3v4l.org

run code in 300+ PHP versions simultaneously
<?php function _convertToCamelCase(array $matches) { return ucfirst($matches[1]); } $key = 'valami_underscored_cucc'; echo preg_replace_callback( '/_(\w)/', array('_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)
8.3.60.0190.00018.43
8.3.50.0150.00521.96
8.3.40.0120.00318.89
8.3.30.0030.01419.09
8.3.20.0000.00820.16
8.3.10.0050.00320.61
8.3.00.0080.00019.55
8.2.180.0070.00716.73
8.2.170.0090.00622.96
8.2.160.0100.00320.32
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00422.05
8.2.110.0040.00422.00
8.2.100.0100.00020.47
8.2.90.0040.00418.92
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0070.00317.91
8.2.50.0080.00018.07
8.2.40.0000.00718.20
8.2.30.0000.00819.30
8.2.20.0050.00317.68
8.2.10.0050.00318.11
8.2.00.0080.00017.75
8.1.280.0080.00825.92
8.1.270.0040.00422.01
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0060.00322.20
8.1.230.0070.00419.00
8.1.220.0040.00417.74
8.1.210.0030.00518.77
8.1.200.0040.00417.23
8.1.190.0000.00917.23
8.1.180.0050.00218.10
8.1.170.0070.00418.52
8.1.160.0070.00021.95
8.1.150.0000.00718.80
8.1.140.0040.00417.34
8.1.130.0040.00417.89
8.1.120.0040.00417.32
8.1.110.0050.00217.44
8.1.100.0000.00717.33
8.1.90.0030.00417.45
8.1.80.0000.00717.32
8.1.70.0030.00317.40
8.1.60.0000.00717.47
8.1.50.0080.00017.41
8.1.40.0000.01017.35
8.1.30.0080.00017.48
8.1.20.0000.00817.73
8.1.10.0000.00817.57
8.1.00.0040.00417.51
8.0.300.0040.00418.77
8.0.290.0040.00416.63
8.0.280.0000.00718.32
8.0.270.0030.00316.89
8.0.260.0000.00617.19
8.0.250.0000.00716.99
8.0.240.0000.00616.93
8.0.230.0040.00416.93
8.0.220.0030.00316.91
8.0.210.0000.00716.89
8.0.200.0030.00317.00
8.0.190.0050.00316.93
8.0.180.0040.00416.88
8.0.170.0070.00016.93
8.0.160.0040.00416.89
8.0.150.0000.00716.86
8.0.140.0000.01016.75
8.0.130.0030.00313.29
8.0.120.0040.00416.85
8.0.110.0040.00416.78
8.0.100.0030.00516.80
8.0.90.0080.00016.94
8.0.80.0080.00816.91
8.0.70.0040.00416.89
8.0.60.0050.00316.97
8.0.50.0000.00716.77
8.0.30.0070.01117.08
8.0.20.0150.00717.40
8.0.10.0040.00417.05
8.0.00.0070.01216.79
7.4.330.0060.00015.00
7.4.320.0040.00416.56
7.4.300.0000.00616.45
7.4.290.0000.00716.46
7.4.280.0070.00016.53
7.4.270.0030.00316.53
7.4.260.0040.00416.54
7.4.250.0070.00016.30
7.4.240.0030.00316.57
7.4.230.0000.00716.24
7.4.220.0050.02116.48
7.4.210.0090.00616.54
7.4.200.0000.00716.56
7.4.160.0120.00316.38
7.4.150.0060.01217.40
7.4.140.0100.01017.86
7.4.130.0120.00716.45
7.4.120.0050.01116.49
7.4.110.0060.00916.44
7.4.100.0070.01016.59
7.4.90.0110.00716.52
7.4.80.0030.01416.49
7.4.70.0070.01716.58
7.4.60.0120.00416.45
7.4.50.0030.00516.31
7.4.40.0000.01616.59
7.4.30.0060.01016.54
7.4.00.0000.01714.70
7.3.330.0030.00313.07
7.3.320.0050.00013.25
7.3.310.0000.00716.23
7.3.300.0070.00016.16
7.3.290.0030.01516.26
7.3.280.0100.00716.22
7.3.270.0160.00917.40
7.3.260.0060.01116.35
7.3.250.0100.00716.27
7.3.240.0060.01316.31
7.3.230.0070.01216.39
7.3.210.0170.00416.32
7.3.200.0060.01519.39
7.3.190.0100.01316.51
7.3.180.0060.00916.40
7.3.170.0140.00716.42
7.3.160.0070.01416.36
7.2.330.0060.01116.71
7.2.320.0090.00616.52
7.2.310.0060.01016.37
7.2.300.0030.01416.51
7.2.290.0110.00616.41
7.2.60.0160.00516.52
7.1.200.0000.01215.82
7.1.100.0060.00617.96
7.1.70.0000.00716.92
7.1.60.0100.01419.32
7.1.50.0100.01416.86
7.1.00.0000.08022.57
7.0.200.0080.00016.67
7.0.140.0030.07022.01
7.0.60.0030.05720.07
7.0.50.0100.04017.94
7.0.40.0000.09320.27
7.0.30.0270.04720.11
7.0.20.0370.07020.09
7.0.10.0070.08720.21
7.0.00.0100.03320.10
5.6.280.0100.07021.07
5.6.210.0100.07720.65
5.6.200.0030.04018.19
5.6.190.0030.08320.61
5.6.180.0330.05020.77
5.6.170.0230.08320.44
5.6.160.0130.07720.46
5.6.150.0100.04718.22
5.6.140.0130.06318.28
5.6.130.0000.04718.14
5.6.120.0100.08020.77
5.6.110.0200.07321.14
5.6.100.0130.05721.03
5.6.90.0100.06021.13
5.6.80.0070.03720.41
5.5.350.0100.03720.50
5.5.340.0100.08017.91
5.5.330.0070.04320.43
5.5.320.0270.04020.42
5.5.310.0230.06020.30
5.5.300.0030.03717.98
5.5.290.0030.04017.93
5.5.280.0130.05020.73
5.5.270.0070.04320.78
5.5.260.0070.05320.88
5.5.250.0130.07320.55
5.5.240.0170.07320.27
5.4.450.0130.05319.31
5.4.440.0770.05319.30
5.4.430.0170.04719.46
5.4.420.0870.04319.15
5.4.410.0700.05019.42
5.4.400.0870.05019.25
5.4.390.1030.04319.16
5.4.380.0270.06318.53
5.4.370.0330.05318.70
5.4.360.0230.06018.58
5.4.350.0330.07318.73
5.4.340.0530.06018.46
5.4.320.0060.03712.50
5.4.310.0080.04412.50
5.4.300.0090.05112.50
5.4.290.0060.04612.50
5.4.280.0130.03312.40
5.4.270.0040.04512.39
5.4.260.0060.03912.40
5.4.250.0070.04012.40
5.4.240.0070.03712.40
5.4.230.0100.03512.39
5.4.220.0060.03712.39
5.4.210.0080.03612.39
5.4.200.0110.03312.39
5.4.190.0060.03912.39
5.4.180.0050.04112.38
5.4.170.0070.03712.39
5.4.160.0080.03912.39
5.4.150.0100.03612.39
5.4.140.0070.03812.07
5.4.130.0090.03812.05
5.4.120.0060.05112.02
5.4.110.0140.04312.02
5.4.100.0100.04212.01
5.4.90.0030.03912.01
5.4.80.0040.03712.01
5.4.70.0080.03712.01
5.4.60.0070.04612.01
5.4.50.0090.04112.01
5.4.40.0090.03312.00
5.4.30.0030.04311.99
5.4.20.0100.03811.99
5.4.10.0060.04411.99
5.4.00.0040.03911.48
5.3.290.0100.03712.80
5.3.280.0090.04512.71
5.3.270.0090.03512.72
5.3.260.0080.05312.71
5.3.250.0060.03912.72
5.3.240.0070.03612.72
5.3.230.0070.04312.71
5.3.220.0050.04012.68
5.3.210.0060.03912.68
5.3.200.0040.03812.68
5.3.190.0060.03812.68
5.3.180.0080.04212.67
5.3.170.0080.04012.67
5.3.160.0060.03612.67
5.3.150.0100.04912.68
5.3.140.0060.05112.66
5.3.130.0080.04912.65
5.3.120.0080.04612.66
5.3.110.0060.03912.66
5.3.100.0080.05012.12
5.3.90.0030.04012.10
5.3.80.0070.03612.09
5.3.70.0060.04312.09
5.3.60.0060.04712.07
5.3.50.0070.04412.02
5.3.40.0070.03712.02
5.3.30.0020.03911.98
5.3.20.0060.03511.76
5.3.10.0080.03811.73
5.3.00.0080.04211.71
5.2.170.0090.0289.21
5.2.160.0040.0479.22
5.2.150.0050.0339.22
5.2.140.0060.0429.21
5.2.130.0030.0329.18
5.2.120.0020.0309.18
5.2.110.0050.0389.18
5.2.100.0030.0299.17
5.2.90.0080.0329.17
5.2.80.0040.0329.17
5.2.70.0040.0439.17
5.2.60.0040.0339.12
5.2.50.0040.0299.09
5.2.40.0070.0309.07
5.2.30.0040.0379.04
5.2.20.0070.0299.03
5.2.10.0070.0288.94
5.2.00.0080.0318.80
5.1.60.0020.0288.09
5.1.50.0070.0338.08
5.1.40.0050.0248.06
5.1.30.0020.0308.41
5.1.20.0040.0278.43
5.1.10.0070.0268.16
5.1.00.0010.0338.16
5.0.50.0050.0196.64
5.0.40.0030.0216.50
5.0.30.0040.0356.31
5.0.20.0030.0226.29
5.0.10.0020.0206.25
5.0.00.0030.0386.24
4.4.90.0030.0174.78
4.4.80.0020.0154.75
4.4.70.0050.0254.76
4.4.60.0010.0234.76
4.4.50.0030.0154.77
4.4.40.0020.0254.71
4.4.30.0020.0204.76
4.4.20.0030.0214.85
4.4.10.0040.0154.85
4.4.00.0040.0264.76
4.3.110.0030.0184.67
4.3.100.0030.0144.66
4.3.90.0010.0234.64
4.3.80.0040.0234.58
4.3.70.0010.0154.63
4.3.60.0050.0204.63
4.3.50.0020.0164.63
4.3.40.0040.0264.53
4.3.30.0020.0153.30
4.3.20.0030.0223.28
4.3.10.0030.0163.23
4.3.00.0000.0276.76

preferences:
46.37 ms | 401 KiB | 5 Q