3v4l.org

run code in 300+ PHP versions simultaneously
<?php preg_match("/^(aaa)(?:(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)
8.3.40.0100.01018.87
8.3.30.0110.00418.59
8.3.20.0040.00421.63
8.3.10.0040.00421.77
8.3.00.0040.00419.55
8.2.170.0040.01122.96
8.2.160.0100.01022.24
8.2.150.0000.00724.18
8.2.140.0060.00324.66
8.2.130.0030.00519.39
8.2.120.0060.00326.16
8.2.110.0030.00619.31
8.2.100.0040.00817.56
8.2.90.0090.00017.84
8.2.80.0030.00717.97
8.2.70.0050.00317.80
8.2.60.0030.00517.91
8.2.50.0050.00318.10
8.2.40.0000.00720.47
8.2.30.0050.00219.42
8.2.20.0040.00417.94
8.2.10.0040.00417.82
8.2.00.0040.00417.87
8.1.270.0070.00023.99
8.1.260.0040.00426.35
8.1.250.0090.00028.09
8.1.240.0040.00819.14
8.1.230.0090.00322.68
8.1.220.0000.00917.74
8.1.210.0000.00818.77
8.1.200.0060.00317.23
8.1.190.0060.00317.23
8.1.180.0040.00418.10
8.1.170.0030.00518.65
8.1.160.0080.00018.79
8.1.150.0030.00318.97
8.1.140.0000.00717.59
8.1.130.0070.00017.53
8.1.120.0040.00417.41
8.1.110.0000.00717.46
8.1.100.0000.00817.45
8.1.90.0030.00617.41
8.1.80.0050.00317.36
8.1.70.0030.00317.37
8.1.60.0050.00517.57
8.1.50.0000.00817.55
8.1.40.0000.00817.54
8.1.30.0090.00017.56
8.1.20.0030.00617.73
8.1.10.0100.00017.59
8.1.00.0050.00317.52
8.0.300.0090.00021.72
8.0.290.0000.00916.58
8.0.280.0050.00318.25
8.0.270.0050.00317.14
8.0.260.0030.00316.75
8.0.250.0030.00316.87
8.0.240.0060.00316.88
8.0.230.0070.00016.98
8.0.220.0050.00316.86
8.0.210.0030.00316.95
8.0.200.0040.00416.96
8.0.190.0070.00016.93
8.0.180.0000.00716.99
8.0.170.0080.00316.81
8.0.160.0030.00316.93
8.0.150.0040.00416.86
8.0.140.0070.00016.90
8.0.130.0000.00513.34
8.0.120.0000.00816.83
8.0.110.0000.00716.87
8.0.100.0000.00716.94
8.0.90.0030.00316.79
8.0.80.0190.00416.97
8.0.70.0020.00416.79
8.0.60.0040.00416.96
8.0.50.0040.00416.78
8.0.30.0110.01017.29
8.0.20.0120.00817.40
8.0.10.0040.00416.90
8.0.00.0110.01016.81
7.4.330.0000.00515.55
7.4.320.0000.00616.49
7.4.300.0040.00416.56
7.4.290.0000.00716.57
7.4.280.0000.00716.55
7.4.270.0030.00616.56
7.4.260.0050.00216.67
7.4.250.0000.00816.64
7.4.240.0050.00216.73
7.4.230.0070.00016.52
7.4.220.0000.00816.77
7.4.210.0050.01016.67
7.4.200.0070.00016.74
7.4.140.0100.01017.86
7.4.130.0060.01116.62
7.4.120.0110.01016.55
7.4.110.0100.01416.47
7.4.100.0110.00616.47
7.4.90.0060.01116.39
7.4.80.0130.00719.39
7.4.70.0060.01116.39
7.4.60.0030.01316.60
7.4.50.0000.01716.38
7.4.40.0090.00916.73
7.4.00.0050.00514.70
7.3.330.0050.00013.19
7.3.320.0000.00613.11
7.3.310.0000.00816.34
7.3.300.0000.00716.15
7.3.290.0000.00716.31
7.3.280.0100.00816.28
7.3.260.0090.00916.30
7.3.240.0100.01216.39
7.3.230.0090.00916.45
7.3.210.0030.01316.32
7.3.200.0150.00416.52
7.3.190.0030.01216.27
7.3.180.0000.01616.52
7.3.170.0140.00316.27
7.3.160.0090.00616.60
7.3.10.0090.00316.60
7.3.00.0030.00716.46
7.2.330.0090.00916.53
7.2.320.0110.01116.39
7.2.310.0040.01616.52
7.2.300.0080.01216.73
7.2.290.0090.00916.73
7.2.130.0060.00816.89
7.2.120.0000.01216.91
7.2.110.0060.00616.67
7.2.100.0080.00316.88
7.2.90.0080.00617.11
7.2.80.0030.00716.84
7.2.70.0060.00716.96
7.2.60.0060.00616.72
7.2.50.0050.00816.99
7.2.40.0330.01217.42
7.2.30.0450.00717.45
7.2.20.0880.00817.42
7.2.10.0450.00617.53
7.2.00.0710.00517.40
7.1.250.0000.01015.67
7.1.200.0000.01415.79
7.1.160.1070.00916.67
7.1.150.0910.01016.60
7.1.140.0810.00916.74
7.1.130.0900.00916.92
7.1.120.1350.00916.71
7.1.110.1330.01016.23
7.1.100.0940.01116.21
7.1.90.0840.00915.95
7.1.80.0930.00916.29
7.1.70.0940.00915.01
7.1.60.1130.01233.20
7.1.50.2170.01632.64
7.1.40.2090.01932.45
7.1.30.1390.01532.65
7.1.20.1320.01632.53
7.1.10.1140.00914.59
7.1.00.0770.00814.67

preferences:
55.18 ms | 400 KiB | 5 Q