3v4l.org

run code in 300+ PHP versions simultaneously
<?php function _convertToCamelCase(array $matches) { return ucfirst($matches[1]); } $key = 'valami_underscored_cucc'; $keys = array( 'valami_underscored_cucc', 'valami_underscored_cucc', 'valami_underscored_cucc', 'valami_underscored_cucc', 'valami_underscored_cucc', 'valami_underscored_cucc', 'valami_underscored_cucc', 'valami_underscored_cucc', 'valami_underscored_cucc', 'valami_underscored_cucc', ); foreach ($keys as $key) { echo preg_replace_callback( '/_(\w)/', '_convertToCamelCase', $key); }

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)
8.3.60.0060.00918.68
8.3.50.0070.01018.11
8.3.40.0150.00318.96
8.3.30.0150.00319.09
8.3.20.0070.00020.29
8.3.10.0000.00820.55
8.3.00.0000.00819.66
8.2.180.0110.00716.88
8.2.170.0060.00922.96
8.2.160.0000.01520.35
8.2.150.0050.00224.18
8.2.140.0040.00424.66
8.2.130.0030.00626.16
8.2.120.0050.00222.18
8.2.110.0040.00422.20
8.2.100.0080.00417.80
8.2.90.0080.00018.91
8.2.80.0080.00017.97
8.2.70.0000.00917.75
8.2.60.0000.00817.80
8.2.50.0000.00818.07
8.2.40.0060.00318.16
8.2.30.0040.00419.13
8.2.20.0050.00217.82
8.2.10.0000.00818.16
8.2.00.0060.00317.77
8.1.270.0030.00623.83
8.1.260.0050.00526.35
8.1.250.0040.00428.09
8.1.240.0040.00423.79
8.1.230.0110.00019.04
8.1.220.0060.00317.74
8.1.210.0000.00918.77
8.1.200.0120.00017.36
8.1.190.0030.00517.47
8.1.180.0050.00318.10
8.1.170.0110.00018.83
8.1.160.0040.00421.94
8.1.150.0070.00018.91
8.1.140.0000.00717.60
8.1.130.0030.00317.83
8.1.120.0040.00417.51
8.1.110.0000.00717.59
8.1.100.0030.00317.56
8.1.90.0040.00317.53
8.1.80.0000.00717.63
8.1.70.0000.00817.56
8.1.60.0000.00817.73
8.1.50.0050.00317.66
8.1.40.0000.00917.58
8.1.30.0060.00317.67
8.1.20.0090.00017.69
8.1.10.0000.00717.81
8.1.00.0000.00817.63
8.0.300.0040.00419.14
8.0.290.0080.00016.88
8.0.280.0030.00318.50
8.0.270.0040.00417.27
8.0.260.0000.00817.23
8.0.250.0030.00317.13
8.0.240.0030.00316.99
8.0.230.0060.00017.02
8.0.220.0030.00317.04
8.0.210.0070.00017.03
8.0.200.0030.00316.95
8.0.190.0050.00316.97
8.0.180.0000.00717.11
8.0.170.0000.00717.07
8.0.160.0000.00717.02
8.0.150.0000.00716.91
8.0.140.0070.00316.91
8.0.130.0050.00013.47
8.0.120.0050.00316.99
8.0.110.0070.00017.05
8.0.100.0000.00717.05
8.0.90.0040.00416.98
8.0.80.0100.00716.98
8.0.70.0040.00417.10
8.0.60.0040.00416.91
8.0.50.0000.00717.09
8.0.30.0060.01217.39
8.0.20.0100.01317.40
8.0.10.0050.00317.14
8.0.00.0090.01216.99
7.4.330.0020.00215.15
7.4.320.0030.00616.63
7.4.300.0000.00716.73
7.4.290.0070.00016.73
7.4.280.0040.00416.79
7.4.270.0000.00716.78
7.4.260.0050.00316.69
7.4.250.0070.00016.69
7.4.240.0050.00316.67
7.4.230.0050.00316.59
7.4.220.0060.01316.89
7.4.210.0030.01316.75
7.4.200.0080.00016.80
7.4.160.0170.00016.46
7.4.150.0090.00917.40
7.4.140.0110.01117.86
7.4.130.0100.00916.76
7.4.120.0100.00716.82
7.4.110.0090.00616.61
7.4.100.0030.01516.74
7.4.90.0140.00416.69
7.4.80.0100.01016.79
7.4.70.0100.00616.61
7.4.60.0060.01016.70
7.4.50.0020.00216.43
7.4.40.0100.00616.66
7.4.30.0100.00616.59
7.4.00.0070.01015.10
7.3.330.0000.00513.48
7.3.320.0060.00013.52
7.3.310.0000.00716.61
7.3.300.0000.00716.43
7.3.290.0110.00316.38
7.3.280.0100.00716.42
7.3.270.0120.00617.40
7.3.260.0060.01516.57
7.3.250.0110.01316.75
7.3.240.0120.00816.50
7.3.230.0100.00716.86
7.3.210.0090.00916.45
7.3.200.0070.01019.39
7.3.190.0030.01416.39
7.3.180.0140.00616.84
7.3.170.0110.00716.72
7.3.160.0080.00816.79
7.2.330.0140.00416.78
7.2.320.0030.01316.83
7.2.310.0060.01216.76
7.2.300.0070.01116.72
7.2.290.0110.00516.82
7.1.100.0030.00518.48
7.1.70.0030.00517.20
7.1.60.0100.01419.32
7.1.50.0030.01017.13
7.1.00.0100.07022.34
7.0.200.0040.00817.03
7.0.140.0130.06322.00
7.0.60.0030.08720.02
7.0.50.0100.08017.90
7.0.40.0030.08719.98
7.0.30.0300.05020.26
7.0.20.0270.07320.32
7.0.10.0000.04720.26
7.0.00.0000.04720.21
5.6.280.0070.06721.02
5.6.210.0100.07720.71
5.6.200.0130.06318.14
5.6.190.0030.04720.61
5.6.180.0530.07020.46
5.6.170.0330.05720.51
5.6.160.0100.06020.39
5.6.150.0030.06018.17
5.6.140.0030.08318.22
5.6.130.0100.06318.18
5.6.120.0030.09320.85
5.6.110.0030.08320.99
5.6.100.0070.07320.98
5.6.90.0100.08321.04
5.6.80.0030.06320.51
5.5.350.0070.05020.41
5.5.340.0200.06717.99
5.5.330.0100.07720.21
5.5.320.0200.05020.38
5.5.310.0330.07320.32
5.5.300.0070.05018.05
5.5.290.0070.03717.93
5.5.280.0100.08020.76
5.5.270.0030.04320.75
5.5.260.0070.08720.68
5.5.250.0000.09020.49
5.5.240.0170.06720.07
5.4.450.0100.05719.59
5.4.440.0900.06319.47
5.4.430.0830.06319.70
5.4.420.0500.05319.61
5.4.410.0900.05319.27
5.4.400.0630.06019.15
5.4.390.0800.05019.15
5.4.380.0300.06018.80
5.4.370.0330.05318.50
5.4.360.0430.05018.78
5.4.350.0330.05718.80
5.4.340.0230.05318.79
5.4.320.0090.04012.50
5.4.310.0050.04412.50
5.4.300.0030.03912.50
5.4.290.0040.03912.50
5.4.280.0060.03512.39
5.4.270.0050.03612.39
5.4.260.0070.03512.39
5.4.250.0050.03812.40
5.4.240.0040.03712.40
5.4.230.0060.04212.39
5.4.220.0080.04912.39
5.4.210.0070.04812.39
5.4.200.0070.03712.39
5.4.190.0060.03712.39
5.4.180.0080.04112.39
5.4.170.0070.03512.39
5.4.160.0080.03612.39
5.4.150.0040.04112.38
5.4.140.0030.05212.07
5.4.130.0100.03512.06
5.4.120.0080.03412.01
5.4.110.0080.04312.01
5.4.100.0060.03912.02
5.4.90.0110.03712.01
5.4.80.0050.03812.02
5.4.70.0060.03712.01
5.4.60.0080.04512.00
5.4.50.0080.03512.01
5.4.40.0070.03512.00
5.4.30.0080.03411.99
5.4.20.0090.03411.99
5.4.10.0060.03511.99
5.4.00.0050.03511.48
5.3.290.0070.03912.80
5.3.280.0070.03612.70
5.3.270.0050.04012.72
5.3.260.0110.03612.72
5.3.250.0060.03712.72
5.3.240.0090.03512.72
5.3.230.0070.04712.71
5.3.220.0060.04112.68
5.3.210.0080.03712.68
5.3.200.0080.03512.68
5.3.190.0130.04612.68
5.3.180.0100.03412.67
5.3.170.0100.03912.67
5.3.160.0100.04112.67
5.3.150.0050.03812.68
5.3.140.0040.03812.66
5.3.130.0050.03812.65
5.3.120.0060.03812.66
5.3.110.0060.04212.66
5.3.100.0060.04712.13
5.3.90.0070.03912.11
5.3.80.0060.04712.10
5.3.70.0100.03712.10
5.3.60.0070.03512.09
5.3.50.0080.03312.04
5.3.40.0080.03512.04
5.3.30.0050.03511.99
5.3.20.0070.03411.78
5.3.10.0060.03511.74
5.3.00.0120.03011.73
5.2.170.0090.0339.22
5.2.160.0040.0309.23
5.2.150.0070.0319.23
5.2.140.0090.0339.22
5.2.130.0060.0279.18
5.2.120.0100.0289.19
5.2.110.0050.0369.19
5.2.100.0050.0289.19
5.2.90.0040.0299.18
5.2.80.0030.0319.18
5.2.70.0050.0309.18
5.2.60.0050.0309.14
5.2.50.0070.0309.10
5.2.40.0050.0299.09
5.2.30.0030.0319.06
5.2.20.0090.0309.05
5.2.10.0080.0268.94
5.2.00.0040.0298.80
5.1.60.0040.0248.08
5.1.50.0030.0318.08
5.1.40.0050.0288.07
5.1.30.0030.0358.41
5.1.20.0090.0338.44
5.1.10.0080.0318.16
5.1.00.0050.0358.16
5.0.50.0010.0236.64
5.0.40.0030.0216.50
5.0.30.0020.0346.31
5.0.20.0050.0176.28
5.0.10.0040.0306.25
5.0.00.0050.0396.25
4.4.90.0040.0174.77
4.4.80.0030.0154.76
4.4.70.0040.0144.76
4.4.60.0040.0214.76
4.4.50.0020.0204.77
4.4.40.0040.0284.71
4.4.30.0030.0184.76
4.4.20.0020.0204.84
4.4.10.0020.0274.85
4.4.00.0030.0254.76
4.3.110.0040.0164.67
4.3.100.0070.0144.66
4.3.90.0060.0194.64
4.3.80.0030.0254.59
4.3.70.0030.0224.63
4.3.60.0020.0154.63
4.3.50.0010.0174.63
4.3.40.0040.0274.54
4.3.30.0010.0213.30
4.3.20.0040.0163.29
4.3.10.0030.0203.23
4.3.00.0070.0176.73

preferences:
51.04 ms | 400 KiB | 5 Q