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 $s instanceof("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)
5.4.340.0130.03812.03
5.4.320.0110.04712.52
5.4.310.0090.04112.51
5.4.300.0080.03712.52
5.4.290.0040.04112.52
5.4.280.0090.04012.41
5.4.270.0080.03512.41
5.4.260.0070.04312.41
5.4.250.0060.03712.41
5.4.240.0060.03512.41
5.4.230.0070.04312.40
5.4.220.0050.03912.40
5.4.210.0070.03412.40
5.4.200.0050.03812.40
5.4.190.0090.03212.39
5.4.180.0100.03212.40
5.4.170.0070.03412.41
5.4.160.0080.03712.40
5.4.150.0040.03912.40
5.4.140.0030.04212.09
5.4.130.0070.03412.07
5.4.120.0060.03512.04
5.4.110.0080.03512.03
5.4.100.0080.03712.04
5.4.90.0060.03612.03
5.4.80.0030.04012.04
5.4.70.0070.03612.02
5.4.60.0040.03612.02
5.4.50.0140.04512.03
5.4.40.0090.03612.02
5.4.30.0060.03812.01
5.4.20.0080.03512.00
5.4.10.0060.03612.01
5.4.00.0070.03911.50
5.3.290.0090.04912.80
5.3.280.0070.03612.71
5.3.270.0040.04412.72
5.3.260.0040.04312.72
5.3.250.0070.04112.71
5.3.240.0100.04012.72
5.3.230.0070.04012.71
5.3.220.0070.03912.68
5.3.210.0080.05312.68
5.3.200.0090.03512.68
5.3.190.0120.04012.68
5.3.180.0060.03812.68
5.3.170.0080.03712.67
5.3.160.0080.03912.67
5.3.150.0060.03712.67
5.3.140.0060.03612.66
5.3.130.0090.03712.66
5.3.120.0070.04212.66
5.3.110.0080.05212.65
5.3.100.0050.04112.12
5.3.90.0060.03612.11
5.3.80.0080.03812.09
5.3.70.0040.04212.09
5.3.60.0080.03812.08
5.3.50.0060.03912.03
5.3.40.0070.04812.03
5.3.30.0080.03511.99
5.3.20.0060.03911.77
5.3.10.0080.04111.73
5.3.00.0090.05611.72
5.2.170.0030.0399.23
5.2.160.0040.0319.23
5.2.150.0060.0299.23
5.2.140.0060.0299.22
5.2.130.0030.0309.18
5.2.120.0060.0289.18
5.2.110.0060.0289.19
5.2.100.0070.0279.18
5.2.90.0040.0309.18
5.2.80.0050.0319.18
5.2.70.0020.0339.18
5.2.60.0050.0309.13
5.2.50.0060.0309.10
5.2.40.0030.0319.07
5.2.30.0030.0329.05
5.2.20.0040.0299.04
5.2.10.0050.0288.95
5.2.00.0030.0308.82
5.1.60.0050.0238.09
5.1.50.0060.0238.09
5.1.40.0060.0228.07
5.1.30.0060.0238.43
5.1.20.0030.0278.45
5.1.10.0070.0238.17
5.1.00.0030.0268.16
5.0.50.0050.0206.65
5.0.40.0050.0176.51
5.0.30.0030.0326.32
5.0.20.0040.0186.29
5.0.10.0010.0236.26
5.0.00.0020.0336.25
4.4.90.0020.0164.78
4.4.80.0030.0154.75
4.4.70.0030.0154.76
4.4.60.0040.0144.75
4.4.50.0020.0154.77
4.4.40.0040.0234.71
4.4.30.0040.0144.76
4.4.20.0020.0164.85
4.4.10.0050.0134.85
4.4.00.0040.0234.76
4.3.110.0050.0144.67
4.3.100.0020.0154.66
4.3.90.0050.0124.63
4.3.80.0040.0234.58
4.3.70.0030.0144.63
4.3.60.0020.0154.63
4.3.50.0030.0154.63
4.3.40.0030.0244.53
4.3.30.0010.0183.30
4.3.20.0040.0163.29
4.3.10.0060.0133.24
4.3.00.0230.01012.08

preferences:
140.33 ms | 1398 KiB | 7 Q