PHP implements the method of obtaining the province and city where the IP is located based on the IP address. The province and city where the IP is located

PHP implements the method of obtaining the province and city where the IP is located based on the IP address. The province and city where the IP is located_PHP tutorial

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Release： 2016-07-13 09:55:24

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php implements the method of obtaining the province and city where the ip is located based on the IP address. The province and city where the ip is located

The method of obtaining the geographical location (province, city, etc.) based on the existing IP address

function GetIpLookup($ip = ''){  
  if(empty($ip)){  
    return '请输入IP地址'; 
  }  
  $res = @file_get_contents('http://int.dpool.sina.com.cn/iplookup/iplookup.php&#63;format=js&ip=' . $ip);  
  if(empty($res)){ return false; }  
  $jsonMatches = array();  
  preg_match('#\{.+&#63;\}#', $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;  
} 
$ipInfos = GetIpLookup('123.125.114.144'); //baidu.com IP地址  
var_dump($ipInfos);

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Send a simplified version

function getIpAddress(){  
  $ipContent  = file_get_contents("http://int.dpool.sina.com.cn/iplookup/iplookup.php&#63;format=js");  
  $jsonData = explode("=",$ipContent);   
  $jsonAddress = substr($jsonData[1], 0, -1);  
  return $jsonAddress;  
}  
$ip_info=json_decode(getIpAddress());

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PHP implements city switching or jump based on IP address

At this point, the problem is actually very simple. It can be solved with simple js. Paragraph C is as follows:

//Jump to the specified page to get the city based on the IP address

var city=''; //Jump to the specified page in all cities based on IP address

if(city.indexOf("Shanghai City")>=0){

window.location.href="http://shanghai.demo.com/"; }
Place the code A at the beginning and the code C above at the beginning and end of the code B respectively, and then we add the following code to the page that needs to be jumped:

Refresh the page. Does it achieve the desired effect?

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