3v4l.org

run code in 300+ PHP versions simultaneously
<?php function doSomething($string) { $string[0] = strtolower($string[0]); $func = create_function('$c', 'return "_" . strtolower($c[1]);'); return preg_replace_callback('/([A-Z])/', $func, $string); } echo doSomething('camelCase');

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)
8.3.40.0120.00319.01
8.3.30.0110.00718.65
8.3.20.0000.00720.28
8.3.10.0080.00023.66
8.3.00.0030.00517.77
8.2.170.0040.01122.96
8.2.160.0000.01320.35
8.2.150.0050.00324.18
8.2.140.0030.00624.66
8.2.130.0080.00026.16
8.2.120.0030.00617.63
8.2.110.0110.01122.25
8.2.100.0120.00017.88
8.2.90.0030.00718.92
8.2.80.0030.00517.97
8.2.70.0040.00417.63
8.2.60.0040.00417.93
8.2.50.0000.00818.07
8.2.40.0040.00419.46
8.2.30.0070.00020.58
8.2.20.0000.00817.84
8.2.10.0040.00418.09
8.2.00.0000.00818.12
8.1.270.0060.00923.79
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0090.00022.52
8.1.230.0040.00717.48
8.1.220.0020.00517.79
8.1.210.0050.00318.77
8.1.200.0030.00617.35
8.1.190.0040.00417.13
8.1.180.0000.00818.10
8.1.170.0050.00318.57
8.1.160.0000.00721.89
8.1.150.0040.00418.79
8.1.140.0000.00817.39
8.1.130.0040.00417.69
8.1.120.0000.00717.31
8.1.110.0040.00417.34
8.1.100.0080.00017.44
8.1.90.0000.00817.45
8.1.80.0000.00817.30
8.1.70.0040.00417.31
8.1.60.0000.00717.55
8.1.50.0030.00517.34
8.1.40.0050.00517.39
8.1.30.0060.00317.51
8.1.20.0050.00217.57
8.1.10.0030.00617.54
8.1.00.0000.00817.34
8.0.300.0000.00818.77
8.0.290.0030.00616.75
8.0.280.0000.00718.36
8.0.270.0030.00317.28
8.0.260.0030.00317.25
8.0.250.0000.00716.94
8.0.240.0040.00416.97
8.0.230.0070.00017.00
8.0.220.0030.00316.87
8.0.210.0070.00016.96
8.0.200.0080.00316.93
8.0.190.0030.00617.05
8.0.180.0000.00716.97
8.0.170.0000.00816.88
8.0.160.0030.00317.05
8.0.150.0050.00316.81
8.0.140.0040.00416.77
8.0.130.0060.00013.34
8.0.120.0050.00316.91
8.0.110.0040.00416.82
8.0.100.0050.00316.85
8.0.90.0040.00416.75
8.0.80.0050.01216.95
8.0.70.0040.00416.83
8.0.60.0040.00416.78
8.0.50.0000.00817.02
8.0.30.0080.00816.93
8.0.20.0120.00617.40
8.0.10.0040.00416.91
8.0.00.0050.01316.85
7.4.330.0000.00515.18
7.4.320.0000.00716.75
7.4.300.0030.00316.82
7.4.290.0030.00316.81
7.4.280.0080.00316.80
7.4.270.0000.00816.74
7.4.260.0030.00316.76
7.4.250.0070.00016.85
7.4.240.0020.00516.69
7.4.230.0050.00216.96
7.4.220.0110.00816.91
7.4.210.0090.01316.83
7.4.200.0000.00716.85
7.4.160.0080.01316.84
7.4.150.0140.00417.40
7.4.140.0090.01217.86
7.4.130.0110.01116.80
7.4.120.0100.00716.71
7.4.110.0100.01316.82
7.4.100.0110.00716.76
7.4.90.0110.00716.79
7.4.80.0160.00819.39
7.4.70.0110.00816.68
7.4.60.0100.00716.71
7.4.50.0000.00516.85
7.4.40.0140.00316.90
7.4.30.0030.01416.95
7.4.00.0060.00615.09
7.3.330.0050.00013.48
7.3.320.0000.00613.50
7.3.310.0000.00816.59
7.3.300.0070.00016.53
7.3.290.0060.00916.53
7.3.280.0090.00816.52
7.3.270.0120.00917.40
7.3.260.0120.00916.81
7.3.250.0140.00616.52
7.3.240.0040.01516.47
7.3.230.0090.01216.52
7.3.210.0110.00916.60
7.3.200.0110.00816.59
7.3.190.0040.01716.80
7.3.180.0130.00316.46
7.3.170.0080.00816.71
7.3.160.0060.00916.52
7.2.330.0130.00716.86
7.2.320.0140.01016.97
7.2.310.0120.00416.68
7.2.300.0000.01716.87
7.2.290.0130.00816.91
7.2.60.0040.01116.94
7.2.00.0100.00719.45
7.1.200.0070.00716.01
7.1.100.0070.00418.52
7.1.70.0030.00617.35
7.1.60.0030.02019.50
7.1.50.0040.01617.22
7.1.00.0070.07322.45
7.0.200.0270.00014.81
7.0.60.0000.08319.86
7.0.50.0070.08017.75
7.0.40.0100.06320.31
7.0.30.0400.03720.12
7.0.20.0300.06020.25
7.0.10.0070.05320.27
7.0.00.0070.04320.17
5.6.280.0030.03721.07
5.6.210.0030.04020.47
5.6.200.0000.05318.16
5.6.190.0030.05320.34
5.6.180.0200.05320.66
5.6.170.0270.04720.55
5.6.160.0070.08320.54
5.6.150.0070.08018.15
5.6.140.0000.04318.14
5.6.130.0000.06318.17
5.6.120.0100.08321.10
5.6.110.0070.04321.02
5.6.100.0000.06721.01
5.6.90.0130.07721.03
5.6.80.0130.07020.39
5.5.350.0000.07720.38
5.5.340.0130.05318.05
5.5.330.0070.05020.21
5.5.320.2930.04020.36
5.5.310.0270.07320.34
5.5.300.0100.07317.95
5.5.290.0030.07317.98
5.5.280.0130.07020.98
5.5.270.0030.08320.67
5.5.260.0100.08320.72
5.5.250.0100.07720.68
5.5.240.0100.07020.33
5.4.450.0770.06319.42
5.4.440.0630.06019.56
5.4.430.0700.05019.13
5.4.420.0770.06019.59
5.4.410.0670.06019.19
5.4.400.0700.05019.08
5.4.390.0770.04319.05
5.4.380.0600.05719.20
5.4.370.0770.04319.09
5.4.360.0570.06318.92
5.4.350.0600.06019.09
5.4.340.0570.06319.18
5.4.320.0770.04318.92
5.4.310.0600.05719.16
5.4.300.0770.04018.95
5.4.290.0600.05719.09
5.4.280.0670.05319.16
5.4.270.0730.04719.20
5.4.260.0670.04718.99
5.4.250.0670.05019.24
5.4.240.0630.05718.76
5.4.230.0730.04718.95
5.4.220.0700.05319.24
5.4.210.0700.05019.24
5.4.200.0730.04719.15
5.4.190.0770.04319.27
5.4.180.0730.04719.25
5.4.170.0730.04718.80
5.4.160.0670.05019.14
5.4.150.0830.04318.76
5.4.140.0730.07016.33
5.4.130.0730.05016.41
5.4.120.0870.06016.50
5.4.110.0730.04716.28
5.4.100.0770.03716.43
5.4.90.0730.04016.52
5.4.80.0770.04716.20
5.4.70.0230.04316.50
5.4.60.0070.06016.17
5.4.50.0030.03716.55
5.4.40.0270.06316.42
5.4.30.0370.06316.48
5.4.20.0070.04316.55

preferences:
68.63 ms | 400 KiB | 5 Q