3v4l.org

run code in 300+ PHP versions simultaneously
<?php class y { private $ppp = 123; } class x { public function __construct() { $x =& $this; $x = new y; var_dump(get_class($this)); var_dump(&$this); } } new 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)
5.4.310.0030.03812.51
5.4.300.0030.03712.51
5.4.290.0080.03412.51
5.4.280.0090.03212.41
5.4.270.0070.03412.40
5.4.260.0070.03512.41
5.4.250.0060.04212.41
5.4.240.0060.03412.41
5.4.230.0050.04412.39
5.4.220.0050.03612.39
5.4.210.0040.04212.39
5.4.200.0060.04112.39
5.4.190.0060.03512.39
5.4.180.0060.03512.39
5.4.170.0010.04012.40
5.4.160.0060.03512.40
5.4.150.0080.03312.40
5.4.140.0060.03612.08
5.4.130.0080.03212.07
5.4.120.0050.03612.02
5.4.110.0030.03712.03
5.4.100.0040.03512.02
5.4.90.0030.04212.02
5.4.80.0080.03912.02
5.4.70.0050.03412.02
5.4.60.0050.03412.02
5.4.50.0070.03612.02
5.4.40.0030.03712.01
5.4.30.0040.03712.00
5.4.20.0070.03712.00
5.4.10.0050.03512.00
5.4.00.0050.03611.50
5.3.290.0080.03712.80
5.3.280.0070.03812.71
5.3.270.0050.03912.72
5.3.260.0060.03912.72
5.3.250.0050.04312.72
5.3.240.0070.03612.72
5.3.230.0040.04412.71
5.3.220.0040.03912.68
5.3.210.0060.04612.68
5.3.200.0090.03712.68
5.3.190.0080.03612.68
5.3.180.0070.03412.67
5.3.170.0050.03612.67
5.3.160.0050.04412.68
5.3.150.0050.04412.67
5.3.140.0030.03912.66
5.3.130.0060.03812.66
5.3.120.0080.03612.66
5.3.110.0070.03912.66
5.3.100.0070.03612.12
5.3.90.0050.03612.11
5.3.80.0070.03412.09
5.3.70.0060.04112.09
5.3.60.0060.03412.07
5.3.50.0090.03812.02
5.3.40.0040.03812.02
5.3.30.0040.03811.98
5.3.20.0030.03711.75
5.3.10.0030.04311.73
5.3.00.0080.04111.71
5.2.170.0040.0319.21
5.2.160.0030.0339.21
5.2.150.0060.0289.22
5.2.140.0030.0319.22
5.2.130.0030.0299.17
5.2.120.0020.0309.17
5.2.110.0030.0299.18
5.2.100.0040.0339.18
5.2.90.0040.0299.18
5.2.80.0030.0329.18
5.2.70.0030.0329.17
5.2.60.0030.0329.13
5.2.50.0040.0319.09
5.2.40.0040.0299.07
5.2.30.0020.0339.05
5.2.20.0040.0309.04
5.2.10.0040.0308.95
5.2.00.0020.0328.80
5.1.60.0060.0228.09
5.1.50.0050.0268.08
5.1.40.0060.0318.07
5.1.30.0050.0308.42
5.1.20.0070.0278.43
5.1.10.0070.0318.16
5.1.00.0040.0298.17
5.0.50.0020.0236.64
5.0.40.0040.0196.50
5.0.30.0030.0316.31
5.0.20.0030.0206.28
5.0.10.0020.0216.26
5.0.00.0030.0316.25
4.4.90.0020.0164.78
4.4.80.0030.0154.75
4.4.70.0010.0174.75
4.4.60.0030.0154.75
4.4.50.0040.0144.77
4.4.40.0030.0254.71
4.4.30.0000.0184.76
4.4.20.0020.0164.84
4.4.10.0030.0154.85
4.4.00.0010.0264.75
4.3.110.0040.0164.67
4.3.100.0060.0124.66
4.3.90.0030.0144.63
4.3.80.0010.0264.58
4.3.70.0030.0174.63
4.3.60.0010.0164.63
4.3.50.0040.0144.63
4.3.40.0010.0254.54
4.3.30.0020.0163.30
4.3.20.0020.0163.28
4.3.10.0030.0153.24
4.3.00.0030.01715.90

preferences:
162.68 ms | 1394 KiB | 7 Q