PHP tagCleaner

tagCleaner

    /**
     * Send it a string of words and it will return
     * @return array of clean tags
     */
    protected function tagCleaner($tags = null){
        // make lowercase
        $tags = strtolower($tags);
        // remove the crap
        $tags = str_replace([',', '|', '/', '.', '#'], '', $tags);
        // explod string at space into tags
        $tags = explode(" ", $tags);
        // remove arrays that have any of these words
        $tags = array_diff($tags, array(
                "a","about","above","after","again","against","all","am","an","and","any","are",
                "aren't","as","at","be","because","been","before","being","below","between","both",
                "but","by","can't","cannot","could","couldn't","did","didn't","do","does","doesn't",
                "doing","don't","down","during","each","few","for","from","further","had","hadn't",
                "has","hasn't","have","haven't","having","he","he'd","he'll","he's","her","here",
                "here's","hers","herself","him","himself","his","how","how's","i","i'd","i'll","i'm",
                "i've","if","in","into","is","isn't","it","it's","its","itself","let's","me","more",
                "most","mustn't","my","myself","no","nor","not","of","off","on","once","only","or",
                "other","ought","our","ours","ourselves","out","over","own","same","shan't","she",
                "she'd","she'll","she's","should","shouldn't","so","some","such","than","that",
                "that's","the","their","theirs","them","themselves","then","there","there's","these",
                "they","they'd","they'll","they're","they've","this","those","through","to","too",
                "under","until","up","very","was","wasn't","we","we'd","we'll","we're","we've","were",
                "weren't","what","what's","when","when's","where","where's","which","while","who",
                "who's","whom","why","why's","with","won't","would","wouldn't","you","you'd","you'll",
                "you're","you've","your","yours","yourself","yourselves"));
        // remove any empty arrays
        $tags = array_filter(array_map('trim', $tags));
        // send array back
        return $tags;
    }