3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo\Space { class Foo { const SOME_CONSTANT = 'Works!'; } } namespace Other\Space { $class = \Foo\Space\Foo::class; $constant = 'SOME_CONSTANT'; // Valid var_dump(constant("{$class}::{$constant}")); // Invalid var_dump(($class)::{$constant}); }

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)
5.6.130.0000.06718.13
5.6.120.0130.07721.02
5.6.110.0100.08020.93
5.6.100.0130.08021.11
5.6.90.0130.07720.88
5.6.80.0070.07720.50
5.5.290.0070.07718.03
5.5.280.0200.07020.86
5.5.270.0000.05020.87
5.5.260.0070.08720.87
5.5.250.0170.05320.61
5.5.240.0170.06720.35
5.4.450.0770.05519.51
5.4.440.0580.06219.61
5.4.430.0720.05219.59
5.4.420.0820.05319.38
5.4.410.0680.06319.33
5.4.400.0750.05519.07
5.4.390.0700.07019.11
5.4.380.0420.05019.23
5.4.370.0380.05319.18
5.4.360.0520.06019.02
5.4.350.0730.05519.17
5.4.340.0580.06219.16
5.4.320.0720.05019.07
5.4.310.0700.05219.08
5.4.300.0700.06219.29
5.4.290.0730.04819.22
5.4.280.0700.05319.08
5.4.270.0600.05019.20
5.4.260.0820.06019.26
5.4.250.0770.05519.13
5.4.240.0600.05519.08
5.4.230.0620.05219.00
5.4.220.0620.05819.28
5.4.210.0600.05719.02
5.4.200.0580.04816.83
5.4.190.0400.06318.91
5.4.180.0570.04818.99
5.4.170.0730.06219.09
5.4.160.0670.06019.02
5.4.150.0780.06019.13
5.4.140.0630.05516.51
5.4.130.0670.04516.37
5.4.120.0580.05316.45
5.4.110.0670.05316.46
5.4.100.0500.05316.36
5.4.90.0770.04516.49
5.4.80.0520.06216.57
5.4.70.0500.05216.35
5.4.60.0280.06216.45
5.4.50.0300.06516.33
5.4.40.0700.05816.42
5.4.30.0770.05216.45
5.4.20.0530.05016.31
5.4.10.0380.05216.41
5.4.00.0300.05215.86

preferences:
144.59 ms | 939 KiB | 8 Q