3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match("/^(?<NAME_A>aaa)(?:(?<NAME_B>x)?)/", "aaay", $matches, PREG_UNMATCHED_AS_NULL); var_dump($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)
8.3.60.0140.00716.50
8.3.50.0100.01016.28
8.3.40.0040.01118.77
8.3.30.0060.00918.43
8.3.20.0080.00021.85
8.3.10.0040.00423.51
8.3.00.0040.00419.42
8.2.180.0120.00618.54
8.2.170.0100.01022.96
8.2.160.0110.00422.02
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00419.06
8.2.120.0030.00526.35
8.2.110.0070.00319.27
8.2.100.0060.00617.91
8.2.90.0000.00817.78
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0040.00417.93
8.2.50.0040.00418.07
8.2.40.0060.00319.84
8.2.30.0030.00617.84
8.2.20.0060.00317.91
8.2.10.0030.00518.01
8.2.00.0070.00017.96
8.1.280.0150.00325.92
8.1.270.0000.00822.05
8.1.260.0070.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00622.36
8.1.230.0000.01220.92
8.1.220.0000.00817.74
8.1.210.0080.00018.89
8.1.200.0040.00417.35
8.1.190.0000.00817.35
8.1.180.0030.00618.10
8.1.170.0090.00318.48
8.1.160.0050.00218.66
8.1.150.0030.00418.82
8.1.140.0000.00717.68
8.1.130.0050.00318.94
8.1.120.0040.00417.39
8.1.110.0040.00417.53
8.1.100.0000.00817.52
8.1.90.0060.00317.49
8.1.80.0090.00017.51
8.1.70.0000.00717.48
8.1.60.0000.00817.57
8.1.50.0040.00417.55
8.1.40.0040.00417.58
8.1.30.0030.00517.70
8.1.20.0000.00717.71
8.1.10.0050.00317.61
8.1.00.0050.00217.43
8.0.300.0050.00319.82
8.0.290.0080.00016.63
8.0.280.0050.00218.21
8.0.270.0030.00317.23
8.0.260.0030.00317.18
8.0.250.0060.00016.94
8.0.240.0080.00016.98
8.0.230.0040.00416.88
8.0.220.0050.00316.82
8.0.210.0030.00316.89
8.0.200.0030.00316.88
8.0.190.0080.00016.88
8.0.180.0000.00816.96
8.0.170.0030.00716.96
8.0.160.0050.00316.93
8.0.150.0070.00016.93
8.0.140.0040.00416.76
8.0.130.0000.00713.32
8.0.120.0060.00316.86
8.0.110.0050.00216.75
8.0.100.0000.00817.02
8.0.90.0080.00016.87
8.0.80.0110.01116.79
8.0.70.0030.00516.88
8.0.60.0000.00716.86
8.0.50.0000.00716.97
8.0.30.0110.00717.02
8.0.20.0090.01617.40
8.0.10.0040.00416.98
8.0.00.0140.00416.83
7.4.330.0030.00315.55
7.4.320.0000.00616.73
7.4.300.0070.00016.61
7.4.290.0040.00416.59
7.4.280.0040.00416.63
7.4.270.0060.00316.73
7.4.260.0090.00016.59
7.4.250.0030.00516.52
7.4.240.0000.00816.54
7.4.230.0000.00816.76
7.4.220.0050.00216.56
7.4.210.0060.00916.70
7.4.200.0000.00716.59
7.4.160.0040.01116.47
7.4.140.0130.00617.86
7.4.130.0050.01116.71
7.4.120.0110.00716.52
7.4.110.0070.01316.62
7.4.100.0090.00916.46
7.4.90.0070.01016.68
7.4.80.0170.00619.39
7.4.70.0060.01816.45
7.4.60.0080.00816.55
7.4.50.0140.00316.37
7.4.40.0060.01016.62
7.4.00.0040.01114.90
7.3.330.0060.00013.11
7.3.320.0030.00313.17
7.3.310.0000.00716.34
7.3.300.0030.00316.31
7.3.290.0000.00716.27
7.3.280.0040.01016.36
7.3.260.0130.00416.54
7.3.240.0070.01116.44
7.3.230.0140.00316.38
7.3.210.0120.00416.51
7.3.200.0130.00316.49
7.3.190.0030.01416.55
7.3.180.0060.01016.39
7.3.170.0160.00316.46
7.3.160.0060.00916.34
7.2.330.0080.00816.57
7.2.320.0070.01116.56
7.2.310.0060.01116.39
7.2.300.0070.01716.57
7.2.290.0090.00916.80
7.2.60.0100.00316.86
7.2.50.0110.00317.07
7.2.40.0090.01419.95
7.2.30.0110.01419.64
7.2.20.0130.00819.92
7.2.10.0120.01519.93
7.2.00.0080.01320.00
7.1.200.0060.00315.83
7.1.160.0090.01118.44
7.1.150.0120.01018.64
7.1.140.0050.02018.71
7.1.130.0080.01118.35
7.1.120.0090.01118.57
7.1.110.0050.01117.84
7.1.100.0080.01017.84
7.1.90.0090.01018.12
7.1.80.0090.01118.03
7.1.70.0070.01116.89
7.1.60.0270.01135.01
7.1.50.0290.01734.60
7.1.40.0250.02634.24
7.1.30.0290.02034.10
7.1.20.0330.01734.48
7.1.10.0070.01316.24
7.1.00.0040.01416.63

preferences:
42.39 ms | 400 KiB | 5 Q