【www.bbyears.com--php函数】
php教程
//===================================
//
// 功能：IP地址获取真实地址函数
// 参数：$ip - IP地址
//
//===================================
function convertip($ip) {
$dat_path = "../QQWry.Dat";
if(!preg_match("/^d{1,3}.d{1,3}.d{1,3}.d{1,3}$/", $ip)) {
return "IP Address Error";
}
if(!$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 = "";
}
$ipaddr = "$ipAddr1 $ipAddr2";
$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 $ipaddr;
}
?>
使用说明：
1、先把上面的代码保存为php文件，然后在网上下载纯真IP数据库教程QQWry.Dat，修改上述函数中的数据库连接路径代码“$dat_path = "../QQWry.Dat";”；
2、调用函数：
echo convertip($navinfor["infoip"]);
?>