Поиск и 3 символа

		if ($this->look == 'anyword'){
			foreach($words as $w){
				$w = trim($w);
				if(mb_strlen($w)>3){
					if(mb_strlen($w)==4){
						$this->against .= $w.'* ';
						$this->words   .= $w.' ';
					} else {
						$this->against .= $stemmer->stem_word($w).'* ';
						$this->words   .= $stemmer->stem_word($w).' ';
 
					}
				}
			}
		}