3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = 'String_With_Underscores'; $start = microtime(true); for ($i = 0; $i < 10000; $i++) { $result = implode('', array_map('ucfirst', explode('_', strtolower($test)))); } echo 'Time taken: ' . (microtime(true) - $start) . 's';

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)
7.2.00.0030.01619.52
7.1.70.0070.01017.21
7.1.60.0040.03219.82
7.1.50.0070.03016.96
7.1.00.0070.08322.45
7.0.200.0040.01116.69
7.0.140.0100.07721.95
7.0.100.0130.04319.88
7.0.90.0070.08320.00
7.0.80.0070.08020.15
7.0.70.0070.05020.01
7.0.60.0030.04720.06
7.0.50.0100.04320.30
7.0.40.0030.04320.08
7.0.30.0100.04020.18
7.0.20.0070.04320.12
7.0.10.0000.07320.09
7.0.00.0030.04720.03
5.6.280.0170.08720.91
5.6.250.0070.10320.59
5.6.240.0070.06320.59
5.6.230.0100.09320.50
5.6.220.0100.05320.61
5.6.210.0000.06320.74
5.6.200.0100.05320.96
5.6.190.0100.05321.06
5.6.180.0030.04721.08
5.6.170.0030.05721.11
5.6.160.0070.05321.03
5.6.150.0100.05321.09
5.6.140.0070.05721.03
5.6.130.0000.06320.99
5.6.120.0030.06721.04
5.6.110.0030.06021.05
5.6.100.0030.06021.05
5.6.90.0070.05320.91
5.6.80.0100.05720.46
5.6.70.0000.05720.32
5.6.60.0100.10020.39
5.6.50.0100.10320.46
5.6.40.0230.07020.39
5.6.30.0030.07720.49
5.6.20.0100.08320.37
5.6.10.0100.09320.31
5.6.00.0030.10720.37
5.5.380.0030.09720.42
5.5.370.0030.08320.41
5.5.360.0070.10320.37
5.5.350.0130.05320.41
5.5.340.0030.06720.80
5.5.330.0000.05020.88
5.5.320.0100.08720.73
5.5.310.0000.05320.89
5.5.300.0030.05720.86
5.5.290.0000.06320.91
5.5.280.0100.05320.91
5.5.270.0000.06320.79
5.5.260.0030.05720.82
5.5.250.0030.05720.61
5.5.240.0070.05320.30
5.5.230.0070.07320.17
5.5.220.0000.05720.20
5.5.210.0030.10720.26
5.5.200.0100.10320.09
5.5.190.0100.08720.21
5.5.180.0070.10720.27
5.5.160.0100.05720.27
5.5.150.0030.11320.23
5.5.140.0030.06020.23
5.5.130.0070.10320.13
5.5.120.0070.10320.12
5.5.110.0070.10020.21
5.5.100.0130.06320.17
5.5.90.0070.08320.17
5.5.80.0030.07320.02
5.5.70.0100.10320.08
5.5.60.0130.10019.93
5.5.50.0170.06720.13
5.5.40.0030.10319.99
5.5.30.0030.10020.10
5.5.20.0070.06720.05
5.5.10.0070.07020.03
5.5.00.0100.10020.11
5.4.450.0030.06019.47
5.4.440.0070.09019.45
5.4.430.0100.05719.34
5.4.420.0000.05719.22
5.4.410.0070.05019.10
5.4.400.0070.05019.23
5.4.390.0030.05719.13
5.4.380.0030.10719.10
5.4.370.0000.06018.79
5.4.360.0030.10019.12
5.4.350.0030.10718.79
5.4.340.0030.10319.07
5.4.320.0030.10018.90
5.4.310.0100.09319.04
5.4.300.0170.09319.09
5.4.290.0070.10019.23
5.4.280.0030.10319.14
5.4.270.0100.09019.08
5.4.260.0100.10018.94
5.4.250.0070.08718.80
5.4.240.0070.10019.02
5.4.230.0070.06319.05
5.4.220.0030.10318.80
5.4.210.0170.05718.77
5.4.200.0130.07719.11
5.4.190.0130.09719.01
5.4.180.0030.05718.80
5.4.170.0130.09319.06
5.4.160.0130.05318.80
5.4.150.0000.11019.05
5.4.140.0130.09016.41
5.4.130.0070.09716.06
5.4.120.0030.08716.27
5.4.110.0100.10316.42
5.4.100.0070.09716.23
5.4.90.0030.11016.21
5.4.80.0100.09316.29
5.4.70.0030.09716.30
5.4.60.0070.08716.21
5.4.50.0100.10316.31
5.4.40.0230.08016.46
5.4.30.0130.08316.18
5.4.20.0070.08316.41
5.4.10.0000.05716.30
5.4.00.0170.06315.79
5.3.290.0070.10014.67
5.3.280.0030.06714.46
5.3.270.0100.10714.61
5.3.260.0030.06314.61
5.3.250.0030.09314.59
5.3.240.0070.09014.54
5.3.230.0100.09014.55
5.3.220.0070.10014.42
5.3.210.0130.09314.54
5.3.200.0070.08014.42
5.3.190.0070.10014.52
5.3.180.0030.10714.54
5.3.170.0130.10014.50
5.3.160.0000.08714.56
5.3.150.0130.08314.50
5.3.140.0130.09714.54
5.3.130.0030.06014.38
5.3.120.0030.10014.43
5.3.110.0000.08714.53
5.3.100.0000.07014.00
5.3.90.0100.07013.87
5.3.80.0100.09013.87
5.3.70.0070.06013.92
5.3.60.0170.08713.96
5.3.50.0030.06313.70
5.3.40.0000.11313.90
5.3.30.0170.08313.89
5.3.20.0000.07313.63
5.3.10.0030.09313.63
5.3.00.0030.07013.61
5.2.170.0070.07013.46
5.2.160.0030.06713.46
5.2.150.0100.05013.46
5.2.140.0070.08013.46
5.2.130.0100.08013.46
5.2.120.0000.06013.46
5.2.110.0000.08713.46
5.2.100.0000.05313.46
5.2.90.0030.07713.46
5.2.80.0130.06013.46
5.2.70.0000.06713.46
5.2.60.0000.06313.46
5.2.50.0030.09013.46
5.2.40.0000.09313.46
5.2.30.0100.08313.46
5.2.20.0070.08313.46
5.2.10.0070.04713.46
5.2.00.0100.07013.46
5.1.60.0070.06313.46
5.1.50.0070.07713.46
5.1.40.0070.05713.46
5.1.30.0030.08013.46
5.1.20.0000.06313.46
5.1.10.0130.06313.46
5.1.00.0030.08013.46
5.0.50.0030.05013.46
5.0.40.0070.04713.46
5.0.30.0000.09313.46
5.0.20.0030.07013.46
5.0.10.0000.05313.46
5.0.00.0000.09313.46
4.4.90.0030.06713.46
4.4.80.0030.06313.46
4.4.70.0130.06013.46
4.4.60.0070.06313.46
4.4.50.0030.04013.46
4.4.40.0000.08313.46
4.4.30.0000.07013.46
4.4.20.0000.03713.46
4.4.10.0030.05013.46
4.4.00.0000.08313.46
4.3.110.0070.06313.46
4.3.100.0030.03713.46
4.3.90.0070.06013.46
4.3.80.0070.07713.46
4.3.70.0030.06713.46
4.3.60.0030.05313.46
4.3.50.0030.03013.46
4.3.40.0030.07313.46
4.3.30.0070.06713.46
4.3.20.0030.06713.46
4.3.10.0000.06713.46
4.3.00.0000.06713.46

preferences:
37.02 ms | 401 KiB | 5 Q