3v4l.org

run code in 300+ PHP versions simultaneously
<?php <?php class Foo { private $id; public function __construct() { $id = $used++; } public function getId() { return $id; } } $a = new Foo; // $a is a pointer pointing to Foo object 0 $b = $a; // $b is a pointer pointing to Foo object 0, however, $b is a copy of $a unlink($a); var_dump($b);

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)
5.4.310.0060.03912.49
5.4.300.0050.03912.50
5.4.290.0070.03712.49
5.4.280.0070.03712.39
5.4.270.0070.04412.39
5.4.260.0060.04612.39
5.4.250.0090.04312.39
5.4.240.0060.03912.39
5.4.230.0070.03912.38
5.4.220.0060.03912.38
5.4.210.0070.03612.38
5.4.200.0140.03112.38
5.4.190.0070.04612.38
5.4.180.0060.03612.38
5.4.170.0050.03712.38
5.4.160.0060.03512.38
5.4.150.0070.03512.38
5.4.140.0050.03812.07
5.4.130.0070.03412.05
5.4.120.0080.03212.02
5.4.110.0040.03812.01
5.4.100.0090.03412.01
5.4.90.0070.03712.01
5.4.80.0110.03712.01
5.4.70.0120.02812.00
5.4.60.0100.03312.00
5.4.50.0090.03212.01
5.4.40.0050.03611.99
5.4.30.0060.03511.99
5.4.20.0070.03411.99
5.4.10.0030.03711.99
5.4.00.0060.03611.48
5.3.280.0050.03912.71
5.3.270.0100.03512.73
5.3.260.0080.03612.72
5.3.250.0080.04112.72
5.3.240.0110.04312.72
5.3.230.0060.05212.71
5.3.220.0090.04912.68
5.3.210.0120.04112.68
5.3.200.0050.03812.68
5.3.190.0040.03912.68
5.3.180.0040.03812.67
5.3.170.0030.04012.67
5.3.160.0070.03612.67
5.3.150.0050.03812.68
5.3.140.0070.03612.66
5.3.130.0050.04012.66
5.3.120.0060.04012.66
5.3.110.0040.05412.66
5.3.100.0060.03712.12
5.3.90.0070.03512.08
5.3.80.0070.03512.07
5.3.70.0070.03512.07
5.3.60.0050.03712.07
5.3.50.0080.03412.00
5.3.40.0050.04312.00
5.3.30.0090.03111.95
5.3.20.0060.04311.73
5.3.10.0030.03811.70
5.3.00.0050.03811.68
5.2.170.0040.0319.18
5.2.160.0050.0289.18
5.2.150.0020.0349.18
5.2.140.0020.0329.18
5.2.130.0040.0309.14
5.2.120.0030.0309.14
5.2.110.0060.0329.14
5.2.100.0060.0289.14
5.2.90.0040.0309.14
5.2.80.0050.0309.14
5.2.70.0040.0329.14
5.2.60.0040.0319.09
5.2.50.0060.0319.06
5.2.40.0070.0329.04
5.2.30.0090.0279.01
5.2.20.0070.0289.00
5.2.10.0050.0298.93
5.2.00.0030.0308.79
5.1.60.0040.0248.07
5.1.50.0080.0218.06
5.1.40.0030.0258.05
5.1.30.0040.0268.40
5.1.20.0030.0278.42
5.1.10.0030.0278.14
5.1.00.0030.0268.14
5.0.50.0040.0216.62
5.0.40.0030.0196.48
5.0.30.0040.0346.30
5.0.20.0030.0206.27
5.0.10.0010.0226.24
5.0.00.0020.0316.23
4.4.90.0040.0144.78
4.4.80.0010.0174.75
4.4.70.0010.0184.75
4.4.60.0030.0154.75
4.4.50.0020.0164.77
4.4.40.0020.0264.71
4.4.30.0040.0144.76
4.4.20.0040.0154.85
4.4.10.0020.0174.85
4.4.00.0020.0254.76
4.3.110.0020.0164.67
4.3.100.0020.0154.66
4.3.90.0020.0154.63
4.3.80.0020.0254.58
4.3.70.0020.0154.63
4.3.60.0040.0134.63
4.3.50.0010.0174.63
4.3.40.0020.0254.54
4.3.30.0030.0143.29
4.3.20.0010.0163.26
4.3.10.0010.0163.22
4.3.00.0030.0237.14

preferences:
138.39 ms | 1394 KiB | 7 Q