PHP method to obtain the province and city based on the IP address_PHP tutorial

php implements the method of obtaining the province and city based on the IP address

Today, let’s discuss how to obtain the user’s IP address in PHP, PHP determines the city where the user is located based on the IP, and PHP The problem of city switching or jumping based on IP.

How to obtain the geographical location (province, city, etc.) of an existing IP address

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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?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; } $ipInfos = GetIpLookup('123.125.114.144'); //baidu.com IP地址 var_dump($ipInfos);

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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());

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function GetIpLookup($ip = ''){ if(empty($ip)){

return 'Please enter 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; } $ipInfos = GetIpLookup('123.125.114.144'); //baidu.com IP address var_dump($ipInfos);

Send a simplified version again 　?

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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 realizes city switching or jump based on IP address At this point, the problem is actually very simple and can be solved with simple js. Paragraph C is as follows: // Jump to the specified page js to get the city based on the IP address var city=''; //Jump to the specified page based on IP address for all cities 　if(city.indexOf("Shanghai City")>=0){ window.location.href="http://shanghai.demo.com/"; } Put the A section of code at the beginning and the C section of code above at the beginning and end of the B section of code respectively, and then we add the following code to the page that needs to be jumped: 　 Refresh the page. Did you achieve the desired effect? ​​ The above is the entire content of this article, I hope you all like it. http://www.bkjia.com/PHPjc/993430.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/993430.htmlTechArticlephp implements the method of obtaining the province and city based on the IP address. Today, let’s discuss how to obtain the user’s IP in PHP Address, PHP determines the city where the user is located based on IP, and PHP implements city switching based on IP...