speed up a php script

Hello bidders,

Please only bid if you have your own server to test the code on thanks.

I have a php code which is working but sometimes it takes too long to execute.

Fatal error: Maximum execution time of 30 seconds exceeded in

I have tried adding ini_set('max_execution_time', 300); //300 seconds = 5 minutes but that results in using up the memory and the rest of my page doesn’t load.

Basicly with my code i can add any one word to it, 9 letter words seem to work but any word larger than 9 letters the code can’t execute fast enough due to there being too many combinations to search in the loop.

See examples here: [login to view URL]

"stop" works fine but "abbreviation" is too long

is there anyway to speed up the following code



$checked = array();

function permute($str, $l, $r, $pspell_link)


global $checked;

if ($l == $r) {

if (empty($checked[$str])) {

$checked[$str] = true;

if (pspell_check($pspell_link, $str)) {

echo "<li><strong>" . ucwords($str) . "</strong></li>\n";



} else {

for ($i = $l; $i <= $r; $i++) {

$str = swap($str, $l, $i);

permute($str, $l + 1, $r, $pspell_link);

$str = swap($str, $l, $i);




function swap($a, $i, $j)



$charArray = str_split($a);

$temp = $charArray[$i];

$charArray[$i] = $charArray[$j];

$charArray[$j] = $temp;

return implode($charArray);


$str = "$anagram";

$n = strlen($str);

$pspell_link = pspell_new("en");

permute($str, 0, $n - 1, $pspell_link);



Квалификация: PHP, Javascript, MySQL, Архитектура ПО, HTML

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О работодателе:
( 27 отзыв(-а, -ов) ) chichester, United Kingdom

ID проекта: #21114819



Hello. Your algorithm does not improve cardinally and it depends directly on the length of a word. You use a full permutation search, which has a complexity of n! (See [login to view URL]) For exa Больше

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