php实现根据IP地址获取其所在省市的方法

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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());