3v4l.org

run code in 300+ PHP versions simultaneously
<?php $subject = 'Aaaafaba Bbab'; $ret = preg_replace_callback_array( [ '~[a]+~i' => function ($match) { echo strlen($match[0]), ' matches for "a" found', PHP_EOL; }, '~[b]+~i' => function ($match) { echo strlen($match[0]), ' matches for "b" found', PHP_EOL; } ], $subject ); var_dump($ret); var_dump($subject);

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)
8.3.60.0040.01518.55
8.3.50.0200.00722.17
8.3.40.0070.00718.95
8.3.30.0090.00618.92
8.3.20.0040.00420.21
8.3.10.0040.00421.91
8.3.00.0080.00018.05
8.2.180.0110.01118.30
8.2.170.0150.00022.96
8.2.160.0030.01020.34
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0030.00526.16
8.2.120.0030.00617.88
8.2.110.0060.00322.29
8.2.100.0090.00317.88
8.2.90.0040.00419.25
8.2.80.0090.00317.97
8.2.70.0040.00417.75
8.2.60.0050.00518.05
8.2.50.0090.00018.07
8.2.40.0040.00419.14
8.2.30.0040.00420.67
8.2.20.0000.00817.96
8.2.10.0000.00718.04
8.2.00.0040.00418.08
8.1.280.0070.00725.92
8.1.270.0100.00022.09
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0030.00722.57
8.1.230.0080.00417.48
8.1.220.0080.00017.76
8.1.210.0080.00018.77
8.1.200.0060.00317.50
8.1.190.0030.00517.48
8.1.180.0000.00818.10
8.1.170.0090.00018.71
8.1.160.0040.00421.93
8.1.150.0040.00418.99
8.1.140.0080.00017.53
8.1.130.0000.00717.69
8.1.120.0040.00417.70
8.1.110.0040.00417.61
8.1.100.0060.00317.55
8.1.90.0030.00617.56
8.1.80.0030.00517.61
8.1.70.0030.00317.63
8.1.60.0000.00817.78
8.1.50.0060.00317.68
8.1.40.0050.00317.72
8.1.30.0040.00417.89
8.1.20.0040.00417.78
8.1.10.0050.00217.71
8.1.00.0030.00517.65
8.0.300.0070.00018.77
8.0.290.0020.00516.88
8.0.280.0000.00718.35
8.0.270.0030.00317.29
8.0.260.0030.00317.34
8.0.250.0050.00316.96
8.0.240.0070.00017.15
8.0.230.0040.00416.95
8.0.220.0070.00017.01
8.0.210.0000.00716.99
8.0.200.0000.00717.14
8.0.190.0030.00617.02
8.0.180.0040.00416.94
8.0.170.0040.00417.00
8.0.160.0050.00317.04
8.0.150.0040.00317.03
8.0.140.0040.00416.88
8.0.130.0030.00313.43
8.0.120.0000.00916.98
8.0.110.0040.00417.09
8.0.100.0040.00417.00
8.0.90.0040.00417.11
8.0.80.0040.01117.04
8.0.70.0040.00417.11
8.0.60.0030.00516.98
8.0.50.0040.00416.98
8.0.30.0070.01017.36
8.0.20.0100.00817.45
8.0.10.0040.00416.98
8.0.00.0080.01016.94
7.4.330.0020.00215.08
7.4.320.0030.00316.73
7.4.300.0030.00316.82
7.4.290.0000.00816.70
7.4.280.0070.00016.70
7.4.270.0000.00716.71
7.4.260.0000.00716.79
7.4.250.0000.00816.64
7.4.240.0040.00316.67
7.4.230.0030.00516.62
7.4.220.0090.00916.86
7.4.210.0000.01516.64
7.4.200.0000.00716.72
7.4.160.0070.01016.75
7.4.150.0090.00817.40
7.4.140.0150.00617.86
7.4.130.0100.00716.65
7.4.120.0100.01016.61
7.4.110.0110.00816.67
7.4.100.0110.00716.81
7.4.90.0170.00016.77
7.4.80.0030.01419.39
7.4.70.0080.00916.66
7.4.60.0060.01016.79
7.4.50.0040.00416.44
7.4.40.0070.01016.69
7.4.30.0130.00716.76
7.4.00.0000.01015.38
7.3.330.0070.00013.41
7.3.320.0060.00013.46
7.3.310.0030.00316.45
7.3.300.0030.00316.41
7.3.290.0080.00716.42
7.3.280.0090.01016.37
7.3.270.0050.01117.40
7.3.260.0100.01016.54
7.3.250.0150.00516.47
7.3.240.0150.00416.52
7.3.230.0160.00316.75
7.3.210.0100.01016.68
7.3.200.0060.01516.47
7.3.190.0080.00816.36
7.3.180.0090.00616.65
7.3.170.0100.00716.59
7.3.160.0120.00916.66
7.2.330.0070.01116.77
7.2.320.0130.00316.77
7.2.310.0130.00416.66
7.2.300.0120.00616.77
7.2.290.0110.00816.72
7.2.60.0030.01217.29
7.2.00.0000.01519.35
7.1.200.0000.01115.70
7.1.100.0070.01018.50
7.1.70.0000.00817.34
7.1.60.0070.01419.27
7.1.50.0100.00617.14
7.1.00.0070.07322.38
7.0.200.0050.00516.93
7.0.60.0070.03720.03
7.0.50.0070.08017.88
7.0.40.0030.08020.23
7.0.30.0200.06020.12
7.0.20.0230.06320.32
7.0.10.0100.04020.11
7.0.00.0130.04320.07
5.6.280.0030.06321.08
5.6.210.0070.04320.72
5.6.200.0030.04018.25
5.6.190.0130.07320.55
5.6.180.0100.05720.48
5.6.170.0200.04020.44
5.6.160.0030.09020.50
5.6.150.0130.07318.12
5.6.140.0100.08018.28
5.6.130.0100.05018.17
5.6.120.0030.05020.97
5.6.110.0000.09321.12
5.6.100.0130.06021.10
5.6.90.0070.06320.93
5.6.80.0070.03720.50
5.5.350.0070.08020.34
5.5.340.0030.05718.09
5.5.330.0070.09020.47
5.5.320.0000.04320.27
5.5.310.0330.07320.35
5.5.300.0070.08017.93
5.5.290.0070.07718.07
5.5.280.0130.07720.85
5.5.270.0070.08720.80
5.5.260.0170.07720.68
5.5.250.0100.07020.59
5.5.240.0330.07020.14
5.4.450.0870.07719.48
5.4.440.0930.07019.30
5.4.430.0730.05719.54
5.4.420.0800.08019.57
5.4.410.0770.06319.34
5.4.400.0730.05318.98
5.4.390.0670.06319.22
5.4.380.0870.05719.13
5.4.370.0700.06319.06
5.4.360.0630.08319.25
5.4.350.0700.05719.29
5.4.340.0930.06319.34
5.4.320.0870.04718.84
5.4.310.0800.05018.80
5.4.300.0770.04719.13
5.4.290.0730.05319.24
5.4.280.0700.05719.22
5.4.270.0730.05318.84
5.4.260.0500.06019.22
5.4.250.0530.05319.24
5.4.240.0530.06019.14
5.4.230.0600.05019.12
5.4.220.0630.05018.87
5.4.210.0800.06319.12
5.4.200.0700.04719.29
5.4.190.0830.06019.21
5.4.180.0730.05718.96
5.4.170.0630.06319.21
5.4.160.0570.05718.82
5.4.150.0630.05319.00
5.4.140.0670.06316.30
5.4.130.0830.05016.39
5.4.120.0700.05716.55
5.4.110.0770.04716.45
5.4.100.0730.07016.28
5.4.90.0700.04716.60
5.4.80.0630.05716.61
5.4.70.0030.06716.52
5.4.60.0000.03716.23
5.4.50.0000.07016.42
5.4.40.0200.08316.49
5.4.30.0270.07016.42
5.4.20.0230.03716.52

preferences:
44.63 ms | 401 KiB | 5 Q