Several ways to obtain IP geographical information in php

Method one is to use the pure IP database. You can find a lot of this on the Internet. The disadvantage is that the update is a bit slow. Method 2: Use the interface of the portal website Currently, it is known that Tencent, Sina, NetEase, Sohu and Google provide IP address query API, but the only ones that can be found are Tencent, Sina and NetEase. Google seems to use Google Maps, so I have not researched it. After looking at several domestic Tencent services, they provide JavaScript, NetEase provides XML, and Sina has a variety of formats available. Note that non-XML data sources are all in GBK format, regardless of whether they are JavaScript calls or PHP calls. You need to convert the encoding, otherwise you will get garbled codes. What needs more attention is that if you query multiple IPs at once, using the portal's API to query will be very slow. I probably wrote a for loop and tried it, whether using PHP to parse XML or the file_get_contents() function to obtain the content. , querying more than 10 times will become very slow and may even time out.

Tencent’s IP address API interface address: http://fw.qq.com/ipaddress, the returned data format is: var IPData = new Array("123.124.2.85","","Beijing","" );, a JavaScript object, it is not yet known how to enter an IP query.

Sina’s IP address query interface: http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js

Sina multi-region testing method: http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=123.124.2.85

NetEase Youdao’s IP address query interface: http://www.youdao.com/smartresult-xml/search.s?type=ip&q=123.124.2.85 Use JS code to call Tencent’s API interface:

< ;script>document.write("Your IP is: "+IPData[0]+", from: "+IPData[2]);
//The PHP calling method of Tencent API
function getIpPlace( ){
 $ip=file_get_contents("http://fw.qq.com/ipaddress");
 $ip=str_replace('"',' ',$ip);
 $ip2=explode("(", $ip);
 $a=substr($ip2[1],0,-2);
 $b=explode(",",$a);
 return $b;
}
$ip=getIpPlace() ;
print_r($ip);
//Calling the query interface requires crawling the web page. There are three methods. The first is curl, the second is
//file_get_contents, and the third is fopen->fread->fclose , recommend the second method
/*
 *Get the IP location based on the address of Tencent IP Sharing Plan, which is more accurate
 */
function getIPLoc($queryIP){
$url = 'http://ip.qq.com/ cgi-bin/searchip?searchip1='.$queryIP;
$ch = curl_init($url);
curl_setopt($ch,CURLOPT_ENCODING ,'gb2312');
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true); // Get data and return
$result = curl_exec($ch);
$result = mb_convert_encoding($result, "utf-8", "gb2312"); // Encoding conversion, otherwise garbled characters
 curl_close($ch);
preg_match("@(.*)@iU",$result,$ipArray);
$loc = $ipArray[1] ;
return $loc;
}
//Query the IP address according to the Tencent interface and use file_get_contents to grab the webpage
function getIPLoc($queryIP){
$url = 'http://ip .qq.com/cgi-bin/searchip?searchip1='.$queryIP;
$result = file_get_contents($url);
$result = mb_convert_encoding($result, "utf-8", "gb2312"); // Encoding conversion, otherwise garbled characters
preg_match("@(.*)@iU",$result,$ipArray);
$loc = $ipArray[1];
 return $loc;
}
//Query the IP address according to the Tencent interface, use fopen->fread->fclose to grab the webpage
function getIPLoc($queryIP){
$url = 'http://ip.qq. com/cgi-bin/searchip?searchip1='.$queryIP;
$handle = fopen ("$url", "rb");
$result = "";
do {
 $data = fread($handle, 1024);
 if (strlen($data) == 0) {
 break;
 }
 $result .= $data;
} while(true);
$result = mb_convert_encoding($result, "utf-8" , "gb2312"); // Encoding conversion, otherwise the code will be garbled
preg_match("@(.*)@iU",$result,$ipArray);
$loc = $ipArray[1];
return $loc;
}

/********Note: 1. When using file_get_contents and fopen, allow_url_fopen must be enabled. Method: Edit php.ini and set allow_url_fopen = On. When allow_url_fopen is turned off, neither fopen nor file_get_contents can open remote files. 2. To use curl, you must open curl. Method: Modify php.ini under Windows, remove the semicolon in front of extension=php_curl.dll, and copy ssleay32.dll and libeay32.dll to C: WINDOWSsystem32; under Linux, install the curl

 extension* ****/
//The fifth and sixth Sina query ip interface is geographical information
function getiploc($IP_ip){
$IP_str = @file_get_contents('http://int.dpool.sina .com.cn/iplookup/iplookup.php?ip='.$IP_ip);
 if(!empty($IP_str)){
 $IP_tmp = explode(" ", $IP_str);
 $IP_city = iconv(" GBK", "UTF-8", $IP_tmp[5]);
return $IP_city;
}

//Youdao API PHP calling method
$url = "http:www.youdao.com/smartresult-xml /search.s?type=ip&q=".$ip;
$doc = new DOMDocument();
 $doc->load($url);
 $smartresult = $doc->getElementsByTagName("product") ;
 foreach($smartresult as $product)
 {
 $locations = $product->getElementsByTagName("location");
 $location = $locations->item(0)->nodeValue;
 }
 if ($location != "")
 {
 echo $i.".".$ip;
 echo " User from ".$location."";
 }
 else
 {
 echo $i."." .$ip;
 echo "Netizens from Mars";
 }
public function sinaIPApi($ip){
 $str = file_get_contents("http://int.dpool.sina.com.cn/iplookup/iplookup.php ?ip=".$ip);
 $str = iconv("gbk", "utf-8//IGNORE", $str);
 preg_match_all("/[x{4e00}-x{9fa5}]+/ u",$str,$get);
 $add = implode('',$get[0]);
 return $add;
}
//$get is a great two-dimensional array

The Sina API can also use the file_get_contents() function to obtain the address like the Tencent API and use a series of string functions to process it. Use regular expressions to provide strings containing Chinese from Sina's return results and segment them. Store a two-dimensional array. This may only be useful for Sina's API and may contain bugs.

For example, after querying the IP address assigned to me by the school, I used the $get variable in the var_dump() function to get the following results: array(1) { [0]=> array(6) { [0]=> string(6) "China" [1]=> string(6) "Beijing" [2]=> string(6) "Beijing " [3]=> string(9) "Education Network" [4]=> string(6) "School" [5]=> string(18) "China University of Geosciences" } }, and the result of the function output is "Beijing Education Network School China University of Geosciences, Beijing, China" I hope my ideas and methods can be useful to others.