3v4l.org

run code in 300+ PHP versions simultaneously
<?php class x { public function __construct() { $x =& $this; $this = new stdClass; var_dump($this); var_dump($x); } } var_dump(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)
5.4.320.0080.03712.51
5.4.310.0050.03612.50
5.4.300.0050.03612.51
5.4.290.0080.04112.50
5.4.280.0060.03312.40
5.4.270.0080.03512.41
5.4.260.0070.03912.41
5.4.250.0100.03412.41
5.4.240.0090.03912.41
5.4.230.0070.04312.40
5.4.220.0060.03612.40
5.4.210.0070.04012.39
5.4.200.0050.04112.39
5.4.190.0050.03612.39
5.4.180.0100.03112.39
5.4.170.0100.03012.41
5.4.160.0060.03512.40
5.4.150.0060.03512.39
5.4.140.0080.03312.08
5.4.130.0040.03612.07
5.4.120.0070.03212.02
5.4.110.0050.03512.02
5.4.100.0060.04212.02
5.4.90.0040.03712.03
5.4.80.0030.03912.02
5.4.70.0050.03412.02
5.4.60.0050.03412.02
5.4.50.0090.03412.02
5.4.40.0050.03412.00
5.4.30.0070.03912.00
5.4.20.0080.03212.00
5.4.10.0030.03712.00
5.4.00.0070.03511.50
5.3.290.0030.04212.80
5.3.280.0040.04012.71
5.3.270.0050.04012.72
5.3.260.0060.03812.72
5.3.250.0070.03612.72
5.3.240.0080.03512.72
5.3.230.0080.03612.71
5.3.220.0060.03712.68
5.3.210.0040.04012.68
5.3.200.0020.03912.68
5.3.190.0090.03812.68
5.3.180.0050.03612.67
5.3.170.0030.03812.67
5.3.160.0100.03112.68
5.3.150.0050.04412.68
5.3.140.0050.04012.66
5.3.130.0090.03812.66
5.3.120.0050.04012.66
5.3.110.0080.03712.66
5.3.100.0050.03812.12
5.3.90.0050.03612.10
5.3.80.0050.03612.09
5.3.70.0050.03612.09
5.3.60.0040.03712.08
5.3.50.0080.03412.02
5.3.40.0020.03912.03
5.3.30.0090.03711.98
5.3.20.0050.03511.76
5.3.10.0070.03211.73
5.3.00.0070.03511.71
5.2.170.0060.0299.22
5.2.160.0050.0289.22
5.2.150.0050.0299.22
5.2.140.0040.0309.22
5.2.130.0070.0329.18
5.2.120.0020.0309.18
5.2.110.0060.0279.19
5.2.100.0090.0249.17
5.2.90.0060.0319.17
5.2.80.0070.0289.17
5.2.70.0040.0309.17
5.2.60.0080.0269.12
5.2.50.0020.0319.10
5.2.40.0050.0289.07
5.2.30.0060.0279.04
5.2.20.0030.0299.04
5.2.10.0050.0278.94
5.2.00.0010.0328.79
5.1.60.0070.0208.09
5.1.50.0040.0248.09
5.1.40.0030.0268.07
5.1.30.0060.0238.42
5.1.20.0030.0268.44
5.1.10.0060.0258.16
5.1.00.0040.0278.16
5.0.50.0080.0196.64
5.0.40.0040.0186.50
5.0.30.0040.0306.32
5.0.20.0050.0176.28
5.0.10.0040.0196.25
5.0.00.0050.0296.25
4.4.90.0020.0164.78
4.4.80.0020.0164.76
4.4.70.0050.0134.75
4.4.60.0030.0144.76
4.4.50.0010.0164.77
4.4.40.0020.0294.71
4.4.30.0010.0164.76
4.4.20.0040.0224.85
4.4.10.0010.0174.85
4.4.00.0030.0244.76
4.3.110.0020.0164.67
4.3.100.0020.0164.66
4.3.90.0020.0164.64
4.3.80.0050.0234.58
4.3.70.0020.0144.63
4.3.60.0050.0194.63
4.3.50.0040.0134.63
4.3.40.0040.0304.54
4.3.30.0030.0153.30
4.3.20.0030.0153.28
4.3.10.0020.0153.23
4.3.00.0170.0278.16

preferences:
142.5 ms | 1386 KiB | 7 Q