3v4l.org

run code in 300+ PHP versions simultaneously
<?php $email = 'मी@example.com'; // original $regex0 = "/^(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){255,})(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){65,}@)(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E\\pL\\pN]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F\\pL\\pN]|(?:\\x5C[\\x00-\\x7F]))*\\x22))(?:\\.(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E\\pL\\pN]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F\\pL\\pN]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}:)|(?:(?!(?:.*[a-f0-9]:){5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}:)?)))?(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\\.(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\\]))$/iDu"; var_dump(preg_match($regex0, $email)); // modified $regex0 = "/^(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){255,})(?!(?:(?:\\x22?\\x5C[\\x00-\\x7E]\\x22?)|(?:\\x22?[^\\x5C\\x22]\\x22?)){65,}@)(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E\\pL\\pN\\pM]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F\\pL\\pN\\pM]|(?:\\x5C[\\x00-\\x7F]))*\\x22))(?:\\.(?:(?:[\\x21\\x23-\\x27\\x2A\\x2B\\x2D\\x2F-\\x39\\x3D\\x3F\\x5E-\\x7E\\pL\\pN\\pM]+)|(?:\\x22(?:[\\x01-\\x08\\x0B\\x0C\\x0E-\\x1F\\x21\\x23-\\x5B\\x5D-\\x7F\\pL\\pN\\pM]|(?:\\x5C[\\x00-\\x7F]))*\\x22)))*@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}:)|(?:(?!(?:.*[a-f0-9]:){5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}:)?)))?(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\\.(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\\]))$/iDu"; var_dump(preg_match($regex0, $email));

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)
8.3.60.0080.01218.92
8.3.50.0170.00716.98
8.3.40.0070.01022.20
8.3.30.0110.01119.37
8.3.20.0100.00024.18
8.3.10.0030.00624.66
8.3.00.0040.00426.16
8.2.180.0070.01025.92
8.2.170.0130.00319.27
8.2.160.0130.00322.96
8.2.150.0090.00025.66
8.2.140.0090.00024.66
8.2.130.0060.00326.16
8.2.120.0040.00426.35
8.2.110.0070.00319.70
8.2.100.0060.00618.51
8.2.90.0060.00318.58
8.2.80.0000.00919.12
8.2.70.0000.01018.22
8.2.60.0030.00618.38
8.2.50.0000.00918.11
8.2.40.0040.00418.63
8.2.30.0060.00318.57
8.2.20.0030.00618.53
8.2.10.0000.00919.63
8.2.00.0030.00619.82
8.1.280.0200.00325.92
8.1.270.0030.00623.99
8.1.260.0120.00928.09
8.1.250.0090.00028.09
8.1.240.0100.00322.31
8.1.230.0070.00721.50
8.1.220.0000.00917.91
8.1.210.0060.00318.77
8.1.200.0060.00318.11
8.1.190.0030.00717.85
8.1.180.0040.00718.10
8.1.170.0030.00719.10
8.1.160.0070.00319.30
8.1.150.0060.00319.45
8.1.140.0030.00519.26
8.1.130.0090.00020.63
8.1.120.0090.00017.93
8.1.110.0030.00617.91
8.1.100.0030.00517.98
8.1.90.0080.00017.91
8.1.80.0030.00818.05
8.1.70.0050.00317.98
8.1.60.0000.00918.04
8.1.50.0060.00317.99
8.1.40.0060.00318.13
8.1.30.0000.00918.05
8.1.20.0090.00018.05
8.1.10.0000.00818.02
8.1.00.0030.01320.74
8.0.300.0040.00418.77
8.0.290.0070.00317.25
8.0.280.0000.00818.82
8.0.270.0030.00518.63
8.0.260.0050.00218.78
8.0.250.0060.00417.54
8.0.240.0040.00417.45
8.0.230.0030.00517.53
8.0.220.0050.00317.43
8.0.210.0040.00417.35
8.0.200.0030.00517.45
8.0.190.0030.00617.57
8.0.180.0040.00417.54
8.0.170.0040.00817.48
8.0.160.0030.00617.47
8.0.150.0090.00317.39
8.0.140.0000.00817.32
8.0.130.0040.00413.96
8.0.120.0000.00817.48
8.0.110.0060.00317.23
8.0.100.0060.00317.42
8.0.90.0050.00417.37
8.0.80.0060.00817.38
8.0.70.0030.00617.37
8.0.60.0000.00917.32
8.0.50.0060.00317.38
8.0.30.0100.00517.43
8.0.20.0100.00817.47
8.0.10.0000.01017.53
8.0.00.0060.00817.37
7.4.330.0030.00315.55
7.4.320.0000.00817.02
7.4.300.0070.00017.00
7.4.290.0000.00816.95
7.4.280.0030.00517.13
7.4.270.0030.00517.14
7.4.260.0070.00013.92
7.4.250.0000.01116.98
7.4.240.0080.00017.04
7.4.230.0000.00816.96
7.4.220.0050.00317.05
7.4.210.0050.01217.06
7.4.200.0030.00617.08
7.4.190.0030.00616.93
7.4.180.0040.00417.18
7.4.160.0040.00417.13
7.4.150.0040.00416.93
7.4.140.0000.00917.02
7.4.130.0120.00716.93
7.4.120.0080.00716.74
7.4.110.0120.00416.86
7.4.100.0070.00816.81
7.4.90.0080.01016.71
7.4.80.0100.00716.77
7.4.70.0120.00516.87
7.4.60.0040.01216.97
7.4.50.0130.00816.88
7.4.40.0140.00516.70
7.4.30.0100.00816.86
7.4.20.0130.00516.93
7.4.10.0130.00516.90
7.4.00.0080.00716.96
7.3.330.0060.00316.91
7.3.320.0000.00813.78
7.3.310.0100.00216.76
7.3.300.0040.00416.81
7.3.290.0080.01016.80
7.3.280.0040.00416.86
7.3.270.0000.00716.78
7.3.260.0080.00616.94
7.3.250.0110.00716.89
7.3.240.0060.00916.66
7.3.230.0120.00516.79
7.3.220.0060.01216.72
7.3.210.0070.00816.84
7.3.200.0150.00516.77
7.3.190.0050.01316.68
7.3.180.0130.00516.86
7.3.170.0120.01016.78
7.3.160.0120.00616.76
7.3.150.0110.00716.83
7.3.140.0040.01216.74
7.3.130.0100.00816.72
7.3.120.0110.00616.73
7.3.110.0090.01016.84
7.3.100.0070.01016.78
7.3.90.0140.00316.92
7.3.80.0070.01216.88
7.3.70.0060.01216.83
7.3.60.0090.00716.94
7.3.50.0090.00716.90
7.3.40.0130.00316.81
7.3.30.0090.00816.78
7.3.20.0090.00717.68
7.3.10.0100.00617.79
7.3.00.0110.00617.81
7.2.340.0140.00316.82
7.2.330.0090.01016.97
7.2.320.0100.01116.83
7.2.310.0190.00216.84
7.2.300.0110.00916.89
7.2.290.0110.00616.88
7.2.280.0100.00916.98
7.2.270.0100.01316.92
7.2.260.0110.00716.87
7.2.250.0110.00916.69
7.2.240.0060.01216.86
7.2.230.0110.00816.93
7.2.220.0040.01316.79
7.2.210.0140.00416.77
7.2.200.0070.01016.86
7.2.190.0080.00916.77
7.2.180.0060.01016.95
7.2.170.0050.01116.88
7.2.160.0020.01416.92
7.2.150.0100.00717.76
7.2.140.0090.00617.86
7.2.130.0110.00617.96
7.2.120.0060.01017.90
7.2.110.0130.00617.86
7.2.100.0150.01118.01
7.2.90.0130.01317.99
7.2.80.0130.00817.89
7.2.70.0160.00717.89
7.2.60.0170.00618.01
7.2.50.0110.00917.83
7.2.40.0140.01117.91
7.2.30.0080.01017.87
7.2.20.0100.00917.72
7.2.10.0110.00717.84
7.2.00.0030.01517.73

preferences:
37.59 ms | 400 KiB | 5 Q