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run code in 150+ php & hhvm versions
Bugs & Features
<?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) { $last =null; for($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); $ITER = 1000; for($i = 0 ; $i < $ITER ; $i++) { $chain = new Chain(40); $chain->kill(3); } $end = microtime(true); printf("Time per iteration = %3.2f microsecondsnr",(($end - $start) * 1000 / $ITER));
based on dL0cK
Output for 5.6.18, 7.1.0
Time per iteration = 0.08 microsecondsnr
Output for 7.0.14
Time per iteration = 0.06 microsecondsnr
Output for 7.0.0, 7.0.6
Time per iteration = 0.05 microsecondsnr
Output for 7.0.1 - 7.0.2, 7.0.4 - 7.0.5
Time per iteration = 0.04 microsecondsnr
Output for 7.0.3
Time per iteration = 0.03 microsecondsnr
Output for 5.4.10, hhvm-3.12.0
Time per iteration = 0.13 microsecondsnr
Output for 5.1.3, 5.2.0, 5.2.2 - 5.2.3, 5.2.5 - 5.2.6, 5.2.9, 5.2.11, 5.2.13 - 5.2.14, 5.2.16, 5.3.9, 5.3.15, 5.3.22, 5.4.40, hhvm-3.10.0
Time per iteration = 0.16 microsecondsnr
Output for 5.4.0, 5.4.3, 5.4.8, 5.4.26, 5.4.29, 5.5.34, 5.6.17, 5.6.28
Time per iteration = 0.12 microsecondsnr
Output for 5.5.24, 5.5.26, 5.5.29 - 5.5.30, 5.6.15, 5.6.21
Time per iteration = 0.09 microsecondsnr
Output for 5.4.1 - 5.4.2, 5.4.4 - 5.4.7, 5.4.9, 5.4.11 - 5.4.22, 5.4.24 - 5.4.25, 5.4.28, 5.4.30 - 5.4.35, 5.5.25, 5.5.33, 5.5.35, 5.6.13 - 5.6.14, 5.6.20
Time per iteration = 0.11 microsecondsnr
Output for 5.4.23, 5.5.27 - 5.5.28, 5.5.31 - 5.5.32, 5.6.8 - 5.6.12, 5.6.16, 5.6.19
Time per iteration = 0.10 microsecondsnr
Output for 5.4.45
Time per iteration = 0.26 microsecondsnr
Output for 5.1.5, 5.3.0 - 5.3.3, 5.3.6 - 5.3.8, 5.3.11 - 5.3.14, 5.3.16, 5.3.18 - 5.3.21, 5.3.23 - 5.3.27, 5.3.29, 5.4.38 - 5.4.39, 5.4.41 - 5.4.42, 5.4.44
Time per iteration = 0.15 microsecondsnr
Output for 5.3.4 - 5.3.5, 5.3.28, 5.4.43
Time per iteration = 0.14 microsecondsnr
Output for 5.1.4, 5.1.6, 5.2.4, 5.2.7 - 5.2.8, 5.2.10, 5.2.12, 5.2.17, 5.3.17, 5.4.37
Time per iteration = 0.17 microsecondsnr
Output for 5.4.36
Time per iteration = 0.21 microsecondsnr
Output for 5.2.1, 5.2.15, 5.3.10, 5.4.27
Time per iteration = 0.18 microsecondsnr
Output for 5.1.0, 5.1.2
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/8gcB7 on line 44 Time per iteration = 0.17 microsecondsnr
Output for 5.1.1
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/8gcB7 on line 44 Time per iteration = 0.16 microsecondsnr
Output for 5.0.2, 5.0.5
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/8gcB7 on line 44 Time per iteration = 0.29 microsecondsnr
Output for 5.0.4
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/8gcB7 on line 44 Time per iteration = 0.27 microsecondsnr
Output for 5.0.1, 5.0.3
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/8gcB7 on line 44 Time per iteration = 0.28 microsecondsnr
Output for 5.0.0
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/8gcB7 on line 44 Time per iteration = 0.29 microsecondsnr
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/8gcB7 on line 36
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/8gcB7 on line 36
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/8gcB7 on line 36
Process exited with code 255.