3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rose = "black"; ${"rose"} = "white"; $rose = "red"; print_r(${"rose"}); echo "\n\n"; $$ = 456; var_dump($$); ${" "} = "white"; print_r(${" "}); 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); var_dump($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)
5.4.340.0040.03612.01
5.4.320.0080.03412.50
5.4.310.0040.03912.50
5.4.300.0060.03612.50
5.4.290.0050.03812.50
5.4.280.0070.03412.39
5.4.270.0110.05212.39
5.4.260.0080.03412.39
5.4.250.0060.03612.39
5.4.240.0060.03512.39
5.4.230.0080.03512.39
5.4.220.0040.03712.39
5.4.210.0050.03612.38
5.4.200.0070.03612.38
5.4.190.0060.03512.38
5.4.180.0080.03312.38
5.4.170.0070.03412.39
5.4.160.0080.03312.38
5.4.150.0060.03412.38
5.4.140.0050.03612.07
5.4.130.0050.03912.05
5.4.120.0060.03412.02
5.4.110.0080.03212.02
5.4.100.0080.03912.02
5.4.90.0060.04112.01
5.4.80.0070.03412.01
5.4.70.0040.03512.01
5.4.60.0050.03412.01
5.4.50.0040.03612.01
5.4.40.0050.03512.00
5.4.30.0040.03711.99
5.4.20.0040.03811.99
5.4.10.0060.03412.00
5.4.00.0060.04011.48
5.3.290.0050.04012.80
5.3.280.0060.03812.71
5.3.270.0050.03912.73
5.3.260.0060.03812.72
5.3.250.0060.03612.72
5.3.240.0050.03712.72
5.3.230.0040.03912.71
5.3.220.0070.03512.68
5.3.210.0070.03812.68
5.3.200.0040.03812.68
5.3.190.0060.03812.68
5.3.180.0060.03712.67
5.3.170.0060.03712.67
5.3.160.0080.03712.67
5.3.150.0060.04012.67
5.3.140.0070.03812.66
5.3.130.0100.04312.66
5.3.120.0110.04812.66
5.3.110.0040.04112.65
5.3.100.0050.03812.12
5.3.90.0050.03812.09
5.3.80.0050.03712.08
5.3.70.0040.03812.07
5.3.60.0090.03312.07
5.3.50.0070.03512.00
5.3.40.0110.03612.00
5.3.30.0060.03511.95
5.3.20.0070.03511.73
5.3.10.0080.03411.70
5.3.00.0050.03811.69
5.2.170.0070.0369.18
5.2.160.0050.0309.18
5.2.150.0040.0319.18
5.2.140.0060.0289.18
5.2.130.0030.0309.14
5.2.120.0030.0309.14
5.2.110.0050.0329.14
5.2.100.0030.0299.14
5.2.90.0040.0299.14
5.2.80.0030.0309.14
5.2.70.0010.0339.14
5.2.60.0060.0279.09
5.2.50.0030.0309.06
5.2.40.0050.0289.04
5.2.30.0030.0309.01
5.2.20.0070.0269.01
5.2.10.0050.0268.93
5.2.00.0030.0308.79
5.1.60.0060.0228.07
5.1.50.0040.0248.07
5.1.40.0030.0258.05
5.1.30.0060.0238.40
5.1.20.0060.0248.42
5.1.10.0040.0258.14
5.1.00.0050.0298.14
5.0.50.0050.0196.62
5.0.40.0020.0216.48
5.0.30.0030.0316.29
5.0.20.0030.0196.26
5.0.10.0020.0216.24
5.0.00.0020.0316.23
4.4.90.0010.0174.78
4.4.80.0010.0164.75
4.4.70.0020.0164.75
4.4.60.0010.0174.76
4.4.50.0020.0164.77
4.4.40.0030.0254.71
4.4.30.0040.0154.76
4.4.20.0010.0174.85
4.4.10.0030.0154.85
4.4.00.0020.0254.76
4.3.110.0020.0164.67
4.3.100.0030.0154.67
4.3.90.0030.0144.63
4.3.80.0020.0254.58
4.3.70.0010.0174.63
4.3.60.0010.0174.62
4.3.50.0040.0144.63
4.3.40.0040.0214.54
4.3.30.0010.0163.29
4.3.20.0010.0183.27
4.3.10.0030.0143.22
4.3.00.0130.0207.43

preferences:
138.88 ms | 1394 KiB | 7 Q