3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo strtolower(preg_replace('/([A-Z])/', '_$1', 'camelCaseString'));

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)
8.3.60.0180.00318.43
8.3.50.0100.00821.14
8.3.40.0140.00718.70
8.3.30.0110.00720.29
8.3.20.0040.00420.52
8.3.10.0050.00320.95
8.3.00.0000.00823.48
8.2.180.0060.01216.50
8.2.170.0100.00722.96
8.2.160.0140.00020.53
8.2.150.0030.00524.18
8.2.140.0000.00724.66
8.2.130.0080.00026.16
8.2.120.0050.00321.17
8.2.110.0070.00320.26
8.2.100.0110.00017.85
8.2.90.0000.00718.03
8.2.80.0000.00719.34
8.2.70.0040.00417.75
8.2.60.0080.00017.92
8.2.50.0050.00318.07
8.2.40.0000.00918.16
8.2.30.0000.00919.43
8.2.20.0050.00217.77
8.2.10.0000.00717.77
8.2.00.0070.00017.80
8.1.280.0070.00725.92
8.1.270.0000.00823.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00422.19
8.1.230.0060.00622.67
8.1.220.0060.00317.74
8.1.210.0080.00018.96
8.1.200.0090.00017.34
8.1.190.0050.00317.28
8.1.180.0040.00418.10
8.1.170.0080.00018.59
8.1.160.0000.00718.88
8.1.150.0070.00318.76
8.1.140.0000.00817.46
8.1.130.0070.00017.65
8.1.120.0070.00017.47
8.1.110.0000.00717.45
8.1.100.0030.00417.42
8.1.90.0040.00417.36
8.1.80.0000.00817.48
8.1.70.0000.00717.43
8.1.60.0030.00717.54
8.1.50.0040.00417.44
8.1.40.0040.00417.43
8.1.30.0000.00717.56
8.1.20.0080.00017.57
8.1.10.0040.00417.61
8.1.00.0080.00017.57
8.0.300.0030.00320.07
8.0.290.0070.00016.93
8.0.280.0040.00418.32
8.0.270.0070.00017.17
8.0.260.0000.00716.89
8.0.250.0000.00717.05
8.0.240.0080.00017.03
8.0.230.0000.00716.94
8.0.220.0020.00516.95
8.0.210.0000.00716.94
8.0.200.0030.00316.83
8.0.190.0050.00216.94
8.0.180.0030.00316.95
8.0.170.0040.00416.89
8.0.160.0000.00716.95
8.0.150.0000.00716.81
8.0.140.0060.00616.77
8.0.130.0030.00313.33
8.0.120.0000.00716.77
8.0.110.0040.00416.96
8.0.100.0040.00416.94
8.0.90.0000.00816.90
8.0.80.0090.00616.86
8.0.70.0000.00716.95
8.0.60.0000.00816.70
8.0.50.0040.00416.85
8.0.30.0140.00517.20
8.0.20.0160.00517.40
8.0.10.0000.00717.02
8.0.00.0090.01116.82
7.4.330.0060.00016.81
7.4.320.0030.00316.66
7.4.300.0030.00316.68
7.4.290.0030.00316.68
7.4.280.0030.00316.51
7.4.270.0000.00616.63
7.4.260.0050.00013.33
7.4.250.0000.00716.54
7.4.240.0040.00316.68
7.4.230.0070.00016.69
7.4.220.0160.00316.54
7.4.210.0040.01116.55
7.4.200.0030.00316.49
7.4.190.0040.00416.76
7.4.160.0160.00816.79
7.4.150.0070.01117.40
7.4.140.0090.01017.86
7.4.130.0090.00916.65
7.4.120.0100.00716.64
7.4.110.0090.00916.45
7.4.100.0090.01516.47
7.4.90.0160.00716.64
7.4.80.0110.00619.39
7.4.70.0090.00916.56
7.4.60.0050.01316.75
7.4.50.0000.00716.66
7.4.40.0030.01522.77
7.4.30.0150.00316.63
7.4.00.0060.01015.05
7.3.330.0000.00813.21
7.3.320.0030.00313.04
7.3.310.0030.00316.38
7.3.300.0000.00816.22
7.3.290.0000.01416.31
7.3.280.0130.00716.28
7.3.270.0070.01317.40
7.3.260.0120.00818.24
7.3.250.0070.01016.43
7.3.240.0090.01316.61
7.3.230.0100.00716.58
7.3.210.0140.00316.33
7.3.200.0070.01519.39
7.3.190.0100.00716.25
7.3.180.0080.00816.54
7.3.170.0110.00516.46
7.3.160.0040.01816.37
7.3.120.0030.01315.03
7.3.10.0040.01216.60
7.3.00.0140.00416.58
7.2.330.0120.00616.71
7.2.320.0000.01716.62
7.2.310.0180.00016.51
7.2.300.0090.00716.70
7.2.290.0060.00916.53
7.2.130.0040.00716.80
7.2.120.0000.01416.42
7.2.110.0000.01616.62
7.2.100.0070.00716.83
7.2.90.0130.00316.88
7.2.80.0040.01116.70
7.2.70.0030.00916.74
7.2.60.0120.00616.83
7.2.50.0030.01216.71
7.2.40.0040.01116.77
7.2.30.0090.00616.78
7.2.20.0030.00916.80
7.2.10.0070.00417.05
7.2.00.0110.00718.01
7.1.250.0090.00615.71
7.1.100.0060.00618.32
7.1.70.0030.00617.09
7.1.60.0090.01219.17
7.1.50.0060.01317.03
7.1.00.0070.03022.48
7.0.200.0000.00716.92
7.0.140.0070.07021.96
7.0.80.0100.03719.97
7.0.70.0430.03720.11
7.0.60.0070.03720.01
7.0.50.0470.08320.31
7.0.40.0000.04320.13
7.0.30.0030.04320.09
7.0.20.0030.04720.09
7.0.10.0070.04720.10
7.0.00.0130.04020.09
5.6.280.0030.07320.85
5.6.230.0070.04020.49
5.6.220.0000.05020.55
5.6.210.0030.04020.68
5.6.200.0100.04321.11
5.6.190.0000.04721.13
5.6.180.0030.07321.07
5.6.170.0030.04321.05
5.6.160.0170.05020.94
5.6.150.0070.04321.05
5.6.140.0000.04720.94
5.6.130.0070.04321.07
5.6.120.0070.06321.16
5.6.110.0100.04021.02
5.6.100.0070.04021.01
5.6.90.0130.03320.99
5.6.80.0030.04320.34
5.6.70.0030.04020.31
5.6.60.0030.04020.40
5.6.50.0070.03320.39
5.6.40.0130.07720.38
5.6.30.0100.07320.46
5.6.20.0100.07020.42
5.6.10.0170.06720.48
5.6.00.0030.04320.32
5.5.370.0130.06020.43
5.5.360.0070.03720.40
5.5.350.0000.04320.41
5.5.340.0030.07020.72
5.5.330.0000.04320.86
5.5.320.0100.03320.91
5.5.310.0030.04720.75
5.5.300.0000.04020.75
5.5.290.0070.04320.85
5.5.280.0030.04020.90
5.5.270.0030.04020.81
5.5.260.0100.04020.86
5.5.250.0030.04020.63
5.5.240.0070.03720.23
5.5.230.0030.04320.25
5.5.220.0070.03320.23
5.5.210.0030.04020.19
5.5.200.0000.05320.11
5.5.190.0070.08720.09
5.5.180.0130.07320.22
5.5.160.0170.07320.21
5.5.150.0070.04720.25
5.5.140.0030.06720.14
5.5.130.0070.05720.07
5.5.120.0130.07020.21
5.5.110.0030.05320.25
5.5.100.0070.05720.06
5.5.90.0030.08020.09
5.5.80.0130.06019.94
5.5.70.0130.07720.08
5.5.60.0000.06320.07
5.5.50.0100.08319.99
5.5.40.0130.06719.98
5.5.30.0000.07019.91
5.5.20.0100.04320.14
5.5.10.0070.07719.97
5.5.00.0000.09020.02
5.4.450.0070.03719.38
5.4.440.0030.04019.32
5.4.430.0000.04319.11
5.4.420.0070.03719.34
5.4.410.0070.04319.32
5.4.400.0070.03019.05
5.4.390.0070.03018.98
5.4.380.0030.03719.10
5.4.370.0000.04019.14
5.4.360.0200.07019.12
5.4.350.0170.07019.11
5.4.340.0070.06018.90
5.4.320.0070.04318.98
5.4.310.0030.05319.05
5.4.300.0030.05718.80
5.4.290.0030.07019.11
5.4.280.0100.06719.11
5.4.270.0000.05318.94
5.4.260.0100.07318.97
5.4.250.0070.05719.14
5.4.240.0030.08319.13
5.4.230.0030.04718.78
5.4.220.0130.05018.78
5.4.210.0030.05318.90
5.4.200.0130.07718.95
5.4.190.0070.07719.22
5.4.180.0070.08319.07
5.4.170.0000.05719.01
5.4.160.0170.07019.05
5.4.150.0070.07718.79
5.4.140.0070.07716.29
5.4.130.0130.04316.11
5.4.120.0070.05016.06
5.4.110.0030.09316.29
5.4.100.0130.05716.38
5.4.90.0030.05016.42
5.4.80.0070.07016.31
5.4.70.0100.08016.29
5.4.60.0100.05016.41
5.4.50.0100.07716.41
5.4.40.0070.07716.23
5.4.30.0100.07716.29
5.4.20.0100.08016.30
5.4.10.0070.05316.18
5.4.00.0030.07315.72
5.3.290.0000.05314.65
5.3.280.0070.07714.55
5.3.270.0130.07714.54
5.3.260.0200.04314.59
5.3.250.0070.05314.59
5.3.240.0130.07314.54
5.3.230.0070.07714.45
5.3.220.0070.07014.52
5.3.210.0170.07014.55
5.3.200.0070.04714.52
5.3.190.0130.07314.42
5.3.180.0000.05714.42
5.3.170.0100.08014.39
5.3.160.0070.07314.43
5.3.150.0070.08714.52
5.3.140.0030.08014.40
5.3.130.0070.04714.38
5.3.120.0070.03714.38
5.3.110.0170.06314.50
5.3.100.0130.07014.04
5.3.90.0100.04314.02
5.3.80.0100.04713.77
5.3.70.0130.03713.78
5.3.60.0070.07313.98
5.3.50.0030.05313.93
5.3.40.0070.08013.70
5.3.30.0030.05313.86
5.3.20.0030.04013.59
5.3.10.0100.04313.61
5.3.00.0130.06713.54
5.2.170.0070.03711.75
5.2.160.0000.07011.75
5.2.150.0130.06011.75
5.2.140.0130.03711.75
5.2.130.0070.05711.75
5.2.120.0000.06311.75
5.2.110.0030.06311.75
5.2.100.0100.04011.75
5.2.90.0000.06311.75
5.2.80.0100.06311.75
5.2.70.0070.06311.75
5.2.60.0130.04311.75
5.2.50.0100.05711.75
5.2.40.0030.06711.75
5.2.30.0100.05011.75
5.2.20.0030.04311.75
5.2.10.0130.03011.75
5.2.00.0100.05311.75
5.1.60.0030.05311.75
5.1.50.0100.04311.75
5.1.40.0000.06711.75
5.1.30.0030.06011.75
5.1.20.0000.04311.75
5.1.10.0030.05311.75
5.1.00.0130.04011.75
5.0.50.0030.05011.75
5.0.40.0070.03711.75
5.0.30.0030.03311.75
5.0.20.0100.03711.75
5.0.10.0130.02011.75
5.0.00.0000.04311.75
4.4.90.0030.03311.75
4.4.80.0070.02011.75
4.4.70.0030.01711.75
4.4.60.0000.03711.75
4.4.50.0030.02711.75
4.4.40.0000.04711.75
4.4.30.0030.01711.75
4.4.20.0030.02711.75
4.4.10.0070.03711.75
4.4.00.0030.04711.75
4.3.110.0000.02311.75
4.3.100.0000.02011.75
4.3.90.0000.03311.75
4.3.80.0030.05711.75
4.3.70.0030.02311.75
4.3.60.0030.03011.75
4.3.50.0000.03311.75
4.3.40.0030.04011.75
4.3.30.0070.03011.75
4.3.20.0000.03711.75
4.3.10.0000.02011.75
4.3.00.0070.02011.75

preferences:
43.78 ms | 400 KiB | 5 Q