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"

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)
5.4.340.0050.03512.03
5.4.320.0060.04012.52
5.4.310.0110.03312.51
5.4.300.0070.03612.51
5.4.290.0070.04312.51
5.4.280.0040.03712.41
5.4.270.0040.04412.41
5.4.260.0070.04412.41
5.4.250.0030.04012.41
5.4.240.0070.03512.41
5.4.230.0080.03712.40
5.4.220.0050.03912.41
5.4.210.0070.03912.40
5.4.200.0100.03512.40
5.4.190.0060.03612.40
5.4.180.0060.03612.40
5.4.170.0080.03712.41
5.4.160.0060.03812.40
5.4.150.0070.03312.40
5.4.140.0030.04012.09
5.4.130.0030.03812.07
5.4.120.0030.03712.04
5.4.110.0070.03412.03
5.4.100.0050.03612.04
5.4.90.0040.04212.03
5.4.80.0070.03812.03
5.4.70.0100.03212.03
5.4.60.0050.04112.02
5.4.50.0060.03512.03
5.4.40.0020.03912.01
5.4.30.0050.03612.01
5.4.20.0040.04712.01
5.4.10.0070.03312.02
5.4.00.0050.03511.50
5.3.290.0060.04612.80
5.3.280.0030.03912.71
5.3.270.0040.04212.72
5.3.260.0060.04012.72
5.3.250.0060.03612.72
5.3.240.0050.03712.72
5.3.230.0070.03512.71
5.3.220.0060.03512.68
5.3.210.0080.03612.68
5.3.200.0050.03512.68
5.3.190.0060.03612.67
5.3.180.0100.04312.68
5.3.170.0050.03712.67
5.3.160.0060.03612.67
5.3.150.0020.04012.67
5.3.140.0060.03612.66
5.3.130.0050.05312.66
5.3.120.0080.03612.66
5.3.110.0030.04112.66
5.3.100.0060.03612.12
5.3.90.0050.03712.10
5.3.80.0040.03812.09
5.3.70.0060.03512.09
5.3.60.0070.03512.08
5.3.50.0060.03612.03
5.3.40.0080.03812.03
5.3.30.0090.03511.99
5.3.20.0050.03511.77
5.3.10.0070.03311.73
5.3.00.0060.03611.72
5.2.170.0040.0319.23
5.2.160.0030.0359.22
5.2.150.0020.0339.22
5.2.140.0040.0319.22
5.2.130.0030.0359.18
5.2.120.0060.0289.18
5.2.110.0070.0269.19
5.2.100.0050.0289.19
5.2.90.0060.0289.18
5.2.80.0050.0299.18
5.2.70.0050.0299.18
5.2.60.0050.0299.13
5.2.50.0030.0319.10
5.2.40.0040.0289.08
5.2.30.0020.0329.05
5.2.20.0040.0309.04
5.2.10.0080.0258.95
5.2.00.0060.0278.81
5.1.60.0070.0218.10
5.1.50.0060.0308.09
5.1.40.0050.0248.07
5.1.30.0070.0238.43
5.1.20.0040.0268.45
5.1.10.0040.0268.17
5.1.00.0050.0288.17
5.0.50.0020.0256.64
5.0.40.0060.0276.50
5.0.30.0090.0366.32
5.0.20.0030.0206.29
5.0.10.0020.0206.26
5.0.00.0040.0316.25
4.4.90.0030.0164.78
4.4.80.0040.0164.76
4.4.70.0050.0144.75
4.4.60.0020.0164.76
4.4.50.0040.0144.77
4.4.40.0030.0254.71
4.4.30.0050.0144.76
4.4.20.0040.0154.84
4.4.10.0060.0124.84
4.4.00.0020.0254.75
4.3.110.0030.0184.67
4.3.100.0050.0174.66
4.3.90.0020.0184.64
4.3.80.0040.0234.59
4.3.70.0020.0154.63
4.3.60.0030.0144.63
4.3.50.0030.0164.63
4.3.40.0040.0234.54
4.3.30.0010.0173.30
4.3.20.0030.0153.29
4.3.10.0020.0183.23
4.3.00.0030.0207.40

preferences:
143.57 ms | 1398 KiB | 7 Q