My algorithm of creating password lists based on user input

<?php
/* Word generator

Generates words based on specified words

PARAMETERS:
$aWords: words to use for generating

RETURNS:
ARRAY: words that will be created for generating passwords
*/
function CreateWords($aWords){
    // first three chars of each word
    $aFirstThreeChars = array();
    $aFirstThreeCharsLC = array();
    $aFirstThreeCharsUC = array();
    $aFirstThreeCharsNH = array();
    $aFirstThreeCharsNU = array();
    // full words
    $aFullWords = array();
    for($x=0;$x<count($aWords);$x++){
        if(strlen($aWords[$x])>2){
            $sWord = trim($aWords[$x]);
            $sWordTrim = substr($sWord,0,3);
            if(strlen($sWord)<3 || strlen($sWordTrim)<3){
                continue;
            }
            $aFirstThreeChars[] = $sWordTrim;
            $aFirstThreeCharsLC[] = strtolower($sWordTrim);
            $aFirstThreeCharsUC[] = strtoupper($sWordTrim);
            $aFirstThreeCharsNH[] = str_replace("-","",$sWordTrim);
            $aFirstThreeCharsNU[] = str_replace("_","",$sWordTrim);
            $aFullWords[] = $sWord;
            $aFullWords[] = strrev($sWord);
            $aFullWords[] = str_replace("-","",$sWord);
            $aFullWords[] = str_replace(" ","",$sWord);
            $aFullWords[] = str_replace("_","",$sWord);
        }
    }
    $aFirstThreeChars = array_unique(array_merge($aFirstThreeChars,$aFirstThreeCharsLC,$aFirstThreeCharsUC,$aFirstThreeCharsNH,$aFirstThreeCharsNU));
    // first three chars of each word reverse
    $aFirstThreeCharsRev = array();
    for($x=0;$x<count($aFirstThreeChars);$x++){
        $aFirstThreeCharsRev[] = @strrev($aFirstThreeChars[$x]);
    }
    return(array_unique(array_merge($aFirstThreeChars,$aFirstThreeCharsRev,$aFullWords)));
}

/* Password generator

Generates passwords based on specified words

PARAMETERS:
$aWords: words to use for generating
$aCommon: common words from common.php

RETURNS:
VOID: data is globally used
*/

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