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)
8.3.70.0090.00618.68
8.3.60.0150.00718.29
8.3.50.0110.01021.29
8.3.40.0140.00719.00
8.3.30.0060.00918.70
8.3.20.0060.00320.39
8.3.10.0070.00021.75
8.3.00.0080.00018.04
8.2.190.0090.00618.41
8.2.180.0170.00317.00
8.2.170.0130.00622.96
8.2.160.0110.01120.39
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0050.00326.16
8.2.120.0040.00417.50
8.2.110.0060.00320.56
8.2.100.0130.00017.84
8.2.90.0080.00017.87
8.2.80.0040.00417.97
8.2.70.0040.00418.04
8.2.60.0040.00418.22
8.2.50.0040.00418.10
8.2.40.0040.00419.21
8.2.30.0000.00720.72
8.2.20.0040.00417.79
8.2.10.0070.00018.27
8.2.00.0040.00418.02
8.1.280.0150.00325.92
8.1.270.0080.00022.20
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0030.00622.32
8.1.230.0080.00317.70
8.1.220.0030.00517.78
8.1.210.0040.00418.77
8.1.200.0070.00317.47
8.1.190.0000.00817.35
8.1.180.0040.00418.10
8.1.170.0040.00418.91
8.1.160.0000.00721.96
8.1.150.0050.00318.91
8.1.140.0000.00817.49
8.1.130.0050.00317.65
8.1.120.0000.00717.61
8.1.110.0000.00717.60
8.1.100.0040.00417.64
8.1.90.0060.00317.53
8.1.80.0040.00417.68
8.1.70.0050.00317.61
8.1.60.0000.00817.80
8.1.50.0040.00417.75
8.1.40.0050.00317.71
8.1.30.0030.00517.81
8.1.20.0040.00417.88
8.1.10.0040.00417.74
8.1.00.0030.00517.68
8.0.300.0000.00719.82
8.0.290.0030.00516.88
8.0.280.0000.00718.50
8.0.270.0030.00317.34
8.0.260.0030.00317.17
8.0.250.0020.00517.01
8.0.240.0000.00717.09
8.0.230.0030.00317.09
8.0.220.0070.00017.02
8.0.210.0050.00217.02
8.0.200.0060.00017.09
8.0.190.0090.00017.07
8.0.180.0040.00416.95
8.0.170.0040.00417.03
8.0.160.0000.00816.95
8.0.150.0000.00817.07
8.0.140.0000.00716.96
8.0.130.0000.00713.42
8.0.120.0030.00516.96
8.0.110.0020.00516.87
8.0.100.0070.00016.89
8.0.90.0050.00216.91
8.0.80.0060.00817.00
8.0.70.0000.00717.08
8.0.60.0050.00216.95
8.0.50.0000.00717.11
8.0.30.0110.00817.17
8.0.20.0110.01117.40
8.0.10.0000.00717.04
8.0.00.0110.00816.81
7.4.330.0020.00215.08
7.4.320.0070.00016.77
7.4.300.0000.00716.81
7.4.290.0000.00716.63
7.4.280.0000.00716.80
7.4.270.0030.00316.84
7.4.260.0000.00716.84
7.4.250.0050.00316.70
7.4.240.0040.00316.70
7.4.230.0000.00716.82
7.4.220.0110.00716.77
7.4.210.0070.00716.68
7.4.200.0030.00316.90
7.4.160.0070.01016.86
7.4.150.0180.00017.40
7.4.140.0060.01417.86
7.4.130.0100.00616.76
7.4.120.0080.01016.66
7.4.110.0170.00716.75
7.4.100.0060.01216.62
7.4.90.0090.01516.70
7.4.80.0100.01019.39
7.4.70.0060.01016.76
7.4.60.0100.00616.59
7.4.50.0000.00916.89
7.4.40.0150.00316.71
7.4.30.0150.00416.60
7.4.00.0070.00415.04
7.3.330.0040.00413.45
7.3.320.0030.00313.43
7.3.310.0070.00016.55
7.3.300.0000.00716.50
7.3.290.0080.00716.35
7.3.280.0150.00316.39
7.3.270.0030.01317.40
7.3.260.0190.00316.68
7.3.250.0100.00816.56
7.3.240.0110.00616.76
7.3.230.0090.00916.63
7.3.210.0130.00916.56
7.3.200.0120.01116.48
7.3.190.0110.00716.41
7.3.180.0040.01216.74
7.3.170.0110.01116.49
7.3.160.0140.00316.48
7.2.330.0100.00716.82
7.2.320.0150.00317.00
7.2.310.0030.01316.65
7.2.300.0170.00016.97
7.2.290.0120.00616.75
7.2.60.0080.00416.88
7.2.00.0070.00719.49
7.1.200.0060.00616.00
7.1.100.0060.00618.23
7.1.70.0030.00517.39
7.1.60.0080.00419.27
7.1.50.0030.01317.18
7.1.00.0070.07322.49
7.0.200.0030.00516.89
7.0.60.0130.08019.96
7.0.50.0000.05017.90
7.0.40.0030.07720.13
7.0.30.0230.03320.10
7.0.20.0200.06020.27
7.0.10.0070.07720.31
7.0.00.0070.08020.27
5.6.280.0030.05321.03
5.6.210.0230.06020.72
5.6.200.0070.03718.13
5.6.190.0030.08320.48
5.6.180.0230.08320.55
5.6.170.0330.06720.43
5.6.160.0070.08720.54
5.6.150.0070.08318.23
5.6.140.0130.03318.24
5.6.130.0100.07318.15
5.6.120.0070.04020.90
5.6.110.0000.09720.99
5.6.100.0100.06720.90
5.6.90.0070.07020.98
5.6.80.0030.08320.54
5.5.350.0030.04320.47
5.5.340.0070.06017.98
5.5.330.0070.07320.40
5.5.320.0400.07020.33
5.5.310.0230.06320.23
5.5.300.0130.04318.07
5.5.290.0070.07317.96
5.5.280.0000.05020.98
5.5.270.0100.03720.65
5.5.260.0070.08320.73
5.5.250.0000.08720.70
5.5.240.0200.07720.26
5.4.450.0270.05719.46
5.4.440.0270.05319.55
5.4.430.0270.05019.46
5.4.420.0200.05719.57
5.4.410.0300.04319.18
5.4.400.0300.04719.35
5.4.390.0200.05719.29
5.4.380.0200.05319.18
5.4.370.0270.04719.14
5.4.360.0200.05719.29
5.4.350.0270.05018.98
5.4.340.0300.04719.12
5.4.320.0270.07019.34
5.4.310.0200.06319.13
5.4.300.0300.05719.22
5.4.290.0370.05719.22
5.4.280.0330.06318.86
5.4.270.0300.06319.01
5.4.260.0270.07019.00
5.4.250.0300.07019.13
5.4.240.0270.06719.21
5.4.230.0130.05718.83
5.4.220.0170.07719.21
5.4.210.0230.08019.21
5.4.200.0300.06019.12
5.4.190.0300.06319.23
5.4.180.0170.08018.83
5.4.170.0300.06319.21
5.4.160.0230.07019.11
5.4.150.0400.05719.27
5.4.140.0200.07016.34
5.4.130.0200.05016.29
5.4.120.0170.04716.40
5.4.110.0170.06316.64
5.4.100.0230.04716.60
5.4.90.0230.04716.56
5.4.80.0170.05316.44
5.4.70.0000.07316.52
5.4.60.0030.03316.53
5.4.50.0030.07716.43
5.4.40.0330.04716.48
5.4.30.0300.04016.56
5.4.20.0300.06016.48

preferences:
46.36 ms | 401 KiB | 5 Q