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    header("Content-Type: text/html; charset=utf-8");
    echo strrev("´¦ÀiʹÓÃstrrev()º¯ÊýʱµÄÂÒÂeÎÊÌa")."<br>";

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    header("Content-Type: text/html; charset=utf-8");
    $str = '´¦ÀiʹÓÃstrrev()º¯ÊýʱµÄÂÒÂeÎÊÌa';
    function cnstrrev($str)
    {
      $len = strlen($str);
      for($i = 0; $i < $len; $i++)
      {
        $char = $str{0};
        if(ord($char) > 127) //ord()º¯ÊýÈ¡µÃµÚÒ»¸o×Ö*uµÄASCIIÂe£¬Èç¹u´oÓÚ0xa0(127)µÄ»°ÔoÊÇÖÐÎÄ×Ö*u
        {
          $i+=2;//utf-8±aÂeµÄÇe¿oÏ£¬Ò»¸oÖÐÎÄ×Ö*uÕ¼Èý¸o×Ö½Ú
          if($i < $len)
          {
            $arr[] = substr($str, 0, 3);//utf-8±aÂeµÄÇe¿oÏ£¬Ò»¸oÖÐÎÄ×Ö*uÕ¼Èý¸o×Ö½Ú
            $str = substr($str, 3);
          }
        }
        else
        {
          $arr[] = $char;
          $str = substr($str, 1);//*ñÔoΪ*ÇÖÐÎÄ£¬Õ¼Ò»¸o×Ö*u
        }
      }
      return join(array_reverse($arr));//ÒÔÏa*´µÄÔªËØ˳Ðo*µ»ØÊý×e£º
    }
    echo $str.'+'.cnstrrev($str);

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