3v4l.org

run code in 300+ PHP versions simultaneously
<?php function generateRandomString($length = 10) { $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; $randomString = ''; for ($i = 0; $i < $length; $i++) { $randomString .= $characters[rand(0, strlen($characters) - 1)]; } return $randomString; } for($i = 0; $i < 2000; $i++): echo strtoupper(generateRandomString(8)) . PHP_EOL; endfor;

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)
7.1.70.0030.00917.25
7.1.60.0170.01719.70
7.1.50.0100.01416.90
7.1.00.0130.07722.44
7.0.200.0000.01416.51
7.0.140.0070.07722.21
7.0.60.0030.09019.79
7.0.50.0170.07317.88
7.0.40.0170.08320.09
7.0.30.0700.05720.18
7.0.20.0130.04720.22
7.0.10.0300.08020.15
7.0.00.0100.07720.09
5.6.210.0030.05020.61
5.6.200.0200.08018.16
5.6.190.0070.04720.52
5.6.180.0430.06720.61
5.6.170.0330.08320.57
5.6.160.0070.09320.50
5.6.150.0030.05018.24
5.6.140.0100.06318.21
5.6.130.0100.08318.18
5.6.120.0100.04321.10
5.6.110.0100.04321.06
5.6.100.0100.04321.01
5.6.90.0100.10321.11
5.6.80.0030.09320.51
5.6.70.4270.05020.39
5.5.350.0300.07020.52
5.5.340.0130.08717.99
5.5.330.0070.10020.21
5.5.320.0230.05720.36
5.5.310.0400.06720.38
5.5.300.0030.04717.98
5.5.290.0100.08317.97
5.5.280.0270.07020.98
5.5.270.0170.06720.87
5.5.260.0200.08720.86
5.5.250.0000.05020.64
5.5.240.0130.07020.35
5.4.450.0200.04319.52
5.4.440.3470.05019.47
5.4.430.0200.07319.41
5.4.420.0330.03719.40
5.4.410.0300.07319.41
5.4.400.0400.07018.95
5.4.390.1970.04019.21
5.4.380.0230.04718.84
5.4.370.0230.04019.23
5.4.360.0570.06719.13
5.4.350.0270.04718.88
5.4.340.0130.06019.09
5.4.320.0430.06019.22
5.4.310.0600.04018.95
5.4.300.0370.07019.23
5.4.290.0430.07718.97
5.4.280.0530.06718.95
5.4.270.0500.07018.94
5.4.260.0400.07319.13
5.4.250.0400.07318.84
5.4.240.0270.05319.08
5.4.230.0330.04019.23
5.4.220.0270.04719.07
5.4.210.0270.08718.95
5.4.200.0270.07319.12
5.4.190.0270.03719.13
5.4.180.0430.06719.08
5.4.170.0330.06718.97
5.4.160.0300.05319.20
5.4.150.4300.05018.85
5.4.140.5400.03716.33
5.4.130.0270.07316.33
5.4.120.0370.07716.32
5.4.110.0200.05316.51
5.4.100.0130.05016.45
5.4.90.0230.06716.55
5.4.80.0100.08016.52
5.4.70.0170.06716.49
5.4.60.0030.04716.54
5.4.50.0170.07316.56
5.4.40.0130.07016.38
5.4.30.0400.05716.42
5.4.20.0270.04716.16
5.4.10.3600.04016.52
5.4.00.3570.03315.95
5.3.290.4230.04315.82
5.3.280.3870.04315.84
5.3.270.3470.04015.84
5.3.260.3870.04314.57
5.3.250.2570.05314.61
5.3.240.0400.07314.52
5.3.230.0370.07014.71
5.3.220.3630.04014.73
5.3.210.0170.05714.79
5.3.200.0300.05314.54
5.3.190.0170.05014.57
5.3.180.0170.04714.46
5.3.170.0100.05314.59
5.3.160.0500.07014.66
5.3.150.0370.04014.45
5.3.140.0500.05014.46
5.3.130.0470.07314.58
5.3.120.0430.09014.46
5.3.110.0400.05014.45
5.3.100.3770.04314.01
5.3.90.0530.07313.92
5.3.80.0370.05013.92
5.3.70.0200.05314.18

preferences:
44.1 ms | 400 KiB | 5 Q