3v4l.org

run code in 300+ PHP versions simultaneously
<?php function _convertToCamelCase(array $matches) { return ucfirst($matches[1]); } $key = 'valami_underscored_cucc'; echo preg_replace_callback( '/_(\w)/', '_convertToCamelCase', $key);

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)
8.3.60.0090.00918.28
8.3.50.0050.01222.12
8.3.40.0060.00919.09
8.3.30.0030.01419.05
8.3.20.0000.00820.16
8.3.10.0040.00420.77
8.3.00.0000.00819.53
8.2.180.0120.00316.75
8.2.170.0070.00722.96
8.2.160.0070.00720.35
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0030.00526.16
8.2.120.0080.00022.10
8.2.110.0090.00022.34
8.2.100.0110.00017.91
8.2.90.0000.00919.17
8.2.80.0040.00417.97
8.2.70.0040.00417.63
8.2.60.0060.00317.92
8.2.50.0000.00918.07
8.2.40.0040.00418.22
8.2.30.0040.00419.38
8.2.20.0000.00817.91
8.2.10.0000.00817.96
8.2.00.0030.00617.71
8.1.280.0080.00825.92
8.1.270.0000.00822.19
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0060.00323.91
8.1.230.0060.00618.97
8.1.220.0080.00017.74
8.1.210.0080.00018.77
8.1.200.0070.00317.36
8.1.190.0040.00417.48
8.1.180.0030.00518.10
8.1.170.0100.00018.72
8.1.160.0000.00821.89
8.1.150.0040.00418.79
8.1.140.0000.00717.54
8.1.130.0000.00717.73
8.1.120.0040.00417.57
8.1.110.0000.00717.54
8.1.100.0040.00417.61
8.1.90.0040.00317.59
8.1.80.0040.00417.46
8.1.70.0070.00017.53
8.1.60.0030.00617.60
8.1.50.0020.00517.50
8.1.40.0000.00817.59
8.1.30.0040.00417.70
8.1.20.0040.00417.80
8.1.10.0060.00317.68
8.1.00.0000.00817.69
8.0.300.0030.00518.77
8.0.290.0030.00516.88
8.0.280.0000.00718.53
8.0.270.0000.00717.28
8.0.260.0050.00317.22
8.0.250.0070.00017.06
8.0.240.0050.00217.08
8.0.230.0070.00017.11
8.0.220.0050.00316.88
8.0.210.0000.00716.91
8.0.200.0030.00316.95
8.0.190.0000.00716.93
8.0.180.0030.00416.98
8.0.170.0000.00716.89
8.0.160.0040.00416.93
8.0.150.0000.00716.93
8.0.140.0030.00616.90
8.0.130.0050.00013.42
8.0.120.0000.00817.00
8.0.110.0000.00816.94
8.0.100.0040.00416.80
8.0.90.0080.00016.96
8.0.80.0070.00916.96
8.0.70.0030.00517.03
8.0.60.0050.00316.78
8.0.50.0040.00417.01
8.0.30.0130.00617.22
8.0.20.0120.00717.40
8.0.10.0000.00716.95
8.0.00.0130.00616.83
7.4.330.0000.00515.04
7.4.320.0040.00416.77
7.4.300.0000.00616.66
7.4.290.0040.00416.56
7.4.280.0030.00316.63
7.4.270.0000.00716.66
7.4.260.0000.00716.64
7.4.250.0040.00416.58
7.4.240.0040.00416.60
7.4.230.0000.00716.65
7.4.220.0120.01316.83
7.4.210.0070.01016.68
7.4.200.0050.00216.56
7.4.160.0060.00916.64
7.4.150.0100.00917.40
7.4.140.0030.01517.86
7.4.130.0110.00616.61
7.4.120.0070.00916.70
7.4.110.0090.00616.70
7.4.100.0060.01216.41
7.4.90.0120.01216.87
7.4.80.0100.01316.57
7.4.70.0130.01316.70
7.4.60.0080.00816.46
7.4.50.0060.00316.53
7.4.40.0130.00416.48
7.4.30.0140.00316.77
7.4.00.0040.00815.04
7.3.330.0060.00013.39
7.3.320.0030.00313.42
7.3.310.0000.00616.43
7.3.300.0020.00516.27
7.3.290.0030.01316.30
7.3.280.0080.00916.43
7.3.270.0090.01217.40
7.3.260.0030.01516.76
7.3.250.0060.01416.37
7.3.240.0140.00416.77
7.3.230.0150.00316.39
7.3.210.0070.01816.93
7.3.200.0090.01219.39
7.3.190.0070.01016.88
7.3.180.0100.00716.43
7.3.170.0120.00916.40
7.3.160.0080.00816.41
7.2.330.0130.00316.71
7.2.320.0000.01716.68
7.2.310.0060.01416.70
7.2.300.0100.00716.72
7.2.290.0030.01516.69
7.2.60.0240.00916.82
7.2.00.0100.00019.54
7.1.200.0060.00616.10
7.1.100.0340.00317.54
7.1.70.0000.00717.33
7.1.60.0070.01819.32
7.1.50.0040.02117.21
7.1.00.0100.07022.45
7.0.200.0120.00416.84
7.0.140.0100.08721.95
7.0.60.0000.07319.82
7.0.50.0070.03717.88
7.0.40.0000.05019.98
7.0.30.0230.07720.11
7.0.20.0270.06320.32
7.0.10.0030.08720.35
7.0.00.0070.07320.25
5.6.280.0030.07321.02
5.6.210.0000.08720.67
5.6.200.0070.08018.16
5.6.190.0070.04320.51
5.6.180.0200.04320.55
5.6.170.0370.07020.39
5.6.160.0130.07720.50
5.6.150.0130.07318.19
5.6.140.0000.07318.17
5.6.130.0030.05018.27
5.6.120.0100.06021.12
5.6.110.0130.06320.96
5.6.100.0230.05021.01
5.6.90.0170.07320.97
5.6.80.0130.06020.36
5.5.350.0130.09020.36
5.5.340.0030.05317.95
5.5.330.0130.04720.38
5.5.320.0200.04320.36
5.5.310.0270.07720.27
5.5.300.0070.04318.06
5.5.290.0070.07017.95
5.5.280.0030.07020.64
5.5.270.0030.04320.76
5.5.260.0070.08320.68
5.5.250.0070.03720.77
5.5.240.0030.06720.15
5.4.450.3630.04019.57
5.4.440.0070.07719.41
5.4.430.0030.04019.40
5.4.420.0130.07019.54
5.4.410.3570.03019.36
5.4.400.2900.03718.95
5.4.390.4130.03719.21
5.4.380.3670.02318.95
5.4.370.0070.03318.98
5.4.360.0000.08019.20
5.4.350.3870.03718.99
5.4.340.1600.04019.00
5.4.320.2930.03719.32
5.4.310.3530.03318.87
5.4.300.3670.02719.13
5.4.290.3600.04018.98
5.4.280.3700.03319.09
5.4.270.2630.04019.15
5.4.260.3300.03319.04
5.4.250.3400.04018.99
5.4.240.3500.03018.84
5.4.230.3470.04019.14
5.4.220.3300.04018.97
5.4.210.3230.03318.98
5.4.200.3500.03319.23
5.4.190.3530.04019.13
5.4.180.3900.03718.84
5.4.170.3430.04319.30
5.4.160.3500.03719.25
5.4.150.3930.03719.13
5.4.140.3700.04316.44
5.4.130.3730.02716.46
5.4.120.3430.04016.72
5.4.110.3530.03716.45
5.4.100.3530.03316.50
5.4.90.3600.03016.59
5.4.80.3500.03316.60
5.4.70.3470.03716.55
5.4.60.3500.03016.56
5.4.50.3570.03316.49
5.4.40.3770.03316.51
5.4.30.3700.03316.53
5.4.20.3500.03316.55
5.4.10.3200.03716.48
5.4.00.3570.03715.88
5.3.290.3830.03714.67
5.3.280.3470.04014.49
5.3.270.3330.03714.62
5.3.260.3570.03714.61
5.3.250.3530.03714.68
5.3.240.3530.04014.61
5.3.230.3770.03714.82
5.3.220.3570.03014.55
5.3.210.3300.04014.58
5.3.200.3570.03314.48
5.3.190.3570.04014.58
5.3.180.3900.03314.46
5.3.170.3600.03714.64
5.3.160.3570.03314.54
5.3.150.3970.03014.72
5.3.140.3600.03714.56
5.3.130.3670.03714.52
5.3.120.3300.03714.55
5.3.110.3530.03314.55
5.3.100.3630.03714.04
5.3.90.3670.03314.02
5.3.80.3900.04013.92
5.3.70.3800.03714.02
5.3.60.3870.03014.02
5.3.50.3670.03314.06
5.3.40.4370.04014.05
5.3.30.4000.04013.82
5.3.20.3700.03313.68
5.3.10.3400.03313.57
5.3.00.4000.03713.64
5.2.170.3700.02711.05
5.2.160.3200.03011.07
5.2.150.3330.02711.15
5.2.140.3770.02711.05
5.2.130.3000.03311.07
5.2.120.3230.03011.22
5.2.110.3570.03311.25
5.2.100.2930.03311.05
5.2.90.3130.02711.07
5.2.80.3130.03710.96
5.2.70.3330.02311.27
5.2.60.3170.02310.97
5.2.50.3170.02711.25
5.2.40.2470.02011.07
5.2.30.2530.03010.89
5.2.20.2570.03010.92
5.2.10.2430.02710.88
5.2.00.2430.02310.68
5.1.60.2430.02310.11
5.1.50.2470.0209.97
5.1.40.2570.0279.86
5.1.30.2530.02310.25
5.1.20.2470.02710.42
5.1.10.2430.02310.22
5.1.00.2530.02310.04
5.0.50.1500.0208.48
5.0.40.1330.0178.30
5.0.30.1300.0278.20
5.0.20.1200.0208.28
5.0.10.1430.0208.17
5.0.00.1270.0238.16
4.4.90.1400.0136.06
4.4.80.1200.0136.06
4.4.70.1330.0176.06
4.4.60.1470.0206.06
4.4.50.1200.0176.06
4.4.40.1370.0276.06
4.4.30.1270.0176.06
4.4.20.1170.0206.06
4.4.10.1300.0106.06
4.4.00.1230.0236.06
4.3.110.1230.0206.06
4.3.100.1330.0176.06
4.3.90.1200.0176.06
4.3.80.1170.0276.06
4.3.70.1200.0176.06
4.3.60.1230.0136.06
4.3.50.1230.0136.06
4.3.40.1200.0236.06
4.3.30.0600.0176.06
4.3.20.0600.0136.06
4.3.10.0570.0176.06
4.3.00.0670.0206.06

preferences:
37.76 ms | 401 KiB | 5 Q