3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = "Test-test1"; $match = preg_replace('/(?<=^|[\x09\x20\x2D])./e', 'strtoupper("\0")', $test); var_dump($match); $match = preg_replace_callback('/(?<=^|[\x09\x20\x2D])./', function($matches) {return strtoupper($matches[0]);}, $test); var_dump($match);

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)
8.3.60.0160.00318.80
8.3.50.0130.00316.71
8.3.40.0090.00918.96
8.3.30.0120.00618.87
8.3.20.0050.00318.82
8.3.10.0030.00520.64
8.3.00.0040.00419.51
8.2.180.0100.00716.75
8.2.170.0140.00722.96
8.2.160.0040.01119.21
8.2.150.0180.00324.18
8.2.140.0110.00024.66
8.2.130.0080.00026.16
8.2.120.0070.00019.95
8.2.110.0060.00322.14
8.2.100.0040.00718.03
8.2.90.0060.00319.36
8.2.80.0000.00818.05
8.2.70.0040.00417.88
8.2.60.0030.00517.90
8.2.50.0000.00818.07
8.2.40.0040.00418.34
8.2.30.0060.00618.18
8.2.20.0040.00417.85
8.2.10.0000.00817.89
8.2.00.0030.00517.78
8.1.280.0070.00725.92
8.1.270.0000.00823.99
8.1.260.0000.00826.35
8.1.250.0000.00928.09
8.1.240.0060.00322.51
8.1.230.0080.00320.64
8.1.220.0000.00818.77
8.1.210.0060.00319.03
8.1.200.0060.00317.50
8.1.190.0040.00417.63
8.1.180.0000.00918.10
8.1.170.0070.00018.89
8.1.160.0020.00518.88
8.1.150.0000.00718.71
8.1.140.0000.00717.48
8.1.130.0000.00717.82
8.1.120.0040.00417.63
8.1.110.0050.00317.60
8.1.100.0000.00817.62
8.1.90.0000.00717.60
8.1.80.0000.00717.63
8.1.70.0030.00317.59
8.1.60.0030.00617.77
8.1.50.0030.00517.65
8.1.40.0040.00417.67
8.1.30.0040.00417.64
8.1.20.0090.00017.81
8.1.10.0030.00617.67
8.1.00.0050.00317.56
8.0.300.0030.00619.86
8.0.290.0000.00716.88
8.0.280.0050.00318.32
8.0.270.0030.00317.29
8.0.260.0030.00316.93
8.0.250.0000.00716.98
8.0.240.0030.00517.11
8.0.230.0000.00717.01
8.0.220.0030.00417.01
8.0.210.0040.00216.91
8.0.200.0000.00717.13
8.0.190.0030.00617.17
8.0.180.0040.00417.14
8.0.170.0090.00017.03
8.0.160.0000.00817.02
8.0.150.0090.00017.11
8.0.140.0000.01017.10
8.0.130.0000.00513.48
8.0.120.0040.00416.96
8.0.110.0040.00417.16
8.0.100.0040.00416.99
8.0.90.0070.00017.12
8.0.80.0040.01117.10
8.0.70.0080.00017.04
8.0.60.0040.00416.90
8.0.50.0050.00216.93
8.0.30.0100.00817.36
8.0.20.0130.00917.22
8.0.10.0050.00217.28
8.0.00.0050.01316.94
7.4.330.0000.00614.90
7.4.320.0070.00016.71
7.4.300.0000.00716.85
7.4.290.0030.00316.58
7.4.280.0070.00016.71
7.4.270.0030.00316.71
7.4.260.0000.00513.49
7.4.250.0040.00416.79
7.4.240.0030.00516.57
7.4.230.0070.00016.82
7.4.220.0140.00716.70
7.4.210.0050.01416.80
7.4.200.0000.00716.60
7.4.190.0030.00316.62
7.4.160.0060.01016.60
7.4.150.0070.01017.18
7.4.140.0090.01017.30
7.4.130.0080.01116.72
7.4.120.0080.00816.60
7.4.110.0140.00316.57
7.4.100.0070.01016.71
7.4.90.0140.00716.75
7.4.80.0080.00818.80
7.4.70.0060.01216.67
7.4.60.0080.01216.70
7.4.50.0040.00416.77
7.4.40.0100.00322.27
7.4.30.0120.00916.80
7.4.00.0110.00315.16
7.3.330.0030.00313.38
7.3.320.0000.00513.36
7.3.310.0040.00416.41
7.3.300.0040.00416.39
7.3.290.0030.01616.44
7.3.280.0100.00516.46
7.3.270.0030.01217.18
7.3.260.0080.01018.24
7.3.250.0120.00916.48
7.3.240.0090.00916.64
7.3.230.0170.00016.81
7.3.210.0110.00616.43
7.3.200.0120.00919.39
7.3.190.0070.01316.79
7.3.180.0090.01316.59
7.3.170.0090.00916.53
7.3.160.0070.01416.43
7.3.120.0070.01015.13
7.2.330.0100.01416.61
7.2.320.0090.00916.50
7.2.310.0090.00916.82
7.2.300.0090.00916.76
7.2.290.0090.00916.67
7.2.60.0110.00417.08
7.2.00.0040.01119.66
7.1.200.0100.00316.08
7.1.100.0030.01018.61
7.1.70.0000.00817.39
7.1.60.0140.01019.40
7.1.50.0130.00717.28
7.1.00.0030.07722.45
7.0.200.0030.00716.67
7.0.140.0030.09022.18
7.0.60.0000.09021.84
7.0.50.0070.08017.88
7.0.40.3630.04320.11
7.0.30.2200.04320.12
7.0.20.0070.08320.30
7.0.10.3830.05020.27
7.0.00.3470.04020.30
5.6.280.0030.07321.13
5.6.210.0130.07320.46
5.6.200.0170.06718.16
5.6.190.3270.04320.55
5.6.180.3670.04020.46
5.6.170.0130.07020.47
5.6.160.3470.04720.50
5.6.150.3530.04720.38
5.6.140.3600.05020.39
5.6.130.3330.04320.37
5.6.120.1530.06320.33
5.6.110.4100.03720.28
5.6.100.3500.03720.38
5.6.90.3600.04320.33
5.6.80.3470.04019.70
5.6.70.3370.04319.67
5.6.60.4170.03319.71
5.6.50.3970.03319.70
5.6.40.3230.04019.69
5.6.30.3500.04019.57
5.6.20.3830.04019.71
5.6.10.4230.04019.65
5.6.00.3970.03019.60
5.5.350.0200.06320.43
5.5.340.0030.04317.98
5.5.330.1530.06720.27
5.5.320.3200.04320.36
5.5.310.0070.06320.28
5.5.300.3230.03720.07
5.5.290.4130.03320.01
5.5.280.0030.04020.11
5.5.270.4230.04720.16
5.5.260.3300.04320.11
5.5.250.3670.03719.95
5.5.240.3570.04019.46
5.5.230.3500.03319.70
5.5.220.3500.04019.53
5.5.210.3930.04019.53
5.5.200.3200.04019.43
5.5.190.4030.03719.43
5.5.180.4170.04019.50
5.5.160.4130.04019.44
5.5.150.3870.03719.46
5.5.140.4200.04719.42
5.5.130.3830.03719.43
5.5.120.4200.04319.46
5.5.110.3800.04319.52
5.5.100.3930.04019.36
5.5.90.3700.03319.34
5.5.80.4300.04319.57
5.5.70.3370.04319.61
5.5.60.3630.04019.33
5.5.50.3500.03719.25
5.5.40.3470.04319.43
5.5.30.3330.04019.41
5.5.20.3830.03319.43
5.5.10.3400.04319.42
5.5.00.3470.04019.40
5.4.450.3630.05019.39
5.4.440.0070.03319.38
5.4.430.4500.04019.45
5.4.420.3630.03719.34
5.4.410.3470.04019.30
5.4.400.4130.03719.00
5.4.390.3700.03719.27
5.4.380.3730.03719.00
5.4.370.4070.03019.04
5.4.360.3700.03718.98
5.4.350.3400.03719.05
5.4.340.3830.04319.28
5.4.320.4130.04319.14
5.4.310.4070.04019.04
5.4.300.4370.03319.02
5.4.290.4030.03319.05
5.4.280.3930.04019.04
5.4.270.3870.04019.05
5.4.260.3770.03719.27
5.4.250.3600.03719.14
5.4.240.3200.04018.89
5.4.230.3530.04019.09
5.4.220.3800.03319.05
5.4.210.4200.03319.13
5.4.200.4370.04019.13
5.4.190.3470.03719.13
5.4.180.3670.04018.96
5.4.170.3830.04019.12
5.4.160.3400.03718.87
5.4.150.3670.04019.10
5.4.140.3230.03716.38
5.4.130.3370.03016.48
5.4.120.3470.03716.43
5.4.110.2970.04016.50
5.4.100.3200.03716.29
5.4.90.3270.03716.46
5.4.80.3170.03316.62
5.4.70.3470.03716.57
5.4.60.3470.02716.36
5.4.50.3430.03316.38
5.4.40.3870.03016.50
5.4.30.3200.03316.26
5.4.20.4030.04316.54
5.4.10.4330.03316.35
5.4.00.4170.03715.75
5.3.290.3830.04014.68
5.3.280.3730.04014.63
5.3.270.3670.03714.61
5.3.260.4130.03714.70
5.3.250.3270.03714.61
5.3.240.3270.03714.66
5.3.230.3370.04014.62
5.3.220.3330.03314.55
5.3.210.3530.04314.52
5.3.200.3430.03314.64
5.3.190.3130.03714.56
5.3.180.3300.02714.57
5.3.170.3130.04014.59
5.3.160.3570.03714.59
5.3.150.3470.04314.59
5.3.140.3200.03714.61
5.3.130.3670.04314.51
5.3.120.3700.03714.50
5.3.110.4070.04014.57
5.3.100.3800.04714.09
5.3.90.3600.04013.87
5.3.80.3900.02714.13
5.3.70.4030.04314.07
5.3.60.4170.03713.90
5.3.50.4300.02714.06
5.3.40.3870.03714.00
5.3.30.4270.03314.12
5.3.20.4270.03713.75
5.3.10.3830.04013.70
5.3.00.4270.02713.50
5.2.170.3570.03011.11
5.2.160.3400.02711.13
5.2.150.3500.03311.17
5.2.140.3900.03311.28
5.2.130.3530.02711.00
5.2.120.3700.02311.05
5.2.110.3400.02711.11
5.2.100.3570.03011.07
5.2.90.3600.03311.13
5.2.80.2230.02310.94
5.2.70.0030.06711.10
5.2.60.0200.03710.99
5.2.50.0030.05711.00
5.2.40.2900.02010.97
5.2.30.2530.03710.79
5.2.20.2530.03010.86
5.2.10.2870.02010.84
5.2.00.2600.02710.66
5.1.60.2600.02310.02
5.1.50.2570.0279.98
5.1.40.2670.0239.91
5.1.30.2130.02710.18
5.1.20.2930.02310.20
5.1.10.2800.02310.05
5.1.00.3230.02310.00
5.0.50.1570.0208.38
5.0.40.1730.0178.38
5.0.30.1400.0308.13
5.0.20.1730.0238.24
5.0.10.1570.0138.00
5.0.00.0970.0308.14
4.4.90.0000.0405.77
4.4.80.0030.0335.89
4.4.70.1530.0205.88
4.4.60.1430.0175.89
4.4.50.1730.0135.85
4.4.40.1700.0275.81
4.4.30.1670.0175.88
4.4.20.1800.0175.82
4.4.10.1470.0175.87
4.4.00.1600.0205.77
4.3.110.1300.0175.81
4.3.100.1670.0135.79
4.3.90.1370.0135.77
4.3.80.1700.0275.70
4.3.70.1700.0175.70
4.3.60.1400.0135.70
4.3.50.1500.0175.79
4.3.40.0470.0405.76
4.3.30.0030.0274.87
4.3.20.0030.0274.87
4.3.10.0000.0374.87
4.3.00.0000.0334.87

preferences:
37.33 ms | 401 KiB | 5 Q