ip转城市接口,ip转省份接口,ip转城市PHP方法

新浪接口(速度快)

$url = 'http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip='.$ip;
$arr = json_decode(file_get_contents($url),true);

淘宝接口(特别慢)

$url = 'http://ip.taobao.com/service/getIpInfo.php?ip='.$ip;
$arr = json_decode(file_get_contents($url),true);

ip转城市PHP的方法

function convertip($ip) {   
    $ip1num = 0;  
    $ip2num = 0;  
    $ipAddr1 ="";  
    $ipAddr2 ="";  
    $dat_path = './QQWry.Dat';          
    if(!preg_match("/^d{1,3}.d{1,3}.d{1,3}.d{1,3}$/", $ip)) {   
      return 'IP Address Error';   
    }    
    if(!$fd = @fopen($dat_path, 'rb')){   
      return 'IP date file not exists or access denied';   
    }    
    $ip = explode('.', $ip);   
    $ipNum = $ip[0] * 16777216 + $ip[1] * 65536 + $ip[2] * 256 + $ip[3];    
    $DataBegin = fread($fd, 4);   
    $DataEnd = fread($fd, 4);   
    $ipbegin = implode('', unpack('L', $DataBegin));   
    if($ipbegin < 0) $ipbegin += pow(2, 32);   
    $ipend = implode('', unpack('L', $DataEnd));   
    if($ipend < 0) $ipend += pow(2, 32);   
    $ipAllNum = ($ipend - $ipbegin) / 7 + 1;   
    $BeginNum = 0;   
    $EndNum = $ipAllNum;    
    while($ip1num>$ipNum || $ip2num<$ipNum) {   
        $Middle= intval(($EndNum + $BeginNum) / 2);   
        fseek($fd, $ipbegin + 7 * $Middle);   
        $ipData1 = fread($fd, 4);   
        if(strlen($ipData1) < 4) {   
            fclose($fd);   
            return 'System Error';   
        }  
        $ip1num = implode('', unpack('L', $ipData1));   
        if($ip1num < 0) $ip1num += pow(2, 32);   
    
        if($ip1num > $ipNum) {   
          $EndNum = $Middle;   
          continue;   
        }   
        $DataSeek = fread($fd, 3);   
        if(strlen($DataSeek) < 3) {   
          fclose($fd);   
          return 'System Error';   
        }   
        $DataSeek = implode('', unpack('L', $DataSeek.chr(0)));   
        fseek($fd, $DataSeek);   
        $ipData2 = fread($fd, 4);   
        if(strlen($ipData2) < 4) {   
          fclose($fd);   
          return 'System Error';   
        }   
        $ip2num = implode('', unpack('L', $ipData2));   
        if($ip2num < 0) $ip2num += pow(2, 32);    
        if($ip2num < $ipNum) {   
            if($Middle == $BeginNum) {   
              fclose($fd);   
              return 'Unknown';   
            }   
            $BeginNum = $Middle;   
        }   
    }    
    $ipFlag = fread($fd, 1);   
    if($ipFlag == chr(1)) {   
        $ipSeek = fread($fd, 3);   
        if(strlen($ipSeek) < 3) {   
            fclose($fd);   
            return 'System Error';   
        }   
        $ipSeek = implode('', unpack('L', $ipSeek.chr(0)));   
        fseek($fd, $ipSeek);   
        $ipFlag = fread($fd, 1);   
    }   
    if($ipFlag == chr(2)) {   
        $AddrSeek = fread($fd, 3);   
        if(strlen($AddrSeek) < 3) {   
            fclose($fd);   
            return 'System Error';   
        }   
        $ipFlag = fread($fd, 1);   
        if($ipFlag == chr(2)) {   
            $AddrSeek2 = fread($fd, 3);   
            if(strlen($AddrSeek2) < 3) {   
                fclose($fd);   
                return 'System Error';   
            }   
            $AddrSeek2 = implode('', unpack('L', $AddrSeek2.chr(0)));   
            fseek($fd, $AddrSeek2);   
        } else {   
            fseek($fd, -1, SEEK_CUR);   
        }   
        while(($char = fread($fd, 1)) != chr(0))   
        $ipAddr2 .= $char;   
        $AddrSeek = implode('', unpack('L', $AddrSeek.chr(0)));   
        fseek($fd, $AddrSeek);   
        while(($char = fread($fd, 1)) != chr(0))   
        $ipAddr1 .= $char;   
    } else {   
        fseek($fd, -1, SEEK_CUR);   
        while(($char = fread($fd, 1)) != chr(0))   
        $ipAddr1 .= $char;   
        $ipFlag = fread($fd, 1);   
        if($ipFlag == chr(2)) {   
            $AddrSeek2 = fread($fd, 3);   
            if(strlen($AddrSeek2) < 3) {   
              fclose($fd);   
              return 'System Error';   
            }   
            $AddrSeek2 = implode('', unpack('L', $AddrSeek2.chr(0)));   
            fseek($fd, $AddrSeek2);   
        } else {   
            fseek($fd, -1, SEEK_CUR);   
        }   
        while(($char = fread($fd, 1)) != chr(0)){   
            $ipAddr2 .= $char;   
        }   
    }   
    fclose($fd);    
    if(preg_match('/http/i', $ipAddr2)) {   
        $ipAddr2 = '';   
    }
    // $ipAddr1河北省石家庄市 $ipAddr2联通
    // $ipaddr = "$ipAddr1 $ipAddr2";   
    $ipaddr = $ipAddr1;
    $ipaddr = preg_replace('/CZ88.NET/is', '', $ipaddr);   
    $ipaddr = preg_replace('/^s*/is', '', $ipaddr);   
    $ipaddr = preg_replace('/s*$/is', '', $ipaddr);   

    if(preg_match('/http/i', $ipaddr) || $ipaddr == '') {   
        $ipaddr = 'Unknown';   
    }   
    return $ipaddr;   
}

文件下载地址:

链接：https://pan.baidu.com/s/1gfD5uzL 密码：txp3

转http://blog.csdn.net/aaron_luchen/article/details/6637799