3v4l.org

run code in 300+ PHP versions simultaneously
<?php function do_split($name) { return preg_split('/([A-Z]{2,}|([A-Z][^A-Z]*))/', $name, null, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY); } function convert_case($name) { return implode( '_', array_map( 'strtolower', do_split($name) ) ); } function convert_case2($name) { $words = array(); $prev = ''; for ($i = 0; $i < strlen($name); $i++) { $char = $name[$i]; echo "{$char} " . (ctype_upper($char) ? 'true' : 'false') . "\n"; } return strtolower(implode('_', $output)); } convert_case2('FooBARbar0123'); $samples = array( 'FooBar', 'FooBAR', 'FOOBar', 'foo_bar', 'FOO_bar', 'foo_BAR', 'foo_Bar', 'Foo_bar', ); /* print_r(array_map(function ($name) { return array( 'name' => $name, 'split' => do_split($name), 'converted' => convert_case($name), ); }, $samples)); */

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)
8.3.70.0090.00916.58
8.3.60.0070.00716.61
8.3.50.0140.00521.92
8.3.40.0150.00018.56
8.3.30.0140.00019.01
8.3.20.0070.00020.29
8.3.10.0000.00821.69
8.3.00.0050.00317.68
8.2.180.0080.00816.88
8.2.170.0150.00022.96
8.2.160.0070.00720.47
8.2.150.0040.00424.18
8.2.140.0100.01024.66
8.2.130.0080.00026.16
8.2.120.0050.00319.96
8.2.110.0060.00322.20
8.2.100.0080.00318.22
8.2.90.0030.00519.34
8.2.80.0030.00517.97
8.2.70.0060.00317.75
8.2.60.0110.00018.03
8.2.50.0040.00718.07
8.2.40.0050.00318.28
8.2.30.0000.00718.44
8.2.20.0050.00317.88
8.2.10.0000.00718.21
8.2.00.0000.00917.79
8.1.280.0090.00625.92
8.1.270.0080.00023.91
8.1.260.0070.00026.35
8.1.250.0000.00728.09
8.1.240.0060.00322.18
8.1.230.0060.00619.22
8.1.220.0000.00817.74
8.1.210.0090.00018.77
8.1.200.0050.00517.50
8.1.190.0080.00017.23
8.1.180.0000.00818.10
8.1.170.0040.00418.75
8.1.160.0030.00522.04
8.1.150.0040.00418.89
8.1.140.0040.00417.51
8.1.130.0000.00717.86
8.1.120.0040.00417.36
8.1.110.0050.00217.36
8.1.100.0040.00417.45
8.1.90.0000.00717.36
8.1.80.0060.00317.37
8.1.70.0070.00017.34
8.1.60.0040.00417.55
8.1.50.0040.00417.52
8.1.40.0030.00617.46
8.1.30.0000.00817.70
8.1.20.0040.00417.66
8.1.10.0030.00617.58
8.1.00.0070.00017.48
8.0.300.0000.00718.77
8.0.290.0000.00816.75
8.0.280.0040.00418.46
8.0.270.0000.00717.19
8.0.260.0000.00717.32
8.0.250.0030.00317.04
8.0.240.0030.00616.95
8.0.230.0000.00817.01
8.0.220.0030.00316.85
8.0.210.0030.00316.97
8.0.200.0000.00717.02
8.0.190.0040.00416.91
8.0.180.0040.00417.00
8.0.170.0000.00717.03
8.0.160.0070.00016.91
8.0.150.0040.00416.80
8.0.140.0040.00416.93
8.0.130.0030.00313.38
8.0.120.0040.00416.93
8.0.110.0000.00716.97
8.0.100.0050.00316.94
8.0.90.0000.00716.97
8.0.80.0090.00616.98
8.0.70.0000.00716.93
8.0.60.0040.00416.84
8.0.50.0070.00016.80
8.0.30.0130.00717.00
8.0.20.0140.00617.40
8.0.10.0040.00416.89
8.0.00.0070.01016.65
7.4.330.0020.00215.03
7.4.320.0000.00616.53
7.4.300.0030.00316.53
7.4.290.0030.00316.42
7.4.280.0080.00416.52
7.4.270.0030.00316.52
7.4.260.0030.00616.59
7.4.250.0040.00416.58
7.4.240.0030.00316.52
7.4.230.0030.00316.59
7.4.220.0030.01616.56
7.4.210.0070.00716.60
7.4.200.0040.00416.41
7.4.160.0120.00416.62
7.4.150.0090.00917.40
7.4.140.0080.00817.86
7.4.130.0110.00716.66
7.4.120.0120.00516.60
7.4.110.0060.01616.37
7.4.100.0150.00316.66
7.4.90.0160.00016.59
7.4.80.0040.01419.39
7.4.70.0130.00316.56
7.4.60.0060.01816.37
7.4.50.0000.00816.52
7.4.40.0070.01016.56
7.4.30.0000.01616.50
7.4.00.0100.00714.75
7.3.330.0060.00013.39
7.3.320.0050.00013.51
7.3.310.0040.00416.49
7.3.300.0000.00716.43
7.3.290.0060.00816.38
7.3.280.0100.00816.44
7.3.270.0060.00917.40
7.3.260.0060.01216.58
7.3.250.0160.00516.55
7.3.240.0110.01016.66
7.3.230.0130.00716.41
7.3.210.0040.01216.54
7.3.200.0090.00819.39
7.3.190.0090.01216.52
7.3.180.0120.00316.44
7.3.170.0030.01316.46
7.3.160.0080.00816.50
7.3.120.0030.01414.98
7.2.330.0130.00416.82
7.2.320.0100.01016.61
7.2.310.0030.01816.67
7.2.300.0150.00316.86
7.2.290.0070.01016.49
7.2.60.0120.01217.00
7.2.00.0040.00819.44
7.1.200.0080.00615.90
7.1.100.0030.01018.20
7.1.70.0000.00717.26
7.1.60.0070.01819.25
7.1.50.0040.01116.96
7.1.00.0100.07022.53
7.0.200.0000.00716.73
7.0.140.0000.07721.95
7.0.60.0000.08719.89
7.0.50.0030.05717.86
7.0.40.0000.05020.04
7.0.30.0270.08320.23
7.0.20.0200.04720.24
7.0.10.0270.06720.10
7.0.00.0030.09320.05
5.6.280.0030.07321.09
5.6.210.0070.05020.73
5.6.200.0000.04318.18
5.6.190.0100.07320.38
5.6.180.0330.05320.58
5.6.170.0270.07720.50
5.6.160.0000.05720.54
5.6.150.0070.03718.29
5.6.140.0100.05018.15
5.6.130.0070.04718.17
5.6.120.0000.04320.89
5.6.110.0030.05021.15
5.6.100.0130.06020.99
5.6.90.0070.08321.12
5.6.80.0030.07720.39
5.5.350.0000.03720.34
5.5.340.0070.08017.99
5.5.330.0100.08020.27
5.5.320.3930.04020.24
5.5.310.0300.04020.31
5.5.300.0100.07317.97
5.5.290.0030.04018.06
5.5.280.0030.08320.88
5.5.270.0030.04020.97
5.5.260.0100.07720.90
5.5.250.0230.04020.56
5.5.240.0130.07020.30
5.4.450.1270.05019.49
5.4.440.1330.04319.41
5.4.430.1130.06319.54
5.4.420.0070.06019.37
5.4.410.0100.05719.01
5.4.400.0600.05018.76
5.4.390.0300.05318.59
5.4.380.0270.04718.54
5.4.370.0030.04718.82
5.4.360.0100.05018.80
5.4.350.0100.05012.03
5.4.340.0110.03812.02
5.4.320.0030.03912.51
5.4.310.0040.03912.51
5.4.300.0080.03412.51
5.4.290.0040.04012.51
5.4.280.0050.03612.40
5.4.270.0050.03712.40
5.4.260.0070.03712.40
5.4.250.0050.03812.40
5.4.240.0090.03412.40
5.4.230.0050.03912.39
5.4.220.0090.03812.40
5.4.210.0090.03212.39
5.4.200.0040.03912.39
5.4.190.0070.03512.39
5.4.180.0040.03812.39
5.4.170.0060.03612.40
5.4.160.0030.04612.39
5.4.150.0030.03912.39
5.4.140.0050.03812.07
5.4.130.0030.03912.06
5.4.120.0060.03612.02
5.4.110.0060.03612.02
5.4.100.0070.03512.01
5.4.90.0070.04212.02
5.4.80.0070.03812.02
5.4.70.0070.03412.02
5.4.60.0080.03412.01
5.4.50.0060.03512.01
5.4.40.0040.03712.00
5.4.30.0060.03512.00
5.4.20.0060.03912.00
5.4.10.0090.03612.00
5.4.00.0080.04111.49
5.3.290.0060.04412.80
5.3.280.0070.04312.71
5.3.270.0070.04212.73
5.3.260.0070.04712.72
5.3.250.0080.04012.72
5.3.240.0050.03812.72
5.3.230.0100.03312.71
5.3.220.0060.03612.68
5.3.210.0070.03812.68
5.3.200.0090.03612.68
5.3.190.0090.03412.68
5.3.180.0080.03412.68
5.3.170.0070.03612.66
5.3.160.0050.03812.67
5.3.150.0030.04012.68
5.3.140.0060.03612.66
5.3.130.0080.03612.66
5.3.120.0060.03812.66
5.3.110.0060.04212.66
5.3.100.0080.03612.13
5.3.90.0080.03712.11
5.3.80.0070.03712.10
5.3.70.0060.03612.10
5.3.60.0050.03712.09
5.3.50.0080.03512.03
5.3.40.0060.03812.03
5.3.30.0080.03311.99
5.3.20.0060.03711.77
5.3.10.0090.03211.73
5.3.00.0030.04211.72
5.2.170.0040.0319.22
5.2.160.0050.0299.23
5.2.150.0070.0289.23
5.2.140.0040.0319.23
5.2.130.0070.0399.18
5.2.120.0080.0379.19
5.2.110.0070.0319.19
5.2.100.0080.0279.18
5.2.90.0040.0299.18
5.2.80.0030.0319.18
5.2.70.0060.0299.18
5.2.60.0060.0289.14
5.2.50.0030.0349.11
5.2.40.0050.0289.08
5.2.30.0070.0299.05
5.2.20.0060.0279.05
5.2.10.0030.0298.95
5.2.00.0030.0308.81
5.1.60.0040.0248.10
5.1.50.0040.0248.09
5.1.40.0020.0268.07
5.1.30.0040.0268.42
5.1.20.0040.0268.45
5.1.10.0040.0318.17
5.1.00.0060.0278.17
5.0.50.0090.0256.64
5.0.40.0030.0226.51
5.0.30.0020.0326.32
5.0.20.0040.0226.29
5.0.10.0040.0236.27
5.0.00.0050.0346.26
4.4.90.0010.0174.78
4.4.80.0040.0194.75
4.4.70.0010.0174.75
4.4.60.0030.0174.75
4.4.50.0030.0154.77
4.4.40.0030.0274.71
4.4.30.0050.0144.76
4.4.20.0030.0174.84
4.4.10.0040.0204.84
4.4.00.0050.0314.76
4.3.110.0040.0164.67
4.3.100.0010.0164.66
4.3.90.0020.0154.63
4.3.80.0040.0234.58
4.3.70.0010.0164.63
4.3.60.0030.0144.63
4.3.50.0040.0144.63
4.3.40.0040.0304.54
4.3.30.0030.0203.30
4.3.20.0010.0193.28
4.3.10.0020.0163.25
4.3.00.0230.01715.25

preferences:
86.96 ms | 401 KiB | 5 Q