3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rose = "black"; ${"rose"} = "white"; $rose = "red"; print_r(${"rose"}); echo "\n\n"; $123 = 456; var_dump($123); ${" "} = "white"; print_r(${" "}); 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)
5.4.340.0060.03412.01
5.4.320.0090.03412.50
5.4.310.0060.03912.50
5.4.300.0050.03712.50
5.4.290.0060.03712.50
5.4.280.0070.03312.39
5.4.270.0060.03612.39
5.4.260.0030.05112.39
5.4.250.0060.03712.39
5.4.240.0050.04212.39
5.4.230.0060.03812.38
5.4.220.0060.03512.38
5.4.210.0030.03812.38
5.4.200.0040.03912.38
5.4.190.0040.04012.38
5.4.180.0090.04212.38
5.4.170.0070.04012.39
5.4.160.0040.03712.38
5.4.150.0080.03612.38
5.4.140.0100.03512.07
5.4.130.0050.04112.05
5.4.120.0040.03812.02
5.4.110.0050.03612.02
5.4.100.0100.03612.02
5.4.90.0070.04212.01
5.4.80.0070.03612.01
5.4.70.0120.02912.01
5.4.60.0080.03312.01
5.4.50.0050.03612.00
5.4.40.0070.03312.00
5.4.30.0110.04111.99
5.4.20.0060.03711.98
5.4.10.0030.03711.99
5.4.00.0060.03611.48
5.3.290.0030.04312.80
5.3.280.0040.04012.71
5.3.270.0060.05312.72
5.3.260.0040.04112.72
5.3.250.0070.04012.72
5.3.240.0100.04712.72
5.3.230.0060.04312.71
5.3.220.0050.03912.68
5.3.210.0050.04012.68
5.3.200.0050.03712.68
5.3.190.0040.03912.68
5.3.180.0060.03612.67
5.3.170.0050.04012.66
5.3.160.0050.03712.67
5.3.150.0070.03512.67
5.3.140.0050.03712.66
5.3.130.0060.03912.66
5.3.120.0070.03812.66
5.3.110.0090.03512.65
5.3.100.0050.03712.12
5.3.90.0020.04112.08
5.3.80.0080.03412.07
5.3.70.0050.03712.08
5.3.60.0030.04012.07
5.3.50.0080.03312.00
5.3.40.0060.03912.00
5.3.30.0060.03511.95
5.3.20.0070.03411.72
5.3.10.0050.03511.70
5.3.00.0020.03911.68
5.2.170.0020.0339.18
5.2.160.0040.0289.18
5.2.150.0030.0319.18
5.2.140.0030.0319.18
5.2.130.0040.0299.14
5.2.120.0050.0279.14
5.2.110.0050.0289.14
5.2.100.0030.0309.14
5.2.90.0030.0309.14
5.2.80.0060.0299.14
5.2.70.0030.0369.14
5.2.60.0040.0349.09
5.2.50.0050.0309.05
5.2.40.0040.0309.04
5.2.30.0040.0309.01
5.2.20.0060.0279.01
5.2.10.0020.0318.92
5.2.00.0030.0318.79
5.1.60.0050.0238.07
5.1.50.0080.0248.07
5.1.40.0040.0248.05
5.1.30.0040.0258.39
5.1.20.0020.0288.41
5.1.10.0070.0228.14
5.1.00.0040.0258.14
5.0.50.0040.0196.62
5.0.40.0030.0196.48
5.0.30.0030.0326.29
5.0.20.0040.0196.26
5.0.10.0040.0196.24
5.0.00.0020.0326.23
4.4.90.0020.0164.78
4.4.80.0040.0154.75
4.4.70.0020.0164.76
4.4.60.0030.0154.75
4.4.50.0030.0154.77
4.4.40.0020.0264.71
4.4.30.0040.0144.76
4.4.20.0020.0164.84
4.4.10.0020.0164.85
4.4.00.0020.0264.76
4.3.110.0020.0164.67
4.3.100.0010.0174.66
4.3.90.0010.0164.64
4.3.80.0030.0254.59
4.3.70.0060.0124.63
4.3.60.0010.0164.62
4.3.50.0010.0174.63
4.3.40.0010.0254.53
4.3.30.0010.0193.29
4.3.20.0000.0173.27
4.3.10.0010.0163.22
4.3.00.0070.0237.43

preferences:
139.93 ms | 1394 KiB | 7 Q