/**
* 释放标签
*
* @access public
* @param string $html 输入串
* @return string
*/
public static function releaseHTML($html)
{
$html = trim(str_replace(array_keys(self::$_lockedBlocks), array_values(self::$_lockedBlocks), $html));
self::$_lockedBlocks = array('<p></p>' => '');
return $html;
}
