Question

How to create permutations of words without repetition in PHP

Answer 1

function permutations_of_words($items, $perms = array()) {
    if (empty($items)) {
        echo implode(' ', $perms) . "\n";
    } else {
        for ($i = 0; $i < count($items); $i++) {
            $newItems = $items;
            $newPerms = $perms;
            list($foo) = array_splice($newItems, $i, 1);
            array_unshift($newPerms, $foo);
            permutations_of_words($newItems, $newPerms);
        }
    }
}

$words = array("PHP", "scripting", "language");

permutations_of_words($words);



/*
run:

language scripting PHP
scripting language PHP
language PHP scripting
PHP language scripting
scripting PHP language
PHP scripting language

*/

 

70+ SQL courses for beginners and professionals