php对表单内容进行处理

/**	 * 过滤HTML内容后返回	 *	 * @param      $string	 * @param bool $html	 *	 * @return array|string	 */	public static function safeOutput($string, $html = false) {		if (!$html)			$string = strip_tags($string);		return @Tools::htmlentitiesUTF8($string, ENT_QUOTES);	}	public static function htmlentitiesUTF8($string, $type = ENT_QUOTES) {		if (is_array($string))			return array_map(array('Tools', 'htmlentitiesUTF8'), $string);		return htmlentities((string)$string, $type, 'utf-8');	}	public static function htmlentitiesDecodeUTF8($string) {		if (is_array($string))			return array_map(array('Tools', 'htmlentitiesDecodeUTF8'), $string);		return html_entity_decode((string)$string, ENT_QUOTES, 'utf-8');	}	/**	 * 对POST内容进行处理	 *	 * @return array	 */	public static function safePostVars() {		if (!is_array($_POST))			return array();		$_POST = array_map(array('Tools', 'htmlentitiesUTF8'), $_POST);	}