3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { function __construct() { $this->a = "hello"; $this->b = "hi"; $this->val = "howdy"; $val = "a"; echo $this->$val; // outputs "hello" echo "\n"; $val = "b"; echo $this->{$val}; // outputs "hi" echo "\n"; echo $this->val; //outputs "howdy" echo "\n"; echo $this->"val"; } } $foo = new foo();

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)
5.4.320.0060.03712.52
5.4.310.0100.03412.52
5.4.300.0050.03812.52
5.4.290.0070.03812.51
5.4.280.0060.03612.41
5.4.270.0060.03712.41
5.4.260.0050.03812.41
5.4.250.0030.04012.41
5.4.240.0110.04312.41
5.4.230.0050.04012.40
5.4.220.0060.03712.40
5.4.210.0090.03512.40
5.4.200.0070.04712.40
5.4.190.0020.04512.40
5.4.180.0040.04112.40
5.4.170.0080.03512.40
5.4.160.0090.03312.40
5.4.150.0040.03912.40
5.4.140.0060.03712.09
5.4.130.0020.03912.07
5.4.120.0030.03912.04
5.4.110.0050.03612.03
5.4.100.0050.04012.03
5.4.90.0090.03812.03
5.4.80.0050.04012.03
5.4.70.0090.03212.02
5.4.60.0060.03612.03
5.4.50.0060.03512.03
5.4.40.0050.03512.02
5.4.30.0050.03612.01
5.4.20.0070.03312.01
5.4.10.0070.03312.02
5.4.00.0040.03811.50
5.3.290.0040.04212.80
5.3.280.0050.03912.71
5.3.270.0040.04012.73
5.3.260.0040.04112.72
5.3.250.0070.03512.72
5.3.240.0040.03812.72
5.3.230.0060.03812.71
5.3.220.0090.03712.68
5.3.210.0060.03812.68
5.3.200.0040.03712.68
5.3.190.0050.03812.68
5.3.180.0050.03712.67
5.3.170.0040.03712.67
5.3.160.0060.03612.68
5.3.150.0070.03612.67
5.3.140.0100.04612.66
5.3.130.0030.04712.66
5.3.120.0080.04012.66
5.3.110.0150.03912.66
5.3.100.0080.03512.12
5.3.90.0070.03612.11
5.3.80.0060.03712.10
5.3.70.0090.03512.09
5.3.60.0070.03912.08
5.3.50.0060.04012.03
5.3.40.0050.03812.03
5.3.30.0050.03911.99
5.3.20.0050.04111.77
5.3.10.0090.03111.73
5.3.00.0070.03411.72
5.2.170.0050.0299.22
5.2.160.0070.0269.23
5.2.150.0020.0339.22
5.2.140.0060.0299.22
5.2.130.0050.0289.18
5.2.120.0050.0289.18
5.2.110.0040.0309.19
5.2.100.0060.0289.19
5.2.90.0050.0299.18
5.2.80.0060.0289.18
5.2.70.0050.0309.18
5.2.60.0050.0309.13
5.2.50.0030.0329.10
5.2.40.0050.0289.07
5.2.30.0100.0249.05
5.2.20.0050.0289.04
5.2.10.0030.0298.95
5.2.00.0050.0308.81
5.1.60.0050.0238.09
5.1.50.0010.0288.09
5.1.40.0050.0238.07
5.1.30.0020.0288.42
5.1.20.0030.0278.45
5.1.10.0060.0248.17
5.1.00.0060.0278.17
5.0.50.0070.0176.65
5.0.40.0040.0196.50
5.0.30.0040.0306.32
5.0.20.0040.0196.29
5.0.10.0040.0206.26
5.0.00.0030.0316.25
4.4.90.0020.0164.78
4.4.80.0050.0134.75
4.4.70.0000.0184.75
4.4.60.0010.0174.75
4.4.50.0030.0174.77
4.4.40.0010.0264.71
4.4.30.0020.0164.76
4.4.20.0030.0224.85
4.4.10.0040.0204.85
4.4.00.0020.0294.76
4.3.110.0010.0174.67
4.3.100.0030.0144.66
4.3.90.0020.0154.63
4.3.80.0020.0254.58
4.3.70.0040.0134.63
4.3.60.0020.0154.63
4.3.50.0040.0144.63
4.3.40.0010.0254.54
4.3.30.0040.0143.30
4.3.20.0030.0173.29
4.3.10.0030.0153.24
4.3.00.0100.0307.13

preferences:
141.78 ms | 1394 KiB | 7 Q