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); 

2、使用CURL代替file_get_contents

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;

}

3、使用gzip解压函数

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; 

}

使用：

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

$html=gzdecode($html);

我这边使用的第一种方法

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。