file_get_content通常的乱码就不说了，就是通过iconv可以转过来那种。

这里主要讲另外一种，服务器有gzip加速，造成的乱码。

解决方法：

1、如果服务器已经装了zlib库，用下面的代码可以轻易解决乱码问题。

$data = file_get_contents("compress.zlib://".$url); 

function curl_get($url, $gzip=false){
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 10);
if($gzip) curl_setopt($curl, CURLOPT_ENCODING, "gzip"); // 关键在这里
$content = curl_exec($curl);
curl_close($curl);
return $content;
}

function gzdecode($data) { 
  $len = strlen($data); 
  if ($len < 18 || strcmp(substr($data,0,2),"\x1f\x8b")) { 
    return null;  // Not GZIP format (See RFC 1952) 
  } 
  $method = ord(substr($data,2,1));  // Compression method 
  $flags  = ord(substr($data,3,1));  // Flags 
  if ($flags & 31 != $flags) { 
    // Reserved bits are set -- NOT ALLOWED by RFC 1952 
    return null; 
  } 
  // NOTE: $mtime may be negative (PHP integer limitations) 
  $mtime = unpack("V", substr($data,4,4)); 
  $mtime = $mtime[1]; 
  $xfl   = substr($data,8,1); 
  $os    = substr($data,8,1); 
  $headerlen = 10; 
  $extralen  = 0; 
  $extra     = ""; 
  if ($flags & 4) { 
    // 2-byte length prefixed EXTRA data in header 
    if ($len - $headerlen - 2 < 8) { 
      return false;    // Invalid format 
    } 
    $extralen = unpack("v",substr($data,8,2)); 
    $extralen = $extralen[1]; 
    if ($len - $headerlen - 2 - $extralen < 8) { 
      return false;    // Invalid format 
    } 
    $extra = substr($data,10,$extralen); 
    $headerlen += 2 + $extralen; 
  } 

  $filenamelen = 0; 
  $filename = ""; 
  if ($flags & 8) { 
    // C-style string file NAME data in header 
    if ($len - $headerlen - 1 < 8) { 
      return false;    // Invalid format 
    } 
    $filenamelen = strpos(substr($data,8+$extralen),chr(0)); 
    if ($filenamelen === false || $len - $headerlen - $filenamelen - 1 < 8) { 
      return false;    // Invalid format 
    } 
    $filename = substr($data,$headerlen,$filenamelen); 
    $headerlen += $filenamelen + 1; 
  } 

  $commentlen = 0; 
  $comment = ""; 
  if ($flags & 16) { 
    // C-style string COMMENT data in header 
    if ($len - $headerlen - 1 < 8) { 
      return false;    // Invalid format 
    } 
    $commentlen = strpos(substr($data,8+$extralen+$filenamelen),chr(0)); 
    if ($commentlen === false || $len - $headerlen - $commentlen - 1 < 8) { 
      return false;    // Invalid header format 
    } 
    $comment = substr($data,$headerlen,$commentlen); 
    $headerlen += $commentlen + 1; 
  } 

  $headercrc = ""; 
  if ($flags & 1) { 
    // 2-bytes (lowest order) of CRC32 on header present 
    if ($len - $headerlen - 2 < 8) { 
      return false;    // Invalid format 
    } 
    $calccrc = crc32(substr($data,0,$headerlen)) & 0xffff; 
    $headercrc = unpack("v", substr($data,$headerlen,2)); 
    $headercrc = $headercrc[1]; 
    if ($headercrc != $calccrc) { 
      return false;    // Bad header CRC 
    } 
    $headerlen += 2; 
  } 

  // GZIP FOOTER - These be negative due to PHP's limitations 
  $datacrc = unpack("V",substr($data,-8,4)); 
  $datacrc = $datacrc[1]; 
  $isize = unpack("V",substr($data,-4)); 
  $isize = $isize[1]; 

  // Perform the decompression: 
  $bodylen = $len-$headerlen-8; 
  if ($bodylen  0) { 
    switch ($method) { 
      case 8: 
        // Currently the only supported compression method: 
        $data = gzinflate($body); 
        break; 
      default: 
        // Unknown compression method 
        return false; 
    } 
  } else { 
    // I'm not sure if zero-byte body content is allowed. 
    // Allow it for now...  Do nothing... 
  } 

  // Verifiy decompressed size and CRC32: 
  // NOTE: This may fail with large data sizes depending on how 
  //       PHP's integer limitations affect strlen() since $isize 
  //       may be negative for large sizes. 
  if ($isize != strlen($data) || crc32($data) != $datacrc) { 
    // Bad format!  Length or CRC doesn't match! 
    return false; 
  } 
  return $data; 
}

$html=file_get_contents('http://www.nowamagic.net/librarys/veda/');
$html=gzdecode($html);

querylist的解决方法是：

[#zeyu#]

$str=QueryList::getInstance();
        //注册一个myGet方法到QueryList对象
        $str->bind('myGet',function ($url,$args = null,$otherArgs = []){
            try{
                //$this->get($url,$args,$otherArgs);
                $this->setHtml(iconv('gb2312','utf-8',file_get_contents("compress.zlib://".$url)));
            }catch(RequestException $e){
                $this->setHtml('');
            }
            return $this;
        });
        //$sstr=$str->get($uri)->find(".provincetr td a")->attrs('href');
        $ssHtml=$str->myGet($uri);

[/#zeyu#]

你可以替换里面的方法为上面三种方法的任意一种，当然，你可以做的更好一些，判断一下网页是否采用了gzip加速，如果没有则不去处理。

另外，这段代码里面统一转码了，就不要再用querylist的decode转码了。

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