PHP Implementation method _php instance based on IP address to obtain its province

Ways to get their geographic location (provinces, cities, etc.) based on existing IP addresses

function Getiplookup ($ip = ") {    if (empty ($ip)) {      return ' Please enter the IP address ';   }    $res = @file_get_contents (' http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip= '. $ip);    if (empty ($res)) {return false;}    $jsonMatches = Array ();    Preg_match (' #\{.+?\}# ', $res, $jsonMatches);    if (!isset ($jsonMatches [0])) {return false;}    $json = Json_decode ($jsonMatches [0], true);    if (Isset ($json [' ret ']) && $json [' ret '] = = 1) {      $json [' ip '] = $IP;      unset ($json [' ret ']);    } else{      return false;    }    return $json;  } $ipInfos = Getiplookup (' 123.125.114.144 '); Baidu.com IP Address  

and send a simplified version of

function getipaddress () {    $ipContent  = file_get_contents ("http://int.dpool.sina.com.cn/iplookup/ Iplookup.php?format=js ");    $jsonData = explode ("=", $ipContent);     $jsonAddress = substr ($jsonData [1], 0,-1);    return $jsonAddress;  }  $ip _info=json_decode (Getipaddress ());  

PHP enables city switching or jumping based on IP address

Here, in fact, the problem is very simple, with simple JS on all. Paragraph c is as follows:

Jump to specified page according to IP address JS get the city

var city= ' <?echo ipCity ($xp _userip);? > '; Jump to a specific page based on IP address for all cities

if (City.indexof ("Shanghai City") >=0) {

Window.location.href= "http://shanghai.demo.com/"; }
Put the section a code at the beginning and the C code above in the head and tail of the B-segment code, and then we add the following code to the page where we need to jump:

Refresh the page, is not to achieve the desired effect?

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