php字符转URL地址的函数_PHP教程

function tourl($str) {
  $str = preg_replace('/[^a-zA-Z0-9]+/', '-', $str);
  $str = trim($str, '-');
  return strtolower($str);
}

function strtourl($str) {
  $str = htmlentities($str, ENT_QUOTES, "UTF-8");
  $str = preg_replace('/&([a-z]{1,2})(?:acute|lig|grave|ring|tilde|uml|cedil|caron);/i','1',$str);
  $str = html_entity_decode($str, ENT_QUOTES, "UTF-8");
  $str = preg_replace('/[^a-z0-9]+/i', '-', $str);
  return strtolower($str);
}