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);

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)
5.4.340.0050.03612.03
5.4.320.0080.03512.52
5.4.310.0120.03512.51
5.4.300.0070.03612.52
5.4.290.0050.03912.51
5.4.280.0100.03212.41
5.4.270.0080.03412.41
5.4.260.0040.03912.41
5.4.250.0060.03712.41
5.4.240.0050.04212.41
5.4.230.0070.03812.40
5.4.220.0090.03312.40
5.4.210.0030.03812.40
5.4.200.0080.03712.40
5.4.190.0070.03612.39
5.4.180.0050.03812.39
5.4.170.0090.03412.40
5.4.160.0040.03812.40
5.4.150.0070.03612.40
5.4.140.0050.03912.09
5.4.130.0060.03512.07
5.4.120.0070.03412.03
5.4.110.0080.03512.03
5.4.100.0070.03412.03
5.4.90.0080.04312.03
5.4.80.0080.03612.03
5.4.70.0070.03512.03
5.4.60.0080.03712.03
5.4.50.0080.04012.02
5.4.40.0060.04212.01
5.4.30.0070.03612.01
5.4.20.0070.03412.00
5.4.10.0070.04212.01
5.4.00.0080.03511.50
5.3.290.0090.03612.80
5.3.280.0070.03512.71
5.3.270.0070.03712.72
5.3.260.0090.03612.72
5.3.250.0070.03812.72
5.3.240.0100.03612.71
5.3.230.0060.04212.70
5.3.220.0080.03712.68
5.3.210.0110.04012.68
5.3.200.0070.03612.68
5.3.190.0090.04012.68
5.3.180.0150.06212.68
5.3.170.0110.03812.67
5.3.160.0060.03912.67
5.3.150.0080.03912.68
5.3.140.0080.03612.66
5.3.130.0040.04312.66
5.3.120.0100.03612.66
5.3.110.0070.04112.66
5.3.100.0070.03612.13
5.3.90.0070.03512.12
5.3.80.0050.03812.10
5.3.70.0050.03712.09
5.3.60.0050.03912.08
5.3.50.0100.03312.03
5.3.40.0070.03612.03
5.3.30.0060.03611.99
5.3.20.0060.03611.77
5.3.10.0070.03411.73
5.3.00.0070.04211.72
5.2.170.0030.0359.22
5.2.160.0060.0279.23
5.2.150.0060.0339.22
5.2.140.0030.0329.23
5.2.130.0050.0299.18
5.2.120.0040.0299.18
5.2.110.0050.0299.19
5.2.100.0040.0299.18
5.2.90.0060.0289.19
5.2.80.0070.0309.18
5.2.70.0030.0339.18
5.2.60.0060.0339.13
5.2.50.0040.0319.10
5.2.40.0060.0309.07
5.2.30.0030.0349.05
5.2.20.0040.0329.04
5.2.10.0050.0288.95
5.2.00.0030.0318.82
5.1.60.0040.0248.10
5.1.50.0070.0238.09
5.1.40.0080.0218.08
5.1.30.0040.0278.42
5.1.20.0030.0288.44
5.1.10.0050.0258.17
5.1.00.0060.0248.17
5.0.50.0030.0216.65
5.0.40.0080.0226.50
5.0.30.0030.0336.32
5.0.20.0070.0166.29
5.0.10.0040.0196.26
5.0.00.0030.0316.25
4.4.90.0030.0154.78
4.4.80.0020.0154.76
4.4.70.0030.0164.75
4.4.60.0030.0164.75
4.4.50.0030.0154.77
4.4.40.0040.0254.71
4.4.30.0030.0154.76
4.4.20.0020.0164.84
4.4.10.0020.0194.85
4.4.00.0030.0264.76
4.3.110.0010.0184.67
4.3.100.0010.0164.67
4.3.90.0010.0164.64
4.3.80.0010.0284.58
4.3.70.0020.0164.63
4.3.60.0050.0124.63
4.3.50.0040.0154.63
4.3.40.0030.0234.54
4.3.30.0010.0173.30
4.3.20.0030.0163.28
4.3.10.0010.0173.23
4.3.00.0130.0337.40

preferences:
140.56 ms | 1394 KiB | 7 Q