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) ) ); } $samples = array( 'FooBar', 'FooBAR', 'FOObar', 'foo_bar', 'foo_bar', ); print_r(array_map(function ($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)
8.3.60.0070.00716.87
8.3.50.0070.01122.00
8.3.40.0090.00618.92
8.3.30.0150.00018.82
8.3.20.0040.00420.34
8.3.10.0050.00321.94
8.3.00.0000.00817.68
8.2.180.0110.00417.00
8.2.170.0090.00622.96
8.2.160.0150.00320.39
8.2.150.0080.00024.18
8.2.140.0150.00624.66
8.2.130.0080.00026.16
8.2.120.0000.00820.96
8.2.110.0070.00322.38
8.2.100.0080.00419.88
8.2.90.0060.00319.22
8.2.80.0090.00018.00
8.2.70.0040.00417.99
8.2.60.0040.00817.93
8.2.50.0060.00618.07
8.2.40.0040.00417.94
8.2.30.0040.00418.34
8.2.20.0040.00418.03
8.2.10.0080.00018.21
8.2.00.0040.00418.02
8.1.280.0060.00925.92
8.1.270.0090.00023.91
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00323.96
8.1.230.0080.00318.98
8.1.220.0080.00017.74
8.1.210.0050.00318.77
8.1.200.0000.00917.61
8.1.190.0040.00417.35
8.1.180.0050.00318.10
8.1.170.0000.00818.78
8.1.160.0040.00422.04
8.1.150.0040.00418.82
8.1.140.0040.00417.63
8.1.130.0020.00517.86
8.1.120.0040.00417.63
8.1.110.0040.00417.61
8.1.100.0040.00417.69
8.1.90.0040.00417.51
8.1.80.0040.00417.58
8.1.70.0000.00717.57
8.1.60.0100.00017.77
8.1.50.0050.00317.59
8.1.40.0000.00817.56
8.1.30.0030.00617.74
8.1.20.0050.00317.82
8.1.10.0040.00417.64
8.1.00.0040.00417.58
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0040.00418.40
8.0.270.0000.00817.23
8.0.260.0000.00617.27
8.0.250.0000.00716.92
8.0.240.0000.00817.02
8.0.230.0070.00017.05
8.0.220.0000.00717.01
8.0.210.0000.00716.99
8.0.200.0000.00717.08
8.0.190.0040.00417.14
8.0.180.0050.00317.09
8.0.170.0000.00717.06
8.0.160.0070.00017.10
8.0.150.0000.00817.05
8.0.140.0040.00416.93
8.0.130.0050.00013.47
8.0.120.0000.00817.02
8.0.110.0050.00316.96
8.0.100.0070.00016.91
8.0.90.0050.00217.10
8.0.80.0090.00617.03
8.0.70.0040.00417.09
8.0.60.0000.00716.96
8.0.50.0080.00017.05
8.0.30.0140.00417.09
8.0.20.0100.01017.40
8.0.10.0040.00417.02
8.0.00.0080.01117.04
7.4.330.0000.00515.10
7.4.320.0030.00316.65
7.4.300.0030.00316.80
7.4.290.0000.00716.87
7.4.280.0080.00216.62
7.4.270.0050.00316.82
7.4.260.0070.00016.66
7.4.250.0050.00216.64
7.4.240.0010.00616.74
7.4.230.0080.00016.72
7.4.220.0140.00416.76
7.4.210.0080.00516.84
7.4.200.0070.00016.80
7.4.160.0080.00816.81
7.4.150.0100.00717.40
7.4.140.0100.00717.86
7.4.130.0100.00716.65
7.4.120.0060.01416.65
7.4.110.0140.00716.52
7.4.100.0170.00016.61
7.4.90.0090.00916.53
7.4.80.0120.00619.39
7.4.70.0100.00616.59
7.4.60.0100.01316.69
7.4.50.0030.00516.65
7.4.40.0100.01316.49
7.4.30.0060.01016.68
7.4.00.0040.01415.24
7.3.330.0000.00513.32
7.3.320.0050.00013.38
7.3.310.0050.00316.50
7.3.300.0000.00716.38
7.3.290.0070.00716.48
7.3.280.0050.01316.42
7.3.270.0150.00317.40
7.3.260.0070.01116.50
7.3.250.0080.01016.61
7.3.240.0130.00516.67
7.3.230.0040.01616.90
7.3.210.0170.00016.77
7.3.200.0160.00619.39
7.3.190.0120.00616.85
7.3.180.0070.01316.81
7.3.170.0150.00316.85
7.3.160.0120.00316.55
7.3.120.0070.00715.00
7.2.330.0090.00916.80
7.2.320.0070.01016.81
7.2.310.0060.01616.80
7.2.300.0000.01716.87
7.2.290.0070.01416.72
7.1.200.0140.00316.13
7.1.100.0060.00617.84
7.1.70.0040.00417.46
7.1.60.0040.00717.49
7.1.50.0060.01817.19
7.1.00.0000.08022.38
7.0.200.0090.00916.80
7.0.140.0030.07722.13
7.0.60.0070.06019.80
7.0.50.0000.05717.91
7.0.40.0030.04720.29
7.0.30.0370.07320.12
7.0.20.0370.08720.25
7.0.10.0170.07720.04
7.0.00.0170.07720.23
5.6.280.0000.07720.91
5.6.210.0100.09020.70
5.6.200.0030.04018.28
5.6.190.0070.08720.67
5.6.180.0330.07320.47
5.6.170.0270.04720.44
5.6.160.0030.08720.55
5.6.150.0100.04318.18
5.6.140.0070.03718.19
5.6.130.0100.08318.28
5.6.120.0070.06321.11
5.6.110.0030.05021.00
5.6.100.0100.08020.99
5.6.90.0070.07321.14
5.6.80.0070.07320.45
5.5.350.4200.04720.37
5.5.340.0130.05017.96
5.5.330.0070.06720.42
5.5.320.0370.06720.31
5.5.310.0230.03320.35
5.5.300.0070.06017.99
5.5.290.0030.08317.95
5.5.280.0000.04320.98
5.5.270.0030.04020.77
5.5.260.0100.07720.90
5.5.250.0100.07320.47
5.5.240.0100.03020.27
5.4.450.0670.05019.63
5.4.440.0170.06019.45
5.4.430.0230.06319.47
5.4.420.0170.06019.63
5.4.410.0100.05718.70
5.4.400.0330.05718.82
5.4.390.0270.05718.64
5.4.380.0270.05318.79
5.4.370.0070.05318.70
5.4.360.0130.05018.71
5.4.350.0100.04112.02
5.4.340.0070.04312.02
5.4.320.0060.03712.51
5.4.310.0070.03812.50
5.4.300.0090.03612.51
5.4.290.0060.04012.50
5.4.280.0090.03412.40
5.4.270.0070.03712.40
5.4.260.0080.03712.40
5.4.250.0060.04212.40
5.4.240.0040.03912.41
5.4.230.0050.04012.39
5.4.220.0080.03512.39
5.4.210.0070.03612.39
5.4.200.0050.04012.39
5.4.190.0050.03912.39
5.4.180.0090.03412.39
5.4.170.0050.03912.40
5.4.160.0050.03912.39
5.4.150.0060.03712.39
5.4.140.0100.03412.08
5.4.130.0080.03912.07
5.4.120.0070.03512.02
5.4.110.0080.03412.02
5.4.100.0090.04312.02
5.4.90.0070.03612.02
5.4.80.0060.03912.02
5.4.70.0090.03212.01
5.4.60.0080.03412.02
5.4.50.0060.03612.01
5.4.40.0040.03812.00
5.4.30.0090.03312.00
5.4.20.0090.03312.00
5.4.10.0100.03212.00
5.4.00.0080.03511.48
5.3.290.0070.03912.80
5.3.280.0070.03812.71
5.3.270.0080.04112.72
5.3.260.0060.04012.72
5.3.250.0100.03512.72
5.3.240.0130.03212.72
5.3.230.0120.03412.71
5.3.220.0100.03612.68
5.3.210.0070.04012.68
5.3.200.0070.03912.68
5.3.190.0070.03712.68
5.3.180.0090.03512.68
5.3.170.0070.03712.67
5.3.160.0040.04112.67
5.3.150.0020.04312.67
5.3.140.0060.04012.66
5.3.130.0110.03612.66
5.3.120.0090.03812.66
5.3.110.0080.03812.66
5.3.100.0090.03512.14
5.3.90.0090.03412.12
5.3.80.0070.03612.11
5.3.70.0140.04012.11
5.3.60.0070.03712.09
5.3.50.0080.03612.04
5.3.40.0090.03512.04
5.3.30.0060.03712.00
5.3.20.0080.03611.78
5.3.10.0060.04211.75
5.3.00.0110.03511.73
5.2.170.0050.0309.23
5.2.160.0060.0289.23
5.2.150.0060.0299.23
5.2.140.0040.0329.23
5.2.130.0080.0269.18
5.2.120.0060.0279.18
5.2.110.0050.0299.19
5.2.100.0050.0289.18
5.2.90.0030.0359.18
5.2.80.0050.0409.18
5.2.70.0060.0309.18
5.2.60.0050.0329.14
5.2.50.0030.0339.10
5.2.40.0000.0349.09
5.2.30.0080.0269.05
5.2.20.0060.0299.04
5.2.10.0080.0328.95
5.2.00.0060.0298.81
5.1.60.0050.0248.09
5.1.50.0040.0258.09
5.1.40.0060.0238.07
5.1.30.0060.0248.42
5.1.20.0030.0288.45
5.1.10.0050.0268.17
5.1.00.0050.0248.18
5.0.50.0040.0206.65
5.0.40.0040.0186.51
5.0.30.0030.0316.32
5.0.20.0040.0196.29
5.0.10.0030.0206.27
5.0.00.0020.0326.26
4.4.90.0020.0164.78
4.4.80.0020.0174.76
4.4.70.0040.0144.75
4.4.60.0020.0164.75
4.4.50.0010.0174.77
4.4.40.0030.0254.71
4.4.30.0030.0154.75
4.4.20.0040.0144.84
4.4.10.0030.0164.85
4.4.00.0050.0274.76
4.3.110.0020.0164.66
4.3.100.0010.0164.66
4.3.90.0050.0134.63
4.3.80.0000.0274.58
4.3.70.0030.0144.63
4.3.60.0030.0144.62
4.3.50.0040.0164.63
4.3.40.0020.0274.54
4.3.30.0020.0163.31
4.3.20.0000.0183.29
4.3.10.0020.0183.24
4.3.00.0130.0237.21

preferences:
43.84 ms | 401 KiB | 5 Q