3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rose = "black"; ${"rose"} = "white"; $rose = "red"; print_r(${"rose"}); echo "\n\n"; ${" "} = "white"; print_r(${" "}); echo "\n\n"; $arr{" "} = 99; var_dump($arr); $o = (object) $arr; var_dump($o); echo $o->{" "},"\n\n"; class x extends stdClass { public $val; function Show($n){ $this->val = $n; return $this->val; } } $s = new x(); echo $s->Show(100),"\n"; var_dump($s); echo instanceof($s) == "stdClass";

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)
5.4.340.0070.03412.03
5.4.320.0050.03712.52
5.4.310.0080.03612.52
5.4.300.0070.03512.52
5.4.290.0050.03912.51
5.4.280.0070.03412.41
5.4.270.0080.03912.41
5.4.260.0060.03812.41
5.4.250.0040.03912.41
5.4.240.0100.03412.41
5.4.230.0060.04012.40
5.4.220.0060.03612.40
5.4.210.0080.03212.40
5.4.200.0080.03712.40
5.4.190.0060.03612.39
5.4.180.0080.03912.39
5.4.170.0060.04312.40
5.4.160.0040.03812.40
5.4.150.0050.03712.40
5.4.140.0050.04012.09
5.4.130.0060.03812.07
5.4.120.0090.04112.03
5.4.110.0070.03812.04
5.4.100.0100.04412.04
5.4.90.0060.04412.03
5.4.80.0080.04912.03
5.4.70.0080.03612.03
5.4.60.0040.03812.02
5.4.50.0060.03512.02
5.4.40.0030.03712.02
5.4.30.0040.03712.01
5.4.20.0080.04012.00
5.4.10.0050.03812.02
5.4.00.0060.03711.50
5.3.290.0040.04112.80
5.3.280.0080.03612.70
5.3.270.0090.03512.73
5.3.260.0060.03912.72
5.3.250.0070.03712.72
5.3.240.0060.03812.72
5.3.230.0070.03612.71
5.3.220.0060.03812.68
5.3.210.0070.03812.68
5.3.200.0030.03912.68
5.3.190.0050.03912.68
5.3.180.0140.05612.68
5.3.170.0110.04812.67
5.3.160.0050.03812.67
5.3.150.0100.04112.67
5.3.140.0100.04612.66
5.3.130.0060.04212.66
5.3.120.0060.04712.66
5.3.110.0080.03712.66
5.3.100.0050.03812.13
5.3.90.0070.04312.10
5.3.80.0070.03412.10
5.3.70.0080.03412.10
5.3.60.0070.03512.08
5.3.50.0060.03612.03
5.3.40.0060.03612.03
5.3.30.0060.03511.99
5.3.20.0090.03211.77
5.3.10.0100.03011.73
5.3.00.0060.03611.72
5.2.170.0040.0319.22
5.2.160.0090.0259.22
5.2.150.0080.0339.22
5.2.140.0050.0309.22
5.2.130.0070.0319.18
5.2.120.0050.0279.18
5.2.110.0060.0289.19
5.2.100.0040.0359.19
5.2.90.0070.0359.19
5.2.80.0020.0339.18
5.2.70.0080.0269.18
5.2.60.0050.0299.13
5.2.50.0030.0319.10
5.2.40.0040.0289.07
5.2.30.0070.0329.06
5.2.20.0040.0289.04
5.2.10.0050.0278.95
5.2.00.0070.0268.82
5.1.60.0050.0228.09
5.1.50.0070.0218.09
5.1.40.0050.0248.07
5.1.30.0040.0268.43
5.1.20.0030.0278.45
5.1.10.0020.0298.17
5.1.00.0060.0238.17
5.0.50.0030.0216.65
5.0.40.0040.0196.51
5.0.30.0050.0306.32
5.0.20.0050.0206.29
5.0.10.0030.0206.26
5.0.00.0040.0306.25
4.4.90.0020.0164.78
4.4.80.0030.0144.75
4.4.70.0040.0134.75
4.4.60.0020.0164.76
4.4.50.0040.0144.77
4.4.40.0020.0254.70
4.4.30.0030.0164.76
4.4.20.0030.0164.84
4.4.10.0020.0164.85
4.4.00.0040.0234.76
4.3.110.0010.0174.67
4.3.100.0030.0184.66
4.3.90.0030.0194.64
4.3.80.0050.0304.58
4.3.70.0050.0184.63
4.3.60.0040.0144.63
4.3.50.0020.0164.63
4.3.40.0040.0234.54
4.3.30.0050.0133.30
4.3.20.0020.0153.28
4.3.10.0030.0163.24
4.3.00.0100.0237.40

preferences:
141.56 ms | 1394 KiB | 7 Q