3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Person { function __construct($c) { $this->count = $c; } function getPrev() { return $this->prev; } function setPrev($pr) { $this->prev = $pr; } function getNext() { return $this->next; } function setNext($nxt) { $this->next = $nxt; } function shout($shout, $nth) { if ($shout < $nth) { return $shout + 1; } $this->getPrev()->setNext($this->getNext()); $this->getNext()->setPrev($this->getPrev()); return 1; } } class Chain { var $first; function __construct($size) { for($i = 0; $i < $size ; $i++) { $current = new Person($i); if ($this->first == null) $this->first = $current; if ($last != null) { $last->setNext($current); $current->setPrev($last); } $last = $current; } $this->first->setPrev($last); $last->setNext($this->first); } function kill($nth) { $current = $this->first; $shout = 1; while($current->getNext() !== $current) { $shout = $current->shout($shout,$nth); $current = $current->getNext(); } $this->first = $current; } } $start = microtime(true); $ITER = 100000; for($i = 0 ; $i < $ITER ; $i++) { $chain = new Chain(40); $chain->kill(3); } $end = microtime(true); printf("Time per iteration = %3.2f microsecondsnr",(($end - $start) * 1000000 / $ITER))

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)
5.4.320.0040.03712.53
5.4.310.0080.03512.53
5.4.300.0110.03012.53
5.4.290.0040.03812.52
5.4.280.0070.03412.42
5.4.270.0060.03512.42
5.4.260.0070.03612.42
5.4.250.0050.03812.42
5.4.240.0090.03312.42
5.4.230.0130.03012.41
5.4.220.0100.03212.41
5.4.210.0070.03412.41
5.4.200.0070.03612.41
5.4.190.0040.03712.41
5.4.180.0020.03912.41
5.4.170.0090.03112.42
5.4.160.0100.03212.42
5.4.150.0060.03612.41
5.4.140.0080.03612.10
5.4.130.0090.03312.09
5.4.120.0070.03512.05
5.4.110.0060.03612.04
5.4.100.0070.03512.04
5.4.90.0050.04212.04
5.4.80.0040.04012.04
5.4.70.0070.03512.04
5.4.60.0040.03812.04
5.4.50.0070.03612.04
5.4.40.0040.03712.03
5.4.30.0050.03712.02
5.4.20.0100.03812.02
5.4.10.0070.03912.03
5.4.00.0060.04011.51
5.3.290.0060.05412.80
5.3.280.0070.04012.71
5.3.270.0040.04112.72
5.3.260.0020.04212.72
5.3.250.0070.03512.72
5.3.240.0060.03612.72
5.3.230.0090.03812.71
5.3.220.0090.03412.68
5.3.210.0050.04112.68
5.3.200.0060.03612.68
5.3.190.0120.03112.68
5.3.180.0120.03112.67
5.3.170.0080.04212.67
5.3.160.0090.03612.68
5.3.150.0070.03612.68
5.3.140.0070.03512.66
5.3.130.0050.04012.65
5.3.120.0110.03512.66
5.3.110.0180.02812.66
5.3.100.0080.03412.14
5.3.90.0150.04212.12
5.3.80.0090.03312.11
5.3.70.0100.03212.11
5.3.60.0070.03512.10
5.3.50.0060.04212.04
5.3.40.0070.03912.04
5.3.30.0050.03612.00
5.3.20.0080.03111.78
5.3.10.0000.03911.75
5.3.00.0040.03611.73
5.2.170.0030.0329.25
5.2.160.0050.0299.25
5.2.150.0050.0299.24
5.2.140.0050.0299.24
5.2.130.0040.0299.20
5.2.120.0040.0289.20
5.2.110.0060.0279.21
5.2.100.0050.0279.20
5.2.90.0100.0239.20
5.2.80.0030.0319.20
5.2.70.0030.0319.20
5.2.60.0030.0319.15
5.2.50.0030.0319.12
5.2.40.0030.0309.09
5.2.30.0050.0289.07
5.2.20.0010.0329.06
5.2.10.0030.0298.96
5.2.00.0030.0308.83
5.1.60.0050.0238.11
5.1.50.0040.0248.11
5.1.40.0060.0228.10
5.1.30.0050.0258.45
5.1.20.0050.0258.47
5.1.10.0080.0218.19
5.1.00.0030.0268.19
5.0.50.0040.0196.67
5.0.40.0000.0226.53
5.0.30.0040.0306.34
5.0.20.0040.0186.30
5.0.10.0040.0196.29
5.0.00.0030.0316.28
4.4.90.0040.0144.78
4.4.80.0030.0144.75
4.4.70.0040.0134.75
4.4.60.0020.0164.75
4.4.50.0030.0144.77
4.4.40.0030.0244.71
4.4.30.0010.0174.76
4.4.20.0020.0164.84
4.4.10.0010.0174.85
4.4.00.0040.0234.76
4.3.110.0020.0164.67
4.3.100.0040.0134.66
4.3.90.0020.0144.63
4.3.80.0040.0234.59
4.3.70.0020.0154.63
4.3.60.0020.0154.63
4.3.50.0030.0144.63
4.3.40.0030.0244.54
4.3.30.0020.0163.31
4.3.20.0010.0163.29
4.3.10.0050.0123.25
4.3.00.0130.0207.08

preferences:
147.85 ms | 1394 KiB | 7 Q