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PHP转换IP地址到真实地址

Jun 21, 2016 am 08:55 AM
fread return

生在红旗下长在春风里,长期浸泡在河蟹社会里面所以久而久之就有了一些河蟹的思维方式,正好有一段时间在做一个.NET的网站访问统计系统,顺便想着怎么“监视”下每一个留言的博主们的所在地,于是就有了如今下图所示的根据获取到的留言者的IP地址得到留言者所在的地区,当然并没有河蟹社会监视人民群众的意思,纯属了解一下各位博主所在的真实地点,万一是个美女博主不就可以让我有线索可循。

  想要把IPv4地址转为真实的地址,肯定要参考IP数据库,商业的IP数据库存储在关系型数据库中,查询和使用都非常方便,但是成本不是个人和小公司愿意承受的,所以简单应用的思路就是利用一些免费的IP数据库或者一些大网站提供的查询API,他们的数据量足够我们使用了。

  1. 利用纯真IP数据库

  利用本地的QQWry.Dat文件(搜索下载一个QQWry.Dat 文件放到你的wordpress主题根目录下),优点是查询速度非常快,缺点是数据库文件要放在自己的空间内并且要偶尔更新数据库。时间关系废话不多说,下面是使用这个文件的函数,如果是在WordPress里面使用这个功能,把下面的代码写入主题下面的functions.php里面,然后在comments-list的输出即可。仅管理员可见话,则调用代码即可。如果是其他程序引用,输入一个有效的IPv4地址就可以得到一个真实的地址。

以下为引用的内容:<br><br>function convertip($ip) {<br>    $dat_path = TEMPLATEPATH."/QQWry.Dat";<br>    if(!$fd = @fopen($dat_path, "rb")){<br>        return "IP date file not exists or access denied";<br>    }<br>    $ip = explode(".", $ip);<br>    $ipNum = $ip[0] * 16777216 + $ip[1] * 65536 + $ip[2] * 256 + $ip[3];<br>    $DataBegin = fread($fd, 4);<br>    $DataEnd = fread($fd, 4);<br>    $ipbegin = implode("", unpack("L", $DataBegin));<br>    if($ipbegin     $ipend = implode("", unpack("L", $DataEnd));<br>    if($ipend     $ipAllNum = ($ipend - $ipbegin) / 7 + 1;<br>    $BeginNum = 0;<br>    $EndNum = $ipAllNum;<br>    while($ip1num>$ipNum $ip2num        $Middle= intval(($EndNum + $BeginNum) / 2);<br>        fseek($fd, $ipbegin + 7 * $Middle);<br>        $ipData1 = fread($fd, 4);<br>        if(strlen($ipData1)             fclose($fd);<br>            return "System Error";<br>        }<br>        $ip1num = implode("", unpack("L", $ipData1));<br>        if($ip1num         if($ip1num > $ipNum) {<br>            $EndNum = $Middle;<br>            continue;<br>        }<br>        $DataSeek = fread($fd, 3);<br>        if(strlen($DataSeek)             fclose($fd);<br>            return "System Error";<br>        }<br>        $DataSeek = implode("", unpack("L", $DataSeek.chr(0)));<br>        fseek($fd, $DataSeek);<br>        $ipData2 = fread($fd, 4);<br>        if(strlen($ipData2)             fclose($fd);<br>            return "System Error";<br>        }<br>        $ip2num = implode("", unpack("L", $ipData2));<br>        if($ip2num         if($ip2num             if($Middle == $BeginNum) {<br>                fclose($fd);<br>                return "Unknown";<br>            }<br>            $BeginNum = $Middle;<br>        }<br>    }<br>    $ipFlag = fread($fd, 1);<br>    if($ipFlag == chr(1)) {<br>        $ipSeek = fread($fd, 3);<br>        if(strlen($ipSeek)             fclose($fd);<br>            return "System Error";<br>        }<br>        $ipSeek = implode("", unpack("L", $ipSeek.chr(0)));<br>        fseek($fd, $ipSeek);<br>        $ipFlag = fread($fd, 1);<br>    }<br>    if($ipFlag == chr(2)) {<br>        $AddrSeek = fread($fd, 3);<br>        if(strlen($AddrSeek)             fclose($fd);<br>            return "System Error";<br>        }<br>        $ipFlag = fread($fd, 1);<br>        if($ipFlag == chr(2)) {<br>            $AddrSeek2 = fread($fd, 3);<br>            if(strlen($AddrSeek2)                 fclose($fd);<br>                return "System Error";<br>            }<br>            $AddrSeek2 = implode("", unpack("L", $AddrSeek2.chr(0)));<br>            fseek($fd, $AddrSeek2);<br>        } else {<br>            fseek($fd, -1, SEEK_CUR);<br>        }<br>        while(($char = fread($fd, 1)) != chr(0))<br>        $ipAddr2 .= $char;<br>        $AddrSeek = implode("", unpack("L", $AddrSeek.chr(0)));<br>        fseek($fd, $AddrSeek);<br>        while(($char = fread($fd, 1)) != chr(0))<br>        $ipAddr1 .= $char;<br>    } else {<br>        fseek($fd, -1, SEEK_CUR);<br>        while(($char = fread($fd, 1)) != chr(0))<br>        $ipAddr1 .= $char;<br><br>        $ipFlag = fread($fd, 1);<br>        if($ipFlag == chr(2)) {<br>            $AddrSeek2 = fread($fd, 3);<br>            if(strlen($AddrSeek2)                 fclose($fd);<br>                return "System Error";<br>            }<br>            $AddrSeek2 = implode("", unpack("L", $AddrSeek2.chr(0)));<br>            fseek($fd, $AddrSeek2);<br>        } else {<br>            fseek($fd, -1, SEEK_CUR);<br>        }<br>        while(($char = fread($fd, 1)) != chr(0)){<br>            $ipAddr2 .= $char;<br>        }<br>    }<br>    fclose($fd);<br>    if(preg_match("/http/i", $ipAddr2)) {<br>        $ipAddr2 = "";<br>    }<br>    $ipaddr = "$ipAddr1 $ipAddr2";<br>    $ipaddr = preg_replace("/CZ88.Net/is", "", $ipaddr);<br>    $ipaddr = preg_replace("/^s*/is", "", $ipaddr);<br>    $ipaddr = preg_replace("/s*$/is", "", $ipaddr);<br>    if(preg_match("/http/i", $ipaddr) $ipaddr == "") {<br>        $ipaddr = "Unknown";<br>    }<br>    $ipaddr = iconv("gbk", "utf-8//IGNORE", $ipaddr); <br>    if( $ipaddr != "  " )<br>        return $ipaddr;<br>    else<br>        $ipaddr = "地址未知!火星来客?";<br>        return $ipaddr;<br>}



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