3v4l.org

run code in 300+ PHP versions simultaneously
<?php $subject = 'Aaaafaba Bbab'; $ret = preg_replace_callback( '~[a]+~i', function ($match) { var_dump($match); echo strlen($match[0]), ' matches for "a" found', PHP_EOL; }, $subject ); var_dump($ret); var_dump($subject); $ret = preg_replace_callback_array( [ '~[a]+~i' => function ($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)
8.3.60.0000.01618.64
8.3.50.0110.01121.17
8.3.40.0120.00318.91
8.3.30.0090.00618.75
8.3.20.0060.00320.33
8.3.10.0040.00421.85
8.3.00.0040.00418.05
8.2.180.0110.00716.63
8.2.170.0120.00322.96
8.2.160.0100.00720.39
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0030.00617.88
8.2.110.0030.00622.20
8.2.100.0070.00419.77
8.2.90.0000.00819.22
8.2.80.0060.00317.97
8.2.70.0060.00317.88
8.2.60.0040.00417.91
8.2.50.0040.00418.07
8.2.40.0040.00419.27
8.2.30.0050.00220.65
8.2.20.0040.00417.81
8.2.10.0060.00318.26
8.2.00.0050.00318.15
8.1.280.0160.00325.92
8.1.270.0120.00322.05
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00322.52
8.1.230.0070.00717.48
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0000.01017.48
8.1.190.0080.00017.47
8.1.180.0030.00618.10
8.1.170.0060.00318.78
8.1.160.0040.00422.01
8.1.150.0040.00418.91
8.1.140.0030.00517.57
8.1.130.0000.00717.79
8.1.120.0070.00017.61
8.1.110.0080.00017.51
8.1.100.0000.00717.58
8.1.90.0110.00017.57
8.1.80.0040.00417.61
8.1.70.0030.00317.53
8.1.60.0000.00817.76
8.1.50.0060.00317.56
8.1.40.0000.00817.74
8.1.30.0000.00817.72
8.1.20.0000.00717.83
8.1.10.0030.00517.74
8.1.00.0060.00317.67
8.0.300.0000.00818.77
8.0.290.0000.00816.75
8.0.280.0000.00718.45
8.0.270.0050.00317.19
8.0.260.0000.00717.26
8.0.250.0000.00717.12
8.0.240.0000.00717.09
8.0.230.0040.00417.07
8.0.220.0070.00016.93
8.0.210.0040.00416.94
8.0.200.0070.00017.16
8.0.190.0030.00616.98
8.0.180.0040.00417.05
8.0.170.0040.00417.01
8.0.160.0000.00717.11
8.0.150.0040.00416.96
8.0.140.0040.00316.96
8.0.130.0000.00613.50
8.0.120.0040.00416.89
8.0.110.0040.00416.87
8.0.100.0000.00817.04
8.0.90.0000.00716.86
8.0.80.0090.00617.04
8.0.70.0000.00717.04
8.0.60.0000.00716.92
8.0.50.0040.00417.02
8.0.30.0080.01117.24
8.0.20.0100.01217.40
8.0.10.0000.00717.18
8.0.00.0070.01116.84
7.4.330.0020.00215.16
7.4.320.0000.00716.83
7.4.300.0030.00316.70
7.4.290.0030.00316.82
7.4.280.0000.01016.81
7.4.270.0030.00516.81
7.4.260.0000.00816.70
7.4.250.0000.00716.73
7.4.240.0040.00416.69
7.4.230.0050.00316.91
7.4.220.0170.01216.78
7.4.210.0070.01316.67
7.4.200.0070.00016.83
7.4.160.0040.01216.62
7.4.150.0090.01217.40
7.4.140.0140.00517.86
7.4.130.0130.00716.86
7.4.120.0070.01216.61
7.4.110.0150.00316.71
7.4.100.0170.00716.61
7.4.90.0000.01716.63
7.4.80.0100.00719.39
7.4.70.0070.01016.82
7.4.60.0090.00616.66
7.4.50.0000.00416.84
7.4.40.0170.00016.58
7.4.30.0270.01516.70
7.4.10.0070.01115.25
7.4.00.0080.00815.07
7.3.330.0000.00813.41
7.3.320.0000.00513.22
7.3.310.0070.00016.44
7.3.300.0000.00716.31
7.3.290.0070.00716.39
7.3.280.0070.01016.38
7.3.270.0120.00617.40
7.3.260.0100.01716.44
7.3.250.0140.00416.44
7.3.240.0000.01816.48
7.3.230.0120.01216.59
7.3.210.0100.01616.61
7.3.200.0100.00716.68
7.3.190.0070.01116.70
7.3.180.0100.00716.57
7.3.170.0000.01616.46
7.3.160.0110.00616.61
7.3.130.0060.01014.87
7.3.120.0080.00914.89
7.3.110.0080.01014.84
7.3.100.0090.00314.85
7.3.90.0050.00814.89
7.3.80.0030.01014.95
7.3.70.0030.00914.86
7.3.60.0080.00514.71
7.3.50.0030.01414.85
7.3.40.0040.01014.67
7.3.30.0060.00915.01
7.3.20.0110.00316.55
7.3.10.0080.00616.64
7.3.00.0080.00616.68
7.2.330.0060.01316.85
7.2.320.0110.00716.81
7.2.310.0080.00817.03
7.2.300.0170.00016.85
7.2.290.0090.00916.75
7.2.260.0100.00715.36
7.2.250.0080.01014.93
7.2.240.0050.01314.93
7.2.230.0050.01015.23
7.2.220.0030.01215.33
7.2.210.0030.00815.24
7.2.200.0060.00615.31
7.2.190.0050.00815.29
7.2.180.0050.01015.23
7.2.170.0040.01015.29
7.2.160.0100.00315.36
7.2.150.0070.01116.93
7.2.140.0070.00317.30
7.2.130.0040.01117.15
7.2.120.0070.01117.07
7.2.110.0110.00717.10
7.2.100.0000.01217.14
7.2.90.0030.00617.28
7.2.80.0030.01017.23
7.2.70.0070.01017.20
7.2.60.0050.01217.09
7.2.50.0000.01417.36
7.2.40.0040.01117.20
7.2.30.0030.00717.12
7.2.20.0000.01517.25
7.2.10.0080.00417.17
7.2.00.0020.01118.39
7.1.330.0030.01215.89
7.1.320.0050.00615.79
7.1.310.0060.00915.95
7.1.300.0050.01115.84
7.1.290.0060.00615.66
7.1.280.0060.00615.90
7.1.270.0080.00715.92
7.1.260.0090.00216.04
7.1.250.0090.00315.62
7.1.240.0040.01515.79
7.1.230.0070.01015.91
7.1.220.0000.01316.13
7.1.210.0030.00915.88
7.1.200.0080.00615.86
7.1.190.0070.00716.04
7.1.180.0030.01215.98
7.1.170.0060.00815.91
7.1.160.0060.00716.01
7.1.150.0060.00915.83
7.1.140.0060.00615.90
7.1.130.0040.01116.10
7.1.120.0120.00315.96
7.1.110.0070.01115.82
7.1.100.0030.00917.17
7.1.90.0120.00316.03
7.1.80.0120.00216.13
7.1.70.0070.00816.78
7.1.60.0070.00617.65
7.1.50.0090.00916.44
7.1.40.0080.00615.83
7.1.30.0060.00915.87
7.1.20.0070.01115.71
7.1.10.0040.00815.68
7.1.00.0080.03819.06
7.0.330.0000.00915.53
7.0.320.0030.00615.59
7.0.310.0030.01015.43
7.0.300.0030.00615.21
7.0.290.0070.00715.32
7.0.280.0060.00915.53
7.0.270.0030.01015.34
7.0.260.0000.00915.66
7.0.250.0120.00315.64
7.0.240.0040.00815.48
7.0.230.0030.01015.64
7.0.220.0100.00715.25
7.0.210.0070.01015.46
7.0.200.0070.00415.96
7.0.190.0090.00615.42
7.0.180.0040.01115.59
7.0.170.0040.01215.55
7.0.160.0030.00915.45
7.0.150.0090.00615.61
7.0.140.0040.01115.79
7.0.130.0030.01015.53
7.0.120.0090.00315.35
7.0.110.0040.01115.69
7.0.100.0070.00715.23
7.0.90.0030.00615.63
7.0.80.0030.01315.38
7.0.70.0000.01415.44
7.0.60.0190.03317.73
7.0.50.0050.05616.83
7.0.40.0080.02516.91
7.0.30.0270.03816.95
7.0.20.0120.02916.91
7.0.10.0080.04516.85
7.0.00.0080.03016.89
5.6.400.0050.00514.67
5.6.390.0080.00614.35
5.6.380.0030.00714.71
5.6.370.0060.00614.07
5.6.360.0000.01214.07
5.6.350.0070.00714.63
5.6.340.0030.00814.22
5.6.330.0000.00814.42
5.6.320.0060.01214.18
5.6.310.0110.00014.31
5.6.300.0070.00714.63
5.6.290.0040.01114.36
5.6.280.0080.03717.64
5.6.270.0030.00914.45
5.6.260.0060.00914.61
5.6.250.0040.01114.47
5.6.240.0090.00614.38
5.6.230.0080.00614.52
5.6.220.0110.00414.79
5.6.210.0050.04817.60
5.6.200.0070.02416.40
5.6.190.0100.04517.54
5.6.180.0160.03317.34
5.6.170.0180.03617.58
5.6.160.0030.02317.51
5.6.150.0090.04216.33
5.6.140.0090.03916.30
5.6.130.0030.02416.29
5.6.120.0070.04817.73
5.6.110.0070.02317.68
5.6.100.0160.04017.82
5.6.90.0060.04617.88
5.6.80.0090.03717.46
5.6.70.0040.01114.38
5.6.60.0120.00414.23
5.6.50.0000.01314.42
5.6.40.0100.00714.72
5.6.30.0070.00714.23
5.6.20.0130.00014.43
5.6.10.0070.00714.61
5.6.00.0070.00714.53
5.5.380.0070.01014.25
5.5.370.0000.01214.18
5.5.360.0060.00914.33
5.5.350.2050.01817.40
5.5.340.0050.04316.25
5.5.330.0030.04917.33
5.5.320.0120.04517.13
5.5.310.0170.04317.52
5.5.300.0050.02316.22
5.5.290.0090.04015.98
5.5.280.0080.04717.82
5.5.270.0070.04417.49
5.5.260.0030.04117.69
5.5.250.0140.04417.56
5.5.240.0170.03717.33
5.5.230.0070.00714.23
5.5.220.0060.00914.47
5.5.210.0030.01014.42
5.5.200.0090.00614.15
5.5.190.0070.00714.20
5.5.180.0130.00314.10
5.5.170.0070.01014.30
5.5.160.0090.00914.24
5.5.150.0100.00714.09
5.5.140.0000.01214.18
5.5.130.0040.00914.29
5.5.120.0060.00914.52
5.5.110.0040.01514.14
5.5.100.0120.00614.34
5.5.90.0000.01814.05
5.5.80.0030.01314.53
5.5.70.0120.00614.20
5.5.60.0140.00314.23
5.5.50.0060.00613.99
5.5.40.0030.00914.06
5.5.30.0100.00313.93
5.5.20.0060.01014.25
5.5.10.0000.01514.36
5.5.00.0060.01214.13
5.4.450.0330.03315.64
5.4.440.0480.02215.72
5.4.430.0520.03015.68
5.4.420.0400.02615.60
5.4.410.0470.02815.47
5.4.400.0400.03115.55
5.4.390.0390.03115.46
5.4.380.0370.03015.47
5.4.370.0420.02815.48
5.4.360.0400.03815.47
5.4.350.0390.03015.58
5.4.340.0370.02815.58
5.4.330.0030.01011.81
5.4.320.0380.03215.52
5.4.310.0450.02815.41
5.4.300.0400.03515.47
5.4.290.0420.03215.48
5.4.280.0400.03515.47
5.4.270.0350.02915.47
5.4.260.0340.04115.52
5.4.250.0370.03515.53
5.4.240.0440.02615.57
5.4.230.0350.03315.43
5.4.220.0400.02915.46
5.4.210.0370.02815.41
5.4.200.0320.03015.46
5.4.190.0350.03515.32
5.4.180.0370.02515.55
5.4.170.0370.03815.47
5.4.160.0350.02515.51
5.4.150.0400.02815.51
5.4.140.0420.02514.14
5.4.130.0370.02814.17
5.4.120.0340.02714.20
5.4.110.0380.02814.24
5.4.100.0320.02714.19
5.4.90.0270.03014.24
5.4.80.0350.03114.24
5.4.70.0020.04314.11
5.4.60.0070.02614.17
5.4.50.0020.03514.03
5.4.40.0120.04214.12
5.4.30.0160.03913.98
5.4.20.0190.03214.16
5.4.10.0060.00311.81
5.4.00.0030.00611.81

preferences:
49.7 ms | 401 KiB | 5 Q