清除HTML标记

/**

• 清除HTML标记

• @param string $str

• @return string
  */
  function dr_clearhtml($str) {

  $str = str_replace(
  array(’ ‘, ‘&’, ‘"’, ‘’’, ‘“’, ‘”’, ‘—’, ‘<’, ‘>’, ‘·’, ‘…’), array(’ ‘, ‘&’, ‘"’, "’", ‘“’, ‘”’, ‘—’, ‘<’, ‘>’, ‘·’, ‘…’), $str
  );

  $str = preg_replace("/<[a-z]+(.*)>/iU", “”, $str);
  $str = preg_replace("//iU", “”, $str);
  $str = preg_replace("/{.+}/U", “”, $str);
  $str = str_replace(array(chr(13), chr(10), ’ '), ‘’, $str);
  $str=stri{p}_{t}ags($str);

  return trim($str);
  }