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如何去除字符串中的破折號｛｝——等所有中英文符號，只留下中文、字母、數(shù)字？

網(wǎng)上找了一段代碼可以去除 逗號之類 一部分符號，但還是不能去掉破折號——

function filter_mark($text){ 
  if(trim($text)=='')return ''; 
  $text=preg_replace("/[[:punct:]\s]/",' ',$text); 
  $text=urlencode($text); 
  $text=preg_replace("/(%7E|%60|%21|%40|%23|%24|%25|%5E|%26|%27|%2A|%28|%29|%2B|%7C|%5C|%3D|\-|_|%5B|%5D|%7D|%7B|%3B|%22|%3A|%3F|%3E|%3C|%2C|\.|%2F|%A3%BF|%A1%B7|%A1%B6|%A1%A2|%A1%A3|%A3%AC|%7D|%A1%B0|%A3%BA|%A3%BB|%A1%AE|%A1%AF|%A1%B1|%A3%FC|%A3%BD|%A1%AA|%A3%A9|%A3%A8|%A1%AD|%A3%A4|%A1%A4|%A3%A1|%E3%80%82|%EF%BC%81|%EF%BC%8C|%EF%BC%9B|%EF%BC%9F|%EF%BC%9A|%E3%80%81|%E2%80%A6%E2%80%A6|%E2%80%9D|%E2%80%9C|%E2%80%98|%E2%80%99|%EF%BD%9E|%EF%BC%8E|%EF%BC%88)+/",' ',$text); 
  $text=urldecode($text); 
  return trim($text); 
}