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 { $this->val = $val; function Show(){ echo $this->val; } } $s = new x(100); echo $s->val,"\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)
5.4.340.0050.03612.02
5.4.320.0050.03812.51
5.4.310.0070.03912.50
5.4.300.0070.03912.52
5.4.290.0080.03612.51
5.4.280.0100.03812.41
5.4.270.0060.04312.41
5.4.260.0100.03712.40
5.4.250.0060.04512.41
5.4.240.0140.03512.40
5.4.230.0080.03512.39
5.4.220.0090.04312.40
5.4.210.0050.03612.40
5.4.200.0080.04112.39
5.4.190.0100.04012.39
5.4.180.0080.03312.39
5.4.170.0070.03512.40
5.4.160.0020.03912.39
5.4.150.0090.03212.39
5.4.140.0050.03712.09
5.4.130.0060.03412.06
5.4.120.0070.04012.03
5.4.110.0090.03412.03
5.4.100.0040.03812.02
5.4.90.0070.03512.02
5.4.80.0050.03812.03
5.4.70.0020.03712.03
5.4.60.0170.03412.02
5.4.50.0110.03812.02
5.4.40.0060.03612.01
5.4.30.0040.03812.00
5.4.20.0070.03412.00
5.4.10.0090.03812.01
5.4.00.0070.03511.50
5.3.290.0120.05112.80
5.3.280.0110.04012.70
5.3.270.0030.04612.72
5.3.260.0130.04912.72
5.3.250.0070.03512.72
5.3.240.0050.04512.72
5.3.230.0050.03912.71
5.3.220.0050.03812.68
5.3.210.0100.03512.68
5.3.200.0060.03612.68
5.3.190.0050.04112.68
5.3.180.0050.04412.67
5.3.170.0070.03612.67
5.3.160.0090.03312.67
5.3.150.0100.03412.68
5.3.140.0090.03412.66
5.3.130.0100.03512.66
5.3.120.0110.03312.66
5.3.110.0050.04112.66
5.3.100.0070.03612.12
5.3.90.0070.03812.10
5.3.80.0110.03412.09
5.3.70.0100.04212.09
5.3.60.0110.03112.07
5.3.50.0020.04012.02
5.3.40.0090.03312.02
5.3.30.0080.03311.98
5.3.20.0040.03611.76
5.3.10.0070.03311.73
5.3.00.0140.04611.71
5.2.170.0090.0359.22
5.2.160.0040.0299.22
5.2.150.0030.0329.22
5.2.140.0050.0389.22
5.2.130.0050.0319.18
5.2.120.0060.0279.18
5.2.110.0100.0379.19
5.2.100.0090.0259.18
5.2.90.0070.0379.19
5.2.80.0060.0299.18
5.2.70.0060.0379.18
5.2.60.0050.0359.13
5.2.50.0050.0309.10
5.2.40.0070.0279.07
5.2.30.0060.0309.05
5.2.20.0100.0279.04
5.2.10.0100.0288.94
5.2.00.0070.0318.81
5.1.60.0040.0248.09
5.1.50.0060.0288.09
5.1.40.0060.0248.07
5.1.30.0060.0268.41
5.1.20.0070.0338.44
5.1.10.0050.0258.17
5.1.00.0040.0258.16
5.0.50.0050.0316.64
5.0.40.0040.0226.50
5.0.30.0050.0296.31
5.0.20.0030.0206.28
5.0.10.0060.0176.26
5.0.00.0050.0306.25
4.4.90.0030.0144.78
4.4.80.0040.0144.76
4.4.70.0050.0134.76
4.4.60.0030.0164.76
4.4.50.0000.0184.77
4.4.40.0040.0244.71
4.4.30.0030.0154.76
4.4.20.0050.0134.84
4.4.10.0060.0124.85
4.4.00.0040.0234.75
4.3.110.0050.0134.67
4.3.100.0050.0134.66
4.3.90.0020.0174.64
4.3.80.0030.0254.58
4.3.70.0030.0144.63
4.3.60.0000.0174.63
4.3.50.0020.0164.63
4.3.40.0040.0234.54
4.3.30.0010.0173.30
4.3.20.0020.0163.29
4.3.10.0020.0153.24
4.3.00.0070.0237.10

preferences:
141.4 ms | 1394 KiB | 7 Q