3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', 'camelCasedString')));

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)
8.3.60.0130.00716.63
8.3.50.0120.00917.51
8.3.40.0090.01218.74
8.3.30.0100.00718.62
8.3.20.0000.00818.75
8.3.10.0000.00820.51
8.3.00.0080.00019.35
8.2.180.0110.00716.50
8.2.170.0110.00422.96
8.2.160.0070.00721.03
8.2.150.0040.00424.18
8.2.140.0030.00624.66
8.2.130.0040.00426.16
8.2.120.0060.00319.36
8.2.110.0090.00020.35
8.2.100.0080.00317.84
8.2.90.0000.00819.11
8.2.80.0040.00417.97
8.2.70.0030.00617.63
8.2.60.0060.00317.80
8.2.50.0060.00618.07
8.2.40.0040.00417.97
8.2.30.0080.00017.93
8.2.20.0070.00017.70
8.2.10.0000.00717.57
8.2.00.0040.00417.78
8.1.280.0110.00425.92
8.1.270.0070.00024.66
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0040.00423.86
8.1.230.0090.00319.21
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0050.00517.35
8.1.190.0040.00417.10
8.1.180.0060.00318.10
8.1.170.0000.01018.70
8.1.160.0040.00421.93
8.1.150.0060.00218.65
8.1.140.0030.00517.44
8.1.130.0030.00317.70
8.1.120.0070.00017.49
8.1.110.0040.00417.32
8.1.100.0000.00717.49
8.1.90.0040.00417.37
8.1.80.0040.00417.53
8.1.70.0030.00317.42
8.1.60.0030.00517.61
8.1.50.0000.00917.51
8.1.40.0040.00417.37
8.1.30.0030.00517.65
8.1.20.0040.00417.66
8.1.10.0040.00417.52
8.1.00.0040.00417.28
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0070.00018.46
8.0.270.0070.00017.06
8.0.260.0000.00616.75
8.0.250.0030.00616.95
8.0.240.0050.00316.89
8.0.230.0000.00816.86
8.0.220.0060.00016.89
8.0.210.0030.00316.89
8.0.200.0030.00316.96
8.0.190.0000.00716.95
8.0.180.0070.00216.59
8.0.170.0040.00416.90
8.0.160.0000.00716.96
8.0.150.0030.00616.91
8.0.140.0080.00016.89
8.0.130.0060.00013.31
8.0.120.0000.00716.85
8.0.110.0000.00716.77
8.0.100.0030.00516.96
8.0.90.0050.00216.90
8.0.80.0040.01116.89
8.0.70.0070.00016.75
8.0.60.0030.00516.71
8.0.50.0000.00716.85
8.0.30.0170.00516.98
8.0.20.0120.00917.03
8.0.10.0050.00316.92
8.0.00.0110.01116.71
7.4.330.0000.00513.00
7.4.320.0000.00616.68
7.4.300.0040.00416.58
7.4.290.0030.00316.55
7.4.280.0060.00316.58
7.4.270.0030.00316.59
7.4.260.0050.00013.31
7.4.250.0000.00916.66
7.4.240.0030.00416.66
7.4.230.0040.00416.44
7.4.220.0130.00616.75
7.4.210.0100.00716.62
7.4.200.0000.00716.67
7.4.190.0040.00416.77
7.4.160.0150.00016.68
7.4.150.0060.01216.60
7.4.140.0100.01016.60
7.4.130.0120.00516.57
7.4.120.0170.00716.51
7.4.110.0100.00716.58
7.4.100.0060.01616.28
7.4.90.0060.01216.75
7.4.80.0110.00619.39
7.4.70.0130.00416.41
7.4.60.0140.00716.40
7.4.50.0000.00816.54
7.4.40.0040.01116.72
7.4.30.0120.00916.60
7.4.00.0100.00714.95
7.3.330.0030.00313.15
7.3.320.0000.00713.19
7.3.310.0040.00416.14
7.3.300.0000.00716.31
7.3.290.0070.01116.30
7.3.280.0060.01016.30
7.3.270.0140.00316.77
7.3.260.0110.01116.36
7.3.250.0170.00316.38
7.3.240.0060.01016.48
7.3.230.0150.00916.54
7.3.210.0070.01016.29
7.3.200.0040.01416.64
7.3.190.0060.01216.50
7.3.180.0130.00316.43
7.3.170.0090.00616.56
7.3.160.0090.00616.20
7.3.120.0080.01014.71
7.3.110.0040.00715.00
7.3.100.0040.00814.88
7.3.90.0060.00614.68
7.3.80.0060.00614.62
7.3.70.0040.00414.88
7.3.60.0100.00714.89
7.3.50.0040.01114.86
7.3.40.0070.00714.73
7.3.30.0130.00314.94
7.3.20.0060.00616.54
7.3.10.0060.00316.64
7.3.00.0030.01416.51
7.2.330.0140.00416.73
7.2.320.0110.01116.44
7.2.310.0060.01816.71
7.2.300.0100.00816.46
7.2.290.0060.01616.45
7.2.250.0120.00614.70
7.2.240.0100.01115.02
7.2.230.0090.00614.95
7.2.220.0040.00714.96
7.2.210.0000.01715.04
7.2.200.0000.00914.97
7.2.190.0110.00714.75
7.2.180.0070.01015.18
7.2.170.0140.00015.21
7.2.00.0070.00719.70
7.1.330.0130.00315.88
7.1.320.0030.01015.82
7.1.310.0070.00715.44
7.1.300.0070.01115.79
7.1.290.0040.00715.99
7.1.280.0030.01315.93
7.1.270.0080.00415.88
7.1.260.0030.01016.05
7.1.70.0000.00717.23
7.1.60.0130.00319.40
7.1.50.0090.01217.07
7.1.00.0030.05722.37
7.0.200.0310.00314.77
7.0.140.0000.07722.13
7.0.120.0030.07322.19
7.0.60.0130.06319.95
7.0.50.0100.03717.91
7.0.40.0130.08320.05
7.0.30.0270.05020.18
7.0.20.0300.04720.18
7.0.10.0130.04720.03
7.0.00.0000.04720.34
5.6.280.0100.06721.12
5.6.210.0100.05720.50
5.6.200.0130.07318.21
5.6.190.0070.06720.32
5.6.180.0170.04320.41
5.6.170.0230.05320.48
5.6.160.0170.04720.45
5.6.150.0130.07318.13
5.6.140.0030.06018.21
5.6.130.0130.06318.21
5.6.120.0030.07320.96
5.6.110.0030.04721.12
5.6.100.0130.08321.07
5.6.90.0000.04321.12
5.6.80.0100.06320.40
5.6.70.0330.06720.43
5.5.350.0030.08320.48
5.5.340.0070.07318.02
5.5.330.0100.08320.40
5.5.320.0170.05020.17
5.5.310.0300.07020.32
5.5.300.0200.07018.01
5.5.290.0070.05718.01
5.5.280.0170.07320.73
5.5.270.0270.02720.79
5.5.260.0130.08020.78
5.5.250.0070.03720.79
5.5.240.0130.07020.23
5.4.450.1900.04719.25
5.4.440.1870.05019.26
5.4.430.1870.04319.45
5.4.420.0070.03719.24
5.4.410.0230.06019.13
5.4.400.0070.08018.81
5.4.390.0400.07019.12
5.4.380.0000.08019.09
5.4.370.0070.03319.22
5.4.360.1400.04719.13
5.4.350.1570.03719.16
5.4.340.1630.04019.13
5.4.320.1700.03719.08
5.4.310.1870.04719.09
5.4.300.1800.04018.80
5.4.290.1900.04319.21
5.4.280.1900.04019.12
5.4.270.1900.04018.88
5.4.260.1870.04319.21
5.4.250.1700.04019.24
5.4.240.1700.04018.88
5.4.230.1800.04318.95
5.4.220.2000.04019.08
5.4.210.1930.04019.21
5.4.200.1870.03719.23
5.4.190.1770.04319.23
5.4.180.1870.04319.12
5.4.170.1900.04019.23
5.4.160.1900.04019.08
5.4.150.1670.04019.11
5.4.140.1970.04316.44
5.4.130.1600.03316.18
5.4.120.0000.04016.31
5.4.110.0070.03716.45
5.4.100.0900.07316.18
5.4.90.1670.04316.39
5.4.80.1930.03316.29
5.4.70.1830.05016.37
5.4.60.1800.04716.32
5.4.50.1870.04316.36
5.4.40.1900.03716.28
5.4.30.1700.03316.18
5.4.20.2170.02716.32
5.4.10.2000.05016.49
5.4.00.2070.04315.78
5.3.290.1900.04714.61
5.3.280.1730.04014.54
5.3.270.1730.03714.64
5.3.260.1900.04314.44
5.3.250.1900.04314.45
5.3.240.1930.04014.44
5.3.230.1630.04014.44
5.3.220.1470.04314.65
5.3.210.1700.03314.51
5.3.200.2000.04314.40
5.3.190.1700.03714.43
5.3.180.1630.04014.60
5.3.170.1670.03714.39
5.3.160.1730.03714.54
5.3.150.1670.03714.39
5.3.140.1930.04014.49
5.3.130.1900.03714.48
5.3.120.1670.03714.38
5.3.110.1900.05014.49
5.3.100.2200.03314.07
5.3.90.1900.04013.96
5.3.80.1800.03714.03
5.3.70.1670.04013.85
5.3.60.1830.04013.87
5.3.50.0130.03713.77
5.3.40.0070.04314.03
5.3.30.0270.03313.88
5.3.20.0130.03713.63
5.3.10.0170.06013.52
5.3.00.0230.06013.68
5.2.170.0130.04011.30
5.2.160.0100.06310.98
5.2.150.0170.03711.20
5.2.140.0200.05711.15
5.2.130.0270.01310.94
5.2.120.0200.04711.14
5.2.110.0100.03011.04
5.2.100.0170.03710.94
5.2.90.0100.03011.17
5.2.80.0170.03010.95
5.2.70.0170.03310.95
5.2.60.0130.04711.00
5.2.50.0100.03310.95
5.2.40.0130.05310.83
5.2.30.0130.02711.02
5.2.20.0100.05710.89
5.2.10.0030.03310.93
5.2.00.0100.03010.71
5.1.60.0130.0309.88
5.1.50.0230.0509.89
5.1.40.0130.0309.95
5.1.30.0100.05710.24
5.1.20.0130.04010.26
5.1.10.0130.0479.95
5.1.00.0100.0339.95
5.0.50.0030.0278.51
5.0.40.0130.0178.51
5.0.30.0070.0408.34
5.0.20.0070.0278.08
5.0.10.0200.0308.25
5.0.00.0130.0578.20
4.4.90.0070.0337.91
4.4.80.0030.0277.91
4.4.70.0100.0177.91
4.4.60.0070.0277.91
4.4.50.0070.0237.91
4.4.40.0070.0477.91
4.4.30.0070.0307.91
4.4.20.0070.0377.91
4.4.10.0070.0177.91
4.4.00.0030.0277.91
4.3.110.0070.0177.91
4.3.100.0130.0107.91
4.3.90.0030.0177.91
4.3.80.0070.0277.91
4.3.70.0030.0177.91
4.3.60.0030.0177.91
4.3.50.0100.0107.91
4.3.40.0030.0237.91
4.3.30.0000.0177.91
4.3.20.0000.0177.91
4.3.10.0030.0177.91
4.3.00.0000.0177.91

preferences:
46.05 ms | 401 KiB | 5 Q