<?php

class Text {

	private $text;

	public function __construct($text) {
		if (!$text) {
			$text = "";
		}
		$this->text = $this->cleanup($text);
	}

	function cleanup($text) {
        $text = str_replace("", " ", $text);
        $text = str_replace("\t", " ", $text);
        $text = str_replace("\r", " ", $text);
        $text = str_replace("\n", " ", $text);
        $text = str_replace("\"", "", $text);
        $text = str_replace(",", " ", $text);
        $text = str_replace("–", "-", $text);
        $text = str_replace("—", "-", $text);
        $text = str_replace("Ø", "0", $text);
        $text = str_replace("~", "-", $text);
        $text = str_replace("--", "-", $text);
		$text = preg_replace('/\s\s+/', ' ', $text);
		return trim($text);
	}

	public function get_text() {
		return $this->text;
	}

	public function words() {
        $text = preg_replace('/([^A-Z\-0-9]+)/', ' ', strtoupper($this->text));
        $words = preg_split('/\s+/', $text);
        return $words;
	}
}