3v4l.org

run code in 300+ PHP versions simultaneously
<?php abstract class T { static $instanses; final private function __construct(){ } public static function getInstance() { if (!isset(static::$instanses)) { $className = get_class($this) static::$instanses = new $className; } return static::$instanses; } } class A extends T { } class B extends A { } $t = A::getInstance(); var_dump($t); $t1 = B::getInstance(); var_dump($t1); ?>

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)
5.6.130.0070.06018.14
5.6.120.0070.08321.03
5.6.110.0000.04721.03
5.6.100.0070.08721.11
5.6.90.0070.04320.96
5.6.80.0130.06720.52
5.5.290.0070.08718.07
5.5.280.0030.05020.77
5.5.270.0100.04020.75
5.5.260.0030.08320.84
5.5.250.0070.06320.46
5.5.240.0030.04020.04
5.4.450.0830.04719.63
5.4.440.0930.06019.38
5.4.430.0730.05319.55
5.4.420.0630.06019.58
5.4.410.0930.06019.35
5.4.400.0900.05719.29
5.4.390.0900.05019.25
5.4.380.1030.04719.23
5.4.370.0900.04718.86
5.4.360.0770.06319.30
5.4.350.0800.05719.29
5.4.340.0970.04319.29
5.4.320.0830.05719.30
5.4.310.1000.04019.01
5.4.300.0970.04319.15
5.4.290.1270.05719.15
5.4.280.1000.05719.08
5.4.270.1000.04319.14
5.4.260.0730.05019.25
5.4.250.0630.06019.28
5.4.240.0730.04719.28
5.4.230.0730.05019.14
5.4.220.0770.05019.27
5.4.210.0770.04718.96
5.4.200.0830.06716.68
5.4.190.0730.05718.97
5.4.180.0770.05018.91
5.4.170.0770.05319.22
5.4.160.0670.05719.09
5.4.150.0800.04319.12
5.4.140.0700.05716.50
5.4.130.0970.03316.48
5.4.120.0730.05016.43
5.4.110.0800.04016.30
5.4.100.0770.06316.43
5.4.90.0670.05716.42
5.4.80.0730.04716.31
5.4.70.1070.05716.38
5.4.60.0030.07016.43
5.4.50.0070.07016.22
5.4.40.0170.04716.25
5.4.30.0200.07016.51
5.4.20.0330.06016.52

preferences:
143 ms | 1394 KiB | 7 Q