3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 'someValue_subKey'; echo strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', str_replace('_', '.', $x)));

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)
8.3.60.0090.01218.30
8.3.50.0080.01121.15
8.3.40.0100.00718.77
8.3.30.0060.00918.89
8.3.20.0040.00420.13
8.3.10.0080.00021.92
8.3.00.0000.00720.82
8.2.180.0040.01216.63
8.2.170.0070.00722.96
8.2.160.0070.00719.25
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00419.79
8.2.110.0090.00020.35
8.2.100.0110.00017.91
8.2.90.0040.00419.22
8.2.80.0000.00817.97
8.2.70.0050.00317.63
8.2.60.0060.00318.04
8.2.50.0060.00318.07
8.2.40.0040.00418.15
8.2.30.0040.00417.97
8.2.20.0050.00217.85
8.2.10.0000.00817.77
8.2.00.0030.00617.77
8.1.280.0140.00325.92
8.1.270.0080.00022.19
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0110.00021.29
8.1.230.0030.00717.45
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00617.22
8.1.190.0070.00017.40
8.1.180.0090.00018.64
8.1.170.0030.00618.67
8.1.160.0000.00722.09
8.1.150.0040.00418.64
8.1.140.0040.00417.54
8.1.130.0030.00317.84
8.1.120.0030.00317.60
8.1.110.0040.00417.51
8.1.100.0000.00817.43
8.1.90.0000.00817.43
8.1.80.0030.00317.57
8.1.70.0040.00417.50
8.1.60.0000.00917.68
8.1.50.0000.00817.65
8.1.40.0040.00417.53
8.1.30.0040.00417.78
8.1.20.0030.00517.63
8.1.10.0000.00817.54
8.1.00.0030.00517.65
8.0.300.0000.00818.77
8.0.290.0060.00316.88
8.0.280.0000.00718.48
8.0.270.0000.00817.32
8.0.260.0030.00316.98
8.0.250.0030.00317.02
8.0.240.0000.00816.98
8.0.230.0030.00316.93
8.0.220.0000.00717.00
8.0.210.0030.00317.01
8.0.200.0000.00716.91
8.0.190.0040.00417.05
8.0.180.0030.00517.04
8.0.170.0070.00016.90
8.0.160.0030.00316.92
8.0.150.0050.00316.94
8.0.140.0070.00016.98
8.0.130.0030.00313.28
8.0.120.0000.00716.89
8.0.110.0030.00616.93
8.0.100.0030.00516.92
8.0.90.0000.00717.06
8.0.80.0030.01716.95
8.0.70.0040.00416.96
8.0.60.0050.00217.02
8.0.50.0040.00417.00
8.0.30.0090.00917.07
8.0.20.0120.00617.40
8.0.10.0040.00416.98
8.0.00.0080.00916.96
7.4.330.0000.00515.00
7.4.320.0030.00316.73
7.4.300.0050.00216.69
7.4.290.0040.00416.57
7.4.280.0000.00816.64
7.4.270.0070.00016.68
7.4.260.0070.00016.73
7.4.250.0040.00416.76
7.4.240.0020.00516.75
7.4.230.0030.00316.50
7.4.220.0150.00016.83
7.4.210.0090.00916.69
7.4.200.0030.00516.75
7.4.190.0050.00216.60
7.4.160.0070.01016.65
7.4.150.0130.01017.40
7.4.140.0070.01317.86
7.4.130.0100.01116.58
7.4.120.0120.00516.60
7.4.110.0100.01016.43
7.4.100.0090.00916.74
7.4.90.0100.00716.49
7.4.80.0140.00519.39
7.4.70.0060.01016.50
7.4.60.0060.00916.52
7.4.50.0080.00016.65
7.4.40.0030.01022.77
7.4.30.0090.01216.47
7.4.00.0100.00614.76
7.3.330.0030.00313.12
7.3.320.0050.00012.98
7.3.310.0000.00716.29
7.3.300.0060.00016.20
7.3.290.0070.00716.34
7.3.280.0130.00316.27
7.3.270.0030.01317.40
7.3.260.0160.00716.55
7.3.250.0120.00416.41
7.3.240.0040.01316.34
7.3.230.0080.01016.56
7.3.210.0070.01016.32
7.3.200.0130.00319.39
7.3.190.0110.01116.63
7.3.180.0130.00516.32
7.3.170.0060.01016.43
7.3.160.0090.00916.61
7.3.120.0060.00914.87
7.3.10.0040.01116.82
7.3.00.0080.00816.71
7.2.330.0060.01316.78
7.2.320.0090.00916.54
7.2.310.0100.00716.77
7.2.300.0060.01216.52
7.2.290.0030.01416.70
7.2.130.0060.00616.75
7.2.120.0060.00817.05
7.2.110.0120.00616.95
7.2.100.0030.01316.79
7.2.90.0090.00317.17
7.2.80.0060.00316.63
7.2.70.0110.00416.81
7.2.60.0090.00417.14
7.2.50.0030.01416.96
7.2.40.0030.00616.82
7.2.30.0030.01316.68
7.2.20.0090.00617.05
7.2.10.0000.01417.06
7.2.00.0050.00918.16
7.1.250.0030.00815.73
7.1.200.0080.00615.86
7.1.100.0030.00918.34
7.1.70.0000.01517.21
7.1.60.0190.00619.82
7.1.50.0030.01917.18
7.1.00.0000.06022.53
7.0.200.0050.00317.01
7.0.140.0070.07022.09
7.0.60.0000.08720.09
7.0.50.0070.06017.92
7.0.40.0070.04020.13
7.0.30.0170.06320.02
7.0.20.0130.04320.20
7.0.10.0070.07020.06
7.0.00.0030.05720.22
5.6.280.0030.07321.11
5.6.210.0100.07020.70
5.6.200.0030.04718.21
5.6.190.0070.08320.27
5.6.180.0470.03720.34
5.6.170.0230.04320.48
5.6.160.0100.08320.54
5.6.150.0130.04018.12
5.6.140.0000.04318.17
5.6.130.0100.07718.10
5.6.120.0100.08320.95
5.6.110.0100.07021.13
5.6.100.0100.05320.99
5.6.90.0170.07021.09
5.6.80.0030.04020.25
5.5.350.0200.06020.34
5.5.340.0000.05017.98
5.5.330.0070.05320.42
5.5.320.0130.05020.31
5.5.310.0370.07320.16
5.5.300.0070.04317.98
5.5.290.0070.08317.96
5.5.280.0100.07320.86
5.5.270.0100.07320.86
5.5.260.0070.07720.75
5.5.250.0000.08720.68
5.5.240.0100.07020.25
5.4.450.0100.06319.38
5.4.440.0470.05319.45
5.4.430.0330.04319.48
5.4.420.0270.04719.48
5.4.410.0270.06719.36
5.4.400.0200.06018.73
5.4.390.0400.04718.78
5.4.380.0200.06318.61
5.4.370.0070.06018.61
5.4.360.0070.05718.76
5.4.350.0130.05318.71
5.4.340.0230.04318.70
5.4.320.0070.03412.45
5.4.310.0040.04112.45
5.4.300.0040.04712.45
5.4.290.0030.04012.45
5.4.280.0140.03212.34
5.4.270.0080.03912.35
5.4.260.0030.07718.88
5.4.250.0100.05318.82
5.4.240.0000.06018.75
5.4.230.0200.04719.00
5.4.220.0100.07718.94
5.4.210.0070.06318.64
5.4.200.0130.04718.89
5.4.190.0130.05018.88
5.4.180.0130.04718.69
5.4.170.0100.05718.72
5.4.160.0200.06318.88
5.4.150.0100.05718.91
5.4.140.0100.05716.48
5.4.130.0070.05016.25
5.4.120.0130.04716.27
5.4.110.0170.06316.50
5.4.100.0130.06716.34
5.4.90.0100.06716.47
5.4.80.0100.04716.37
5.4.70.0070.05316.25
5.4.60.0000.08316.47
5.4.50.0070.05016.36
5.4.40.0070.05716.46
5.4.30.0100.05316.36
5.4.20.0130.07016.40
5.4.10.0070.06016.26
5.4.00.0100.06315.69
5.3.290.0070.04212.80
5.3.280.0070.05014.30
5.3.270.0070.06014.30
5.3.260.0070.05314.71
5.3.250.0100.05014.75
5.3.240.0170.04314.45
5.3.230.0100.06014.43
5.3.220.0030.05714.66
5.3.210.0100.05014.61
5.3.200.0070.05314.43
5.3.190.0170.04714.57
5.3.180.0130.05014.41
5.3.170.0100.05714.60
5.3.160.0100.05014.44
5.3.150.0000.05714.44
5.3.140.0000.08014.39
5.3.130.0100.06314.59
5.3.120.0130.07314.59
5.3.110.0030.05714.55
5.3.100.0100.07014.05
5.3.90.0100.05014.05
5.3.80.0100.05013.71
5.3.70.0130.04713.85
5.3.60.0030.07713.69
5.3.50.0100.05013.86
5.3.40.0070.05313.82
5.3.30.0130.06314.05
5.3.20.0200.05713.63
5.3.10.0030.06313.64
5.3.00.0100.07013.64
5.2.170.0030.05711.06
5.2.160.0070.04311.16
5.2.150.0100.05311.15
5.2.140.0070.06011.05
5.2.130.0070.04711.00
5.2.120.0030.04311.19
5.2.110.0100.04011.25
5.2.100.0070.04011.10
5.2.90.0030.04311.01
5.2.80.0100.04011.11
5.2.70.0000.04711.00
5.2.60.0130.03311.05
5.2.50.0030.06311.03
5.2.40.0030.04011.09
5.2.30.0070.04010.92
5.2.20.0130.03310.85
5.2.10.0100.04310.77
5.2.00.0070.03710.79
5.1.60.0030.03310.14
5.1.50.0030.03710.04
5.1.40.0070.03710.16
5.1.30.0000.04010.15
5.1.20.0030.05710.27
5.1.10.0100.03310.15
5.1.00.0000.04710.15
5.0.50.0070.0308.56
5.0.40.0070.0238.34
5.0.30.0070.0408.31
5.0.20.0070.0308.22
5.0.10.0000.0408.40
5.0.00.0030.0438.35
4.4.90.0000.0237.46
4.4.80.0000.0237.46
4.4.70.0070.0177.46
4.4.60.0070.0277.46
4.4.50.0000.0237.46
4.4.40.0070.0307.46
4.4.30.0100.0137.46
4.4.20.0070.0277.46
4.4.10.0030.0237.46
4.4.00.0100.0277.46
4.3.110.0100.0277.46
4.3.100.0030.0207.46
4.3.90.0070.0177.46
4.3.80.0000.0377.46
4.3.70.0000.0337.46
4.3.60.0030.0307.46
4.3.50.0000.0237.46
4.3.40.0070.0437.46
4.3.30.0030.0307.46
4.3.20.0030.0277.46
4.3.10.0070.0177.46
4.3.00.0030.0207.63

preferences:
47.08 ms | 401 KiB | 5 Q