Modified Version of anagram-finder that reduces duplicate string operations, this time using pre-loaded array.

gistfile1.aw

<?php

    public function preloadArray($anagramSeed) {
        
        $fileinfo = new \SplFileInfo(RESOURCE.'wordlist.txt');
        $file = $fileinfo->openFile('r');
        
        $anagramSeedLength = strlen($anagramSeed);
        $anagramSeedAsArray = str_split($anagramSeed);
        
        $wordArray = array();
        foreach($file as $line):
            $line = trim($line);
            if(strlen($line) > 0 && strlen($line) <= $anagramSeedLength && $line != $anagramSeed){
                $wordArray[] = $line;
            }
        endforeach;
        
        $matchedWords = array();
        foreach($wordArray as $key=>$wordString):

            $word = str_split($wordString);
            $matchedLetters = 0;
            $letterPool = $anagramSeedAsArray;
            
            foreach($word as $key=>$letter):
                
                $foundLetterKey = array_search($letter, $letterPool); 
                
                if($foundLetterKey !== FALSE){
                    unset($letterPool[$foundLetterKey]);
                    $matchedLetters++;
                }
            endforeach;
            
            if($matchedLetters == count($word)){
                $matchedWords[] = implode("", $word);
            }
        endforeach;     
        
        return $matchedWords;
    }