3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo { use Bar as Baz; } namespace Foo { use Baz as Bar; class Bar { public $y = 2; } } namespace Foo { use Bar as Baz; class Baz { public $x = 1; } } namespace { $x = new Foo\Bar(); $y = new Foo\Baz(); echo $x->y; echo $y->x; }

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)
7.2.90.1540.00714.82
7.2.80.1060.00914.49
7.2.70.0410.01214.90
7.2.60.0810.01014.93
7.2.50.0130.00614.94
7.2.40.0130.00714.69
7.2.30.0110.01114.67
7.2.20.1500.01215.04
7.2.10.0000.01514.85
7.2.00.0450.00314.98
7.1.210.0100.01013.69
7.1.200.1240.00313.64
7.1.190.0120.01213.86
7.1.180.0150.00613.46
7.1.170.0480.00913.47
7.1.160.0210.00413.58
7.1.150.0040.01313.66
7.1.140.0660.00713.71
7.1.130.1480.01013.83
7.1.120.0800.00013.35
7.1.110.0140.00513.68
7.1.100.0080.01413.88
7.1.90.1330.00613.70
7.1.80.0030.00913.55
7.1.70.1220.00313.73
7.1.60.0300.00431.77
7.1.50.0850.01032.02
7.1.40.0290.00632.07
7.1.30.0880.01731.57
7.1.20.0220.01831.97
7.1.10.0200.00013.38
7.1.00.0110.00413.65
7.0.310.1260.01313.37
7.0.300.0640.00713.17
7.0.290.0430.01113.56
7.0.280.1780.01013.38
7.0.270.1140.00413.29
7.0.260.0080.00813.43
7.0.250.0030.01413.52
7.0.240.0620.00013.41
7.0.230.0670.00313.23
7.0.220.0600.01013.14
7.0.210.0110.00313.48
7.0.200.0060.01013.25
7.0.190.0970.00313.34
7.0.180.0050.01413.54
7.0.170.0110.00413.63
7.0.160.0190.00013.36
7.0.150.0810.00613.57
7.0.140.0340.00413.29
7.0.130.0110.00413.42
7.0.120.0120.00413.02
7.0.110.0000.01413.45
7.0.100.0100.00313.23
7.0.90.0420.00313.37
7.0.80.0080.00613.63
7.0.70.0530.00013.48
7.0.60.2040.00713.62
7.0.50.0260.00413.57
7.0.40.2000.00713.57
7.0.30.1760.00013.54
7.0.20.0060.00913.78
7.0.10.0140.00013.72
7.0.00.0300.00313.36

preferences:
141.03 ms | 1394 KiB | 7 Q