3v4l.org

run code in 300+ PHP versions simultaneously
<?php function underscoreToCamelCase( $string, $first_char_caps = false) { if( $first_char_caps == true ) { $string[0] = strtoupper($string[0]); } $func = create_function('$c', 'return strtoupper($c[1]);'); return preg_replace_callback('/_([a-z])/', $func, $string); } echo underscoreToCamelCase('valami_underscored_cucc');

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)
8.3.60.0040.01618.55
8.3.50.0140.00822.12
8.3.40.0030.01718.84
8.3.30.0070.00719.22
8.3.20.0050.00320.34
8.3.10.0000.00820.48
8.3.00.0080.00018.02
8.2.180.0070.01318.16
8.2.170.0110.00722.96
8.2.160.0130.00020.43
8.2.150.0040.00424.18
8.2.140.0120.00324.66
8.2.130.0040.00426.16
8.2.120.0030.00522.24
8.2.110.0060.00320.35
8.2.100.0110.00018.22
8.2.90.0050.00319.08
8.2.80.0030.00517.97
8.2.70.0040.00717.61
8.2.60.0040.00418.03
8.2.50.0000.00818.07
8.2.40.0050.00218.21
8.2.30.0030.00519.30
8.2.20.0050.00317.87
8.2.10.0090.00018.12
8.2.00.0060.00317.76
8.1.280.0100.01025.92
8.1.270.0040.00422.08
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00324.02
8.1.230.0040.00719.00
8.1.220.0050.00317.74
8.1.210.0000.01118.77
8.1.200.0060.00317.25
8.1.190.0050.00317.35
8.1.180.0060.00318.10
8.1.170.0070.00418.48
8.1.160.0030.00521.93
8.1.150.0040.00418.84
8.1.140.0000.00717.30
8.1.130.0000.00817.77
8.1.120.0000.00717.31
8.1.110.0070.00017.30
8.1.100.0000.00717.39
8.1.90.0000.00717.38
8.1.80.0040.00417.31
8.1.70.0000.00717.40
8.1.60.0000.00717.55
8.1.50.0080.00017.37
8.1.40.0070.00317.34
8.1.30.0040.00417.49
8.1.20.0060.00317.45
8.1.10.0040.00417.41
8.1.00.0040.00417.35
8.0.300.0040.00418.77
8.0.290.0080.00016.88
8.0.280.0070.00018.52
8.0.270.0000.00717.27
8.0.260.0000.00617.27
8.0.250.0000.00716.94
8.0.240.0030.00317.01
8.0.230.0030.00316.99
8.0.220.0000.00716.92
8.0.210.0000.00716.95
8.0.200.0030.00317.03
8.0.190.0040.00416.92
8.0.180.0050.00216.89
8.0.170.0000.00817.03
8.0.160.0000.00716.95
8.0.150.0030.00316.96
8.0.140.0090.00016.81
8.0.130.0030.00313.35
8.0.120.0030.00516.90
8.0.110.0050.00316.92
8.0.100.0040.00417.08
8.0.90.0090.00016.87
8.0.80.0090.00616.94
8.0.70.0040.00417.02
8.0.60.0040.00416.85
8.0.50.0030.00617.01
8.0.30.0090.01017.25
8.0.20.0090.00917.40
8.0.10.0040.00416.93
8.0.00.0110.00816.90
7.4.330.0030.00315.24
7.4.320.0000.00716.65
7.4.300.0030.00316.82
7.4.290.0080.00016.68
7.4.280.0000.00716.82
7.4.270.0030.00316.91
7.4.260.0100.00016.83
7.4.250.0000.00816.79
7.4.240.0040.00316.79
7.4.230.0070.00016.54
7.4.220.0040.01317.00
7.4.210.0120.00416.71
7.4.200.0020.00516.63
7.4.160.0090.00616.80
7.4.150.0060.01217.40
7.4.140.0100.00917.86
7.4.130.0050.01116.88
7.4.120.0060.01216.78
7.4.110.0060.01016.82
7.4.100.0140.00416.73
7.4.90.0060.01216.65
7.4.80.0130.00316.82
7.4.70.0100.00716.91
7.4.60.0060.01116.71
7.4.50.0030.00316.75
7.4.40.0100.00716.82
7.4.30.0120.00316.73
7.4.00.0060.01014.86
7.3.330.0030.00313.39
7.3.320.0030.00313.35
7.3.310.0000.00816.40
7.3.300.0070.00016.45
7.3.290.0140.00016.47
7.3.280.0050.01516.50
7.3.270.0130.00617.40
7.3.260.0070.01016.49
7.3.250.0110.01016.53
7.3.240.0000.01716.50
7.3.230.0080.00816.79
7.3.210.0100.01416.95
7.3.200.0160.00819.39
7.3.190.0130.00916.79
7.3.180.0080.00816.45
7.3.170.0100.00716.54
7.3.160.0000.01616.46
7.2.330.0110.00616.77
7.2.320.0110.00616.61
7.2.310.0060.00916.86
7.2.300.0090.00816.63
7.2.290.0100.01316.85
7.2.60.0180.00316.68
7.1.200.0080.00316.10
7.1.100.0060.00618.28
7.1.70.0070.00017.43
7.1.60.0130.00619.32
7.1.50.0140.00717.21
7.1.00.0000.08022.39
7.0.200.0000.01116.71
7.0.140.0000.07022.18
7.0.60.0030.04720.02
7.0.50.0000.04317.91
7.0.40.0070.06320.26
7.0.30.0400.07020.21
7.0.20.0200.06020.11
7.0.10.0000.08320.22
7.0.00.0100.04020.21
5.6.280.0030.07321.15
5.6.210.0030.08320.77
5.6.200.0130.05018.18
5.6.190.0100.08720.53
5.6.180.0470.07720.50
5.6.170.0200.03720.52
5.6.160.0030.06020.55
5.6.150.0030.09018.19
5.6.140.0070.08018.20
5.6.130.0000.04318.23
5.6.120.0030.04020.76
5.6.110.0070.04021.02
5.6.100.0170.07721.04
5.6.90.0170.05721.14
5.6.80.0030.04320.35
5.5.350.0170.08320.41
5.5.340.0070.06717.96
5.5.330.0030.08720.43
5.5.320.0430.07020.36
5.5.310.0300.07720.32
5.5.300.0170.07017.94
5.5.290.0030.08017.95
5.5.280.0030.04320.80
5.5.270.0070.06020.85
5.5.260.0100.03320.97
5.5.250.0100.06720.66
5.5.240.0070.08320.16
5.4.450.3670.04319.40
5.4.440.3500.04019.17
5.4.430.3830.03719.38
5.4.420.3500.04719.44
5.4.410.3530.04319.27
5.4.400.5400.03319.08
5.4.390.3100.03718.92
5.4.380.4070.04018.92
5.4.370.3570.03719.16
5.4.360.3270.03719.08
5.4.350.3470.03319.05
5.4.340.3600.03719.15
5.4.320.4130.03319.06
5.4.310.4170.04318.92
5.4.300.4100.03019.07
5.4.290.3370.04018.91
5.4.280.4270.02719.08
5.4.270.5130.03718.87
5.4.260.3800.03318.93
5.4.250.3870.03318.99
5.4.240.3070.03719.04
5.4.230.3330.03719.11
5.4.220.2570.03318.93
5.4.210.3270.04018.99
5.4.200.3100.04019.07
5.4.190.3000.03718.86
5.4.180.3570.03319.07
5.4.170.3800.03719.06
5.4.160.3600.03719.05
5.4.150.4200.04019.13
5.4.140.4330.03316.50
5.4.130.4330.03316.34
5.4.120.4130.03316.35
5.4.110.4030.02716.58
5.4.100.3730.04016.28
5.4.90.4100.04016.56
5.4.80.4130.04016.54
5.4.70.3230.04016.43
5.4.60.3730.03316.18
5.4.50.3870.03316.38
5.4.40.4230.03016.23
5.4.30.4370.03316.54
5.4.20.3970.03716.48
5.4.10.4070.03716.52
5.4.00.4400.03315.82
5.3.290.3870.04714.75
5.3.280.3000.03314.57
5.3.270.3700.03314.62
5.3.260.4170.02714.61
5.3.250.4270.03714.83
5.3.240.4300.03714.60
5.3.230.4330.03314.51
5.3.220.3700.03014.48
5.3.210.4270.03314.66
5.3.200.4200.04014.58
5.3.190.4000.03314.50
5.3.180.4170.03714.79
5.3.170.4170.03314.47
5.3.160.4200.03014.65
5.3.150.4270.03314.75
5.3.140.4170.04014.47
5.3.130.4200.03314.64
5.3.120.3870.04014.72
5.3.110.4270.04014.57
5.3.100.4070.04014.21
5.3.90.3830.04014.25
5.3.80.4170.04014.04
5.3.70.4230.04314.19
5.3.60.3870.04314.13
5.3.50.3470.04013.87
5.3.40.3500.03014.04
5.3.30.3730.03713.84
5.3.20.4030.05013.67
5.3.10.3200.02713.89
5.3.00.4070.03713.57
5.2.170.2500.03011.23
5.2.160.3000.03311.16
5.2.150.3070.02711.05
5.2.140.3130.03311.06
5.2.130.3030.03011.02
5.2.120.3030.03011.06
5.2.110.2770.02711.03
5.2.100.3230.02711.22
5.2.90.2700.03011.27
5.2.80.3270.02711.11
5.2.70.3470.03011.07
5.2.60.3700.03711.22
5.2.50.3030.03011.19
5.2.40.2630.02711.05
5.2.30.2730.02311.20
5.2.20.2130.03011.05
5.2.10.2500.03711.09
5.2.00.2730.03010.94
5.1.60.2630.02010.07
5.1.50.2570.0279.88
5.1.40.2800.0239.86
5.1.30.2630.02310.25
5.1.20.2530.02710.36
5.1.10.2900.0239.96
5.1.00.2930.02710.25
5.0.50.1670.0208.48
5.0.40.1300.0208.35
5.0.30.0970.0308.23
5.0.20.1370.0208.13
5.0.10.1570.0208.11
5.0.00.1730.0338.21
4.4.90.1330.0135.90
4.4.80.1370.0105.84
4.4.70.1530.0175.81
4.4.60.1500.0205.83
4.4.50.1630.0175.91
4.4.40.1630.0305.91
4.4.30.1670.0205.86
4.4.20.1270.0175.91
4.4.10.1770.0135.89
4.4.00.1400.0235.92
4.3.110.1500.0175.77
4.3.100.1570.0175.76
4.3.90.1370.0175.76
4.3.80.1670.0235.84
4.3.70.1300.0175.76
4.3.60.1370.0105.76
4.3.50.1270.0175.79
4.3.40.1530.0275.76
4.3.30.0900.0205.76
4.3.20.0970.0205.76
4.3.10.0870.0235.76
4.3.00.0870.0175.76

preferences:
54.86 ms | 401 KiB | 5 Q