.3.140.0030.03813.16
5.3.130.0060.03913.12
5.3.120.0030.02913.16
5.3.110.0000.03113.13
5.3.100.0030.03712.89
5.3.90.0070.03812.89
5.3.80.0070.03212.88
5.3.70.0090.02112.88
5.3.60.0070.04012.87
5.3.50.0050.04112.78
5.3.40.0080.03712.84
5.3.30.0080.02612.82
5.3.20.0030.02412.72
5.3.10.0070.03312.79
5.3.00.0060.03712.71
5.2.170.0030.06311.23
5.2.160.0070.06311.00
5.2.150.0100.05011.03
5.2.140.0030.06711.04
5.2.130.0030.03711.08
5.2.120.0100.05711.18
5.2.110.0030.06011.06
5.2.100.0030.06010.99
5.2.90.0030.05011.06
5.2.80.0030.06311.25
5.2.70.0070.04011.17
5.2.60.0070.05710.98
5.2.50.0030.06011.02
5.2.40.0030.05710.88
5.2.30.0030.05010.79
5.2.20.0000.04011.11
5.2.10.0030.05010.89
5.2.00.0030.04010.70
5.1.60.0070.0279.82
5.1.50.0030.03710.00
5.1.40.0030.0479.88
5.1.30.0000.06010.23
5.1.20.0000.03310.23
5.1.10.0170.03010.08
5.1.00.0070.02010.07
5.0.50.0030.0208.54
5.0.40.0000.0378.45
5.0.30.0030.0678.23
5.0.20.0030.0378.24
5.0.10.0030.0478.17
5.0.00.0070.0608.29
4.4.90.0070.0237.76
4.4.80.0070.0337.76
4.4.70.0070.0307.76
4.4.60.0000.0407.76
4.4.50.0030.0337.76
4.4.40.0000.0537.76
4.4.30.0000.0407.76
4.4.20.0000.0277.76
4.4.10.0030.0277.76
4.4.00.0000.0277.76
4.3.110.0000.0377.76
4.3.100.0030.0307.76
4.3.90.0030.0337.76
4.3.80.0000.0537.76
4.3.70.0070.0277.76
4.3.60.0070.0307.76
4.3.50.0000.0337.76
4.3.40.0000.0337.76
4.3.30.0070.0277.76
4.3.20.0000.0237.76
4.3.10.0000.0207.76
4.3.00.0000.0177.76

preferences:
42.66 ms | 404 KiB | 6 Q