3v4l.org

run code in 300+ PHP versions simultaneously
<?php function _convertToCamelCase(array $matches) { return ucfirst($matches[1]); } $key = 'valami_underscored_cucc'; $keys = array( 'valami' ); foreach ($keys as $key) { 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)
8.3.60.0100.01018.33
8.3.50.0140.00722.02
8.3.40.0210.00019.09
8.3.30.0070.00719.09
8.3.20.0150.00020.16
8.3.10.0080.00020.79
8.3.00.0000.00819.54
8.2.180.0070.00718.44
8.2.170.0070.01022.96
8.2.160.0100.00320.52
8.2.150.0030.00524.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0040.00422.20
8.2.110.0070.00420.19
8.2.100.0110.00017.91
8.2.90.0040.00419.27
8.2.80.0000.00817.97
8.2.70.0060.00317.75
8.2.60.0000.00818.04
8.2.50.0040.00418.07
8.2.40.0070.00017.91
8.2.30.0040.00419.15
8.2.20.0000.00717.71
8.2.10.0000.00818.08
8.2.00.0040.00417.71
8.1.280.0090.00625.92
8.1.270.0030.00522.24
8.1.260.0000.00726.35
8.1.250.0050.00328.09
8.1.240.0100.00021.09
8.1.230.0040.00719.15
8.1.220.0040.00417.74
8.1.210.0030.00718.77
8.1.200.0080.00017.48
8.1.190.0040.00417.47
8.1.180.0080.00018.10
8.1.170.0090.00318.84
8.1.160.0000.00722.04
8.1.150.0000.00718.91
8.1.140.0040.00417.60
8.1.130.0000.00717.92
8.1.120.0040.00417.61
8.1.110.0080.00017.58
8.1.100.0070.00017.60
8.1.90.0000.00817.51
8.1.80.0000.00717.57
8.1.70.0000.00717.55
8.1.60.0000.00817.71
8.1.50.0000.00917.67
8.1.40.0050.00317.66
8.1.30.0030.00617.73
8.1.20.0040.00417.82
8.1.10.0040.00417.68
8.1.00.0000.00717.63
8.0.300.0060.00318.77
8.0.290.0040.00416.75
8.0.280.0030.00318.34
8.0.270.0030.00317.20
8.0.260.0040.00417.28
8.0.250.0040.00416.96
8.0.240.0030.00317.09
8.0.230.0030.00317.12
8.0.220.0030.00316.90
8.0.210.0030.00317.03
8.0.200.0030.00316.97
8.0.190.0060.00317.09
8.0.180.0040.00417.12
8.0.170.0060.00317.09
8.0.160.0040.00416.86
8.0.150.0070.00016.80
8.0.140.0000.01017.00
8.0.130.0000.00513.38
8.0.120.0060.00317.00
8.0.110.0040.00416.88
8.0.100.0040.00416.99
8.0.90.0080.00016.95
8.0.80.0040.01117.07
8.0.70.0000.00717.08
8.0.60.0040.00417.04
8.0.50.0000.00716.83
8.0.30.0080.01017.25
8.0.20.0100.00717.42
8.0.10.0000.00717.16
8.0.00.0100.00816.92
7.4.330.0030.00315.20
7.4.320.0000.00616.70
7.4.300.0000.00616.82
7.4.290.0070.00016.71
7.4.280.0030.00516.71
7.4.270.0030.00316.75
7.4.260.0060.00616.84
7.4.250.0030.00616.70
7.4.240.0020.00516.70
7.4.230.0000.00716.84
7.4.220.0090.01316.74
7.4.210.0080.00816.75
7.4.200.0030.00316.88
7.4.160.0060.00916.74
7.4.150.0060.01217.40
7.4.140.0090.01117.86
7.4.130.0100.00816.61
7.4.120.0090.00716.64
7.4.110.0100.00716.55
7.4.100.0070.01416.58
7.4.90.0160.00016.68
7.4.80.0150.00316.52
7.4.70.0140.00316.54
7.4.60.0140.00316.66
7.4.50.0030.00516.68
7.4.40.0100.00616.64
7.4.30.0110.00616.74
7.4.00.0130.00315.23
7.3.330.0000.00513.31
7.3.320.0000.00513.47
7.3.310.0030.00316.46
7.3.300.0030.00316.40
7.3.290.0070.00716.57
7.3.280.0100.00716.45
7.3.270.0080.00817.40
7.3.260.0110.00716.52
7.3.250.0140.00316.55
7.3.240.0120.00616.62
7.3.230.0090.00916.86
7.3.210.0030.01316.44
7.3.200.0090.01419.39
7.3.190.0000.01816.66
7.3.180.0060.00916.84
7.3.170.0040.01216.71
7.3.160.0090.00616.52
7.3.10.0120.00016.73
7.3.00.0000.01016.93
7.2.330.0060.01216.82
7.2.320.0100.00616.79
7.2.310.0030.01416.94
7.2.300.0070.01016.85
7.2.290.0040.01316.73
7.2.130.0050.00516.81
7.2.120.0030.00917.01
7.2.110.0060.00316.71
7.2.100.0090.00617.08
7.2.90.0040.00817.00
7.2.80.0000.01217.13
7.2.70.0040.00717.01
7.2.60.0080.00517.13
7.2.50.0070.00617.12
7.2.40.0000.01317.14
7.2.30.0000.01116.99
7.2.20.0060.00916.86
7.2.10.0090.00617.23
7.2.00.0030.01218.23
7.1.250.0040.00816.00
7.1.100.0050.01318.21
7.1.70.0060.00317.20
7.1.60.0060.01519.32
7.1.50.0070.00417.10
7.1.00.0070.06722.37
7.0.200.0030.00616.60
7.0.140.0000.07022.18
7.0.60.0100.08320.02
7.0.50.0070.08317.95
7.0.40.0070.09020.07
7.0.30.0170.04320.25
7.0.20.0300.06320.11
7.0.10.0100.08720.35
7.0.00.0030.08320.25
5.6.280.0030.07321.08
5.6.210.0000.07020.71
5.6.200.0100.07718.18
5.6.190.0030.07720.43
5.6.180.0570.05720.68
5.6.170.0330.08020.46
5.6.160.0130.06720.54
5.6.150.0030.08718.25
5.6.140.0130.07318.24
5.6.130.0030.06718.18
5.6.120.0030.06020.92
5.6.110.0130.06320.99
5.6.100.0170.07321.03
5.6.90.0230.06021.08
5.6.80.0100.04720.38
5.5.350.0170.02720.41
5.5.340.0030.08717.95
5.5.330.0070.06020.47
5.5.320.0300.08320.34
5.5.310.0200.05720.34
5.5.300.0100.08317.99
5.5.290.0070.03717.93
5.5.280.0030.05720.96
5.5.270.0100.07320.79
5.5.260.0000.08320.79
5.5.250.0070.04320.58
5.5.240.0170.07320.25
5.4.450.0270.04019.33
5.4.440.0370.07319.54
5.4.430.0430.05719.49
5.4.420.0400.06319.47
5.4.410.0270.07319.33
5.4.400.0270.05719.07
5.4.390.0330.04019.22
5.4.380.0300.04019.16
5.4.370.0270.07019.16
5.4.360.0230.04319.16
5.4.350.0230.07018.95
5.4.340.0370.03318.97
5.4.320.0230.05019.14
5.4.310.0200.03718.84
5.4.300.0270.05018.83
5.4.290.0270.04019.33
5.4.280.0200.07019.00
5.4.270.0330.06019.30
5.4.260.0200.04318.99
5.4.250.0270.05718.97
5.4.240.0230.03318.96
5.4.230.0230.04718.88
5.4.220.0300.04018.84
5.4.210.0170.04019.21
5.4.200.0200.03719.31
5.4.190.0270.04018.96
5.4.180.0270.03018.83
5.4.170.0200.03719.05
5.4.160.0230.03719.14
5.4.150.0130.04318.82
5.4.140.0300.05016.37
5.4.130.0230.04716.39
5.4.120.0130.04016.49
5.4.110.0230.03316.63
5.4.100.0230.04016.56
5.4.90.0230.03016.61
5.4.80.0270.05316.49
5.4.70.0170.05016.39
5.4.60.0270.05316.43
5.4.50.0270.05016.42
5.4.40.0230.04316.34
5.4.30.0230.05316.24
5.4.20.0270.03016.16
5.4.10.0200.03716.57
5.4.00.0300.06315.80
5.3.290.0200.04014.53
5.3.280.0170.04014.59
5.3.270.0200.04014.53
5.3.260.0230.03714.71
5.3.250.0330.03014.68
5.3.240.0300.04314.48
5.3.230.0200.04014.60
5.3.220.0270.03714.58
5.3.210.0200.04014.62
5.3.200.0330.07014.53
5.3.190.0230.05714.79
5.3.180.0370.04714.54
5.3.170.0200.04314.42
5.3.160.0270.03014.79
5.3.150.0200.03714.57
5.3.140.0230.06314.58
5.3.130.0200.05714.54
5.3.120.0230.03714.62
5.3.110.0300.07014.46
5.3.100.0300.04014.04
5.3.90.0300.06014.10
5.3.80.0270.04714.07
5.3.70.0230.06314.10
5.3.60.0300.06714.15
5.3.50.0270.07313.86
5.3.40.0300.07013.95
5.3.30.0270.03714.04
5.3.20.0270.06013.61
5.3.10.0370.03713.57
5.3.00.0400.04013.57
5.2.170.0170.05011.12
5.2.160.0270.06011.15
5.2.150.0200.03311.12
5.2.140.0430.04011.12
5.2.130.0230.03711.15
5.2.120.0300.04711.05
5.2.110.0230.03711.01
5.2.100.0230.06011.32
5.2.90.0300.04011.11
5.2.80.0230.04711.24
5.2.70.0300.05311.32
5.2.60.0330.04711.27
5.2.50.0270.04711.10
5.2.40.0170.06011.22
5.2.30.0170.03310.98
5.2.20.0170.03011.18
5.2.10.0200.06010.78
5.2.00.0200.05010.82
5.1.60.0200.04310.00
5.1.50.0200.0239.93
5.1.40.0230.0239.87
5.1.30.0200.03310.31
5.1.20.0270.04710.42
5.1.10.0170.04310.20
5.1.00.0200.02310.22
5.0.50.0170.0308.54
5.0.40.0100.0208.63
5.0.30.0070.0578.30
5.0.20.0100.0308.09
5.0.10.0070.0378.09
5.0.00.0130.0538.07
4.4.90.0130.0277.72
4.4.80.0100.0307.72
4.4.70.0130.0277.72
4.4.60.0130.0337.72
4.4.50.0170.0277.72
4.4.40.0070.0407.72
4.4.30.0070.0237.72
4.4.20.0130.0337.72
4.4.10.0100.0377.72
4.4.00.0070.0437.72
4.3.110.0100.0237.72
4.3.100.0130.0177.72
4.3.90.0130.0177.72
4.3.80.0100.0377.72
4.3.70.0100.0277.72
4.3.60.0130.0207.72
4.3.50.0100.0277.72
4.3.40.0100.0277.72
4.3.30.0030.0207.72
4.3.20.0100.0277.72
4.3.10.0030.0277.72
4.3.00.0070.0337.72

preferences:
45.67 ms | 404 KiB | 6 Q