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('_', $words)); } 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)
8.3.60.0070.01416.50
8.3.50.0150.00322.05
8.3.40.0110.00418.66
8.3.30.0140.00019.07
8.3.20.0070.00020.16
8.3.10.0040.00421.72
8.3.00.0080.00017.68
8.2.180.0180.00418.42
8.2.170.0110.00322.96
8.2.160.0030.01020.27
8.2.150.0040.00424.18
8.2.140.0110.00424.66
8.2.130.0070.00026.16
8.2.120.0070.00021.02
8.2.110.0100.00720.96
8.2.100.0090.00317.91
8.2.90.0080.00018.99
8.2.80.0040.00417.97
8.2.70.0000.00817.59
8.2.60.0040.00418.03
8.2.50.0060.00318.10
8.2.40.0040.00418.22
8.2.30.0000.00718.20
8.2.20.0060.00317.74
8.2.10.0070.00018.02
8.2.00.0080.00017.84
8.1.280.0090.00625.92
8.1.270.0040.00423.83
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00721.28
8.1.230.0080.00417.89
8.1.220.0040.00417.79
8.1.210.0040.00418.77
8.1.200.0000.00917.00
8.1.190.0060.00317.35
8.1.180.0080.00018.10
8.1.170.0050.00320.25
8.1.160.0050.00222.04
8.1.150.0040.00418.80
8.1.140.0000.00717.45
8.1.130.0000.00717.82
8.1.120.0040.00417.54
8.1.110.0000.00717.37
8.1.100.0070.00017.45
8.1.90.0000.00817.45
8.1.80.0040.00417.46
8.1.70.0030.00317.42
8.1.60.0040.00417.59
8.1.50.0060.00317.54
8.1.40.0080.00017.57
8.1.30.0000.00817.59
8.1.20.0070.00017.68
8.1.10.0000.00817.55
8.1.00.0040.00417.48
8.0.300.0050.00218.77
8.0.290.0000.00716.75
8.0.280.0050.00318.36
8.0.270.0000.00717.21
8.0.260.0040.00417.27
8.0.250.0040.00416.89
8.0.240.0000.00716.98
8.0.230.0030.00316.85
8.0.220.0080.00016.87
8.0.210.0000.00716.91
8.0.200.0030.00316.86
8.0.190.0070.00016.83
8.0.180.0070.00016.99
8.0.170.0040.00416.83
8.0.160.0000.00716.85
8.0.150.0000.00816.89
8.0.140.0050.00316.92
8.0.130.0030.00313.40
8.0.120.0050.00316.75
8.0.110.0040.00416.82
8.0.100.0000.00716.87
8.0.90.0070.00016.91
8.0.80.0100.01116.86
8.0.70.0050.00216.84
8.0.60.0000.00816.72
8.0.50.0040.00416.90
8.0.30.0100.01117.26
8.0.20.0110.00917.40
8.0.10.0070.00016.98
8.0.00.0090.00916.78
7.4.330.0000.00515.05
7.4.320.0040.00416.42
7.4.300.0000.00616.52
7.4.290.0040.00416.53
7.4.280.0000.00916.40
7.4.270.0050.00216.61
7.4.260.0000.00716.61
7.4.250.0000.00716.60
7.4.240.0000.00716.59
7.4.230.0070.00016.62
7.4.220.0070.01116.73
7.4.210.0110.00416.57
7.4.200.0070.00016.70
7.4.160.0130.00316.59
7.4.150.0100.01017.40
7.4.140.0070.00917.86
7.4.130.0110.00916.53
7.4.120.0070.01016.50
7.4.110.0120.00616.52
7.4.100.0090.00916.67
7.4.90.0110.00616.43
7.4.80.0130.01719.39
7.4.70.0130.00416.66
7.4.60.0090.00916.48
7.4.50.0000.00516.63
7.4.40.0030.01316.69
7.4.30.0150.00316.65
7.4.00.0070.01015.05
7.3.330.0030.00313.37
7.3.320.0000.00513.32
7.3.310.0000.00716.33
7.3.300.0070.00016.39
7.3.290.0060.00916.38
7.3.280.0070.01116.35
7.3.270.0080.00817.40
7.3.260.0070.01116.44
7.3.250.0070.01116.47
7.3.240.0110.00616.49
7.3.230.0090.01216.63
7.3.210.0150.00616.39
7.3.200.0100.00719.39
7.3.190.0090.01216.61
7.3.180.0090.00616.31
7.3.170.0090.00916.57
7.3.160.0040.01116.46
7.3.120.0090.00614.87
7.2.330.0140.00416.51
7.2.320.0050.01416.44
7.2.310.0120.00616.67
7.2.300.0060.01116.68
7.2.290.0060.00916.77
7.2.60.0160.00816.86
7.2.00.0090.00319.59
7.1.200.0090.00315.59
7.1.100.0060.00918.09
7.1.70.0040.00717.16
7.1.60.0070.01719.25
7.1.50.0120.00917.05
7.1.00.0030.07322.33
7.0.200.0060.00616.91
7.0.140.0030.07321.90
7.0.60.0030.08019.96
7.0.50.0030.06717.98
7.0.40.0170.07720.19
7.0.30.0270.04020.09
7.0.20.0370.07720.09
7.0.10.0100.03720.24
7.0.00.0100.04020.30
5.6.280.0000.07721.05
5.6.210.0070.08020.70
5.6.200.0100.06018.24
5.6.190.0100.08320.35
5.6.180.0200.08720.63
5.6.170.0500.05020.48
5.6.160.0100.07020.54
5.6.150.0070.07718.16
5.6.140.0070.06318.13
5.6.130.0000.04718.15
5.6.120.0130.07020.99
5.6.110.0100.05721.15
5.6.100.0100.07320.98
5.6.90.0170.07321.01
5.6.80.0000.08720.55
5.5.350.4170.04020.45
5.5.340.0030.08017.98
5.5.330.0070.08320.19
5.5.320.0600.06020.20
5.5.310.0270.08020.42
5.5.300.0000.04017.94
5.5.290.0030.04717.98
5.5.280.0100.08320.89
5.5.270.0000.09020.69
5.5.260.0100.08020.68
5.5.250.0100.07320.67
5.5.240.0300.07720.20
5.4.450.0230.07019.55
5.4.440.0200.06719.33
5.4.430.0130.07019.46
5.4.420.0170.04319.46
5.4.410.0130.04019.27
5.4.400.0100.05019.09
5.4.390.0070.04318.98
5.4.380.0130.03318.98
5.4.370.0170.07019.24
5.4.360.0170.04719.14
5.4.350.0130.03719.22
5.4.340.0130.04019.24
5.4.320.0100.07319.24
5.4.310.0130.06319.00
5.4.300.0130.05019.09
5.4.290.0170.07319.01
5.4.280.0130.05018.88
5.4.270.0170.07019.05
5.4.260.0230.07018.84
5.4.250.0170.04319.19
5.4.240.0130.04319.15
5.4.230.0200.07319.09
5.4.220.0230.07319.01
5.4.210.0170.04019.05
5.4.200.0330.03019.22
5.4.190.0070.04319.15
5.4.180.0130.04318.83
5.4.170.0100.03719.07
5.4.160.0100.03719.07
5.4.150.0100.03719.12
5.4.140.0100.03716.55
5.4.130.0100.03716.43
5.4.120.0100.03716.38
5.4.110.0100.03716.24
5.4.100.0130.04316.59
5.4.90.0070.04016.40
5.4.80.0100.03716.57
5.4.70.0130.04716.62
5.4.60.0070.03716.43
5.4.50.0100.04316.52
5.4.40.0100.03316.38
5.4.30.0070.03716.50
5.4.20.0130.03316.39
5.4.10.0100.03716.55
5.4.00.0100.03315.96
5.3.290.0100.04014.82
5.3.280.0170.03014.57
5.3.270.0130.03314.73
5.3.260.0100.06714.66
5.3.250.0100.04014.53
5.3.240.0130.04014.58
5.3.230.0030.04014.62
5.3.220.0130.04314.54
5.3.210.0130.05014.63
5.3.200.0100.03714.59
5.3.190.0100.03714.58
5.3.180.0130.03314.54
5.3.170.0100.03714.69
5.3.160.0130.04014.48
5.3.150.0130.03314.79
5.3.140.0070.04314.56
5.3.130.0130.03314.78
5.3.120.0100.03714.64
5.3.110.0100.03714.78
5.3.100.0030.04014.02
5.3.90.0070.03714.05
5.3.80.0100.03314.05
5.3.70.0100.03314.08
5.3.60.0130.03013.94
5.3.50.0030.04013.87
5.3.40.0130.03313.87
5.3.30.0070.03713.83
5.3.20.0100.03313.79
5.3.10.0030.04013.76
5.3.00.0070.03713.73
5.2.170.0100.02712.91
5.2.160.0100.02712.91
5.2.150.0000.03712.91
5.2.140.0030.03012.91
5.2.130.0030.03012.91
5.2.120.0070.02712.91
5.2.110.0070.03712.91
5.2.100.0030.03712.91
5.2.90.0070.03012.91
5.2.80.0100.03012.91
5.2.70.0100.02712.91
5.2.60.0130.02312.91
5.2.50.0030.03312.91
5.2.40.0030.03012.91
5.2.30.0070.02712.91
5.2.20.0100.02312.91
5.2.10.0000.03312.91
5.2.00.0000.03312.91
5.1.60.0070.03012.91
5.1.50.0070.02312.91
5.1.40.0070.02712.91
5.1.30.0030.02712.91
5.1.20.0100.02312.91
5.1.10.0070.02312.91
5.1.00.0100.02012.91
5.0.50.0030.01712.91
5.0.40.0000.02012.91
5.0.30.0000.03712.91
5.0.20.0030.01712.91
5.0.10.0000.02312.91
5.0.00.0000.03012.91
4.4.90.0030.01312.91
4.4.80.0000.01712.91
4.4.70.0030.01312.91
4.4.60.0000.01712.91
4.4.50.0030.01312.91
4.4.40.0000.02712.91
4.4.30.0000.01712.91
4.4.20.0030.01712.91
4.4.10.0000.01712.91
4.4.00.0000.02312.91
4.3.110.0030.01312.91
4.3.100.0000.02712.91
4.3.90.0000.01312.91
4.3.80.0000.03712.91
4.3.70.0000.01712.91
4.3.60.0000.01712.91
4.3.50.0030.01012.91
4.3.40.0030.02012.91
4.3.30.0030.01312.91
4.3.20.0000.02712.91
4.3.10.0000.01712.91
4.3.00.0000.01312.12

preferences:
46.08 ms | 401 KiB | 5 Q