3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { $items = [1,2,3]; function getItems() { return $this->items; } } $foo = new Foo(); foreach($foo->getItems() as &$item) { echo $item, PHP_EOL; $item = '-1'; } var_dump($foo->getItems());

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)
5.6.80.0000.09020.35
5.5.240.0000.08320.23
5.4.400.0170.06318.49
5.4.390.0200.05318.72
5.4.380.0130.06018.72
5.4.370.0170.05318.46
5.4.360.0270.04718.50
5.4.350.0170.05318.81
5.4.340.0100.05718.81
5.4.320.0230.04718.68
5.4.310.0270.05018.58
5.4.300.0200.05018.68
5.4.290.0230.05018.52
5.4.280.0130.05318.50
5.4.270.0200.04718.58
5.4.260.0230.04318.45
5.4.250.0200.04718.60
5.4.240.0170.05318.62
5.4.230.0170.05718.51
5.4.220.0170.05718.45
5.4.210.0070.06318.76
5.4.200.0170.05016.62
5.4.190.0070.06018.53
5.4.180.0130.05718.75
5.4.170.0300.04018.79
5.4.160.0230.05318.75
5.4.150.0130.07018.42
5.4.140.0200.04716.27
5.4.130.0170.05016.26
5.4.120.0230.04016.22
5.4.110.0130.05016.33
5.4.100.0200.05016.29
5.4.90.0170.05016.45
5.4.80.0170.05016.45
5.4.70.0230.04716.17
5.4.60.0230.05016.40
5.4.50.0230.06716.16
5.4.40.0170.05016.29
5.4.30.0270.06316.19
5.4.20.0130.05716.30
5.4.10.0200.04716.23
5.4.00.0200.06015.73
5.3.290.0270.07014.70
5.3.280.0130.06014.57
5.3.270.0170.05314.58
5.3.260.0070.06314.65
5.3.250.0200.06314.64
5.3.240.0270.04014.64
5.3.230.0200.04714.77
5.3.220.0270.05314.68
5.3.210.0070.06314.70
5.3.200.0230.04014.73
5.3.190.0130.05314.70
5.3.180.0170.04714.72
5.3.170.0270.03714.67
5.3.160.0130.05014.54
5.3.150.0030.07014.72
5.3.140.0170.05014.54
5.3.130.0170.05314.67
5.3.120.0130.05314.75
5.3.110.0200.05014.72
5.3.100.0200.04714.21
5.3.90.0130.05314.07
5.3.80.0130.05314.04
5.3.70.0170.06714.06
5.3.60.0170.06714.03
5.3.50.0170.05014.01
5.3.40.0200.04713.92
5.3.30.0200.04314.11
5.3.20.0270.04013.67
5.3.10.0230.04013.68
5.3.00.0270.03713.86
5.2.170.0130.04311.36
5.2.160.0200.03311.24
5.2.150.0130.04311.18
5.2.140.0170.03711.26
5.2.130.0100.04311.22
5.2.120.0230.02711.14
5.2.110.0170.04011.17
5.2.100.0200.03311.13
5.2.90.0100.04311.19
5.2.80.0070.04711.21
5.2.70.0130.04011.13
5.2.60.0170.04311.07
5.2.50.0130.04011.07
5.2.40.0130.03711.00
5.2.30.0100.04310.91
5.2.20.0000.05011.08
5.2.10.0030.04711.04
5.2.00.0170.03710.89
5.1.60.0100.03310.02
5.1.50.0030.04010.20
5.1.40.0100.03310.02
5.1.30.0100.03710.31
5.1.20.0100.03710.47
5.1.10.0030.04310.14
5.1.00.0200.03010.19
5.0.50.0070.0308.61
5.0.40.0130.0208.50
5.0.30.0070.0478.22
5.0.20.0100.0238.23
5.0.10.0030.0308.19
5.0.00.0030.0478.23
4.4.90.0070.0206.58
4.4.80.0100.0176.58
4.4.70.0100.0276.58
4.4.60.0070.0206.58
4.4.50.0100.0306.58
4.4.40.0100.0406.58
4.4.30.0030.0236.58
4.4.20.0030.0236.58
4.4.10.0030.0236.58
4.4.00.0070.0336.58
4.3.110.0070.0206.58
4.3.100.0030.0236.58
4.3.90.0170.0106.58
4.3.80.0100.0306.58
4.3.70.0030.0236.58
4.3.60.0070.0206.58
4.3.50.0070.0206.58
4.3.40.0070.0336.58
4.3.30.0070.0206.58
4.3.20.0030.0236.58
4.3.10.0000.0276.58
4.3.00.0070.0236.83

preferences:
143.06 ms | 1394 KiB | 7 Q