我根据“Chandra Nakka”的答案写了一个类。希望它能帮助人们，它将信息从geoplugin保存到会话中，以便在调用信息时加载得更快。它还将值保存到一个私有数组中，因此在相同的代码中调用是最快的。
class Geo {
private $_ip = null;
private $_useSession = true;
private $_sessionNameData = 'GEO_SESSION_DATA';
private $_hasError = false;
private $_geoData = [];
const PURPOSE_SUPPORT = [
"all", "*", "location",
"request",
"latitude",
"longitude",
"accuracy",
"timezonde",
"currencycode",
"currencysymbol",
"currencysymbolutf8",
"country",
"countrycode",
"state", "region",
"city",
"address",
"continent",
"continentcode"
];
const CONTINENTS = [
"AF" => "Africa",
"AN" => "Antarctica",
"AS" => "Asia",
"EU" => "Europe",
"OC" => "Australia (Oceania)",
"NA" => "North America",
"SA" => "South America"
];
function __construct($ip = null, $deepDetect = true, $useSession = true)
{
// define the session useage within this class
$this->_useSession = $useSession;
$this->_startSession();
// define a ip as far as possible
$this->_ip = $this->_defineIP($ip, $deepDetect);
// check if the ip was set
if (!$this->_ip) {
$this->_hasError = true;
return $this;
}
// define the geoData
$this->_geoData = $this->_fetchGeoData();
return $this;
}
function get($purpose)
{
// making sure its lowercase
$purpose = strtolower($purpose);
// makeing sure there are no error and the geodata is not empty
if ($this->_hasError || !count($this->_geoData) && !in_array($purpose, self::PURPOSE_SUPPORT)) {
return 'error';
}
if (in_array($purpose, ['*', 'all', 'location'])) {
return $this->_geoData;
}
if ($purpose === 'state') $purpose = 'region';
return (isset($this->_geoData[$purpose]) ? $this->_geoData[$purpose] : 'missing: '.$purpose);
}
private function _fetchGeoData()
{
// check if geo data was set before
if (count($this->_geoData)) {
return $this->_geoData;
}
// check possible session
if ($this->_useSession && ($sessionData = $this->_getSession($this->_sessionNameData))) {
return $sessionData;
}
// making sure we have a valid ip
if (!$this->_ip || $this->_ip === '127.0.0.1') {
return [];
}
// fetch the information from geoplusing
$ipdata = @json_decode($this->curl("http://www.geoplugin.net/json.gp?ip=" . $this->_ip));
// check if the data was fetched
if (!@strlen(trim($ipdata->geoplugin_countryCode)) === 2) {
return [];
}
// make a address array
$address = [$ipdata->geoplugin_countryName];
if (@strlen($ipdata->geoplugin_regionName) >= 1)
$address[] = $ipdata->geoplugin_regionName;
if (@strlen($ipdata->geoplugin_city) >= 1)
$address[] = $ipdata->geoplugin_city;
// makeing sure the continentCode is upper case
$continentCode = strtoupper(@$ipdata->geoplugin_continentCode);
$geoData = [
'request' => @$ipdata->geoplugin_request,
'latitude' => @$ipdata->geoplugin_latitude,
'longitude' => @$ipdata->geoplugin_longitude,
'accuracy' => @$ipdata->geoplugin_locationAccuracyRadius,
'timezonde' => @$ipdata->geoplugin_timezone,
'currencycode' => @$ipdata->geoplugin_currencyCode,
'currencysymbol' => @$ipdata->geoplugin_currencySymbol,
'currencysymbolutf8' => @$ipdata->geoplugin_currencySymbol_UTF8,
'city' => @$ipdata->geoplugin_city,
'region' => @$ipdata->geoplugin_regionName,
'country' => @$ipdata->geoplugin_countryName,
'countrycode' => @$ipdata->geoplugin_countryCode,
'continent' => self::CONTINENTS[$continentCode],
'continentcode' => $continentCode,
'address' => implode(", ", array_reverse($address))
];
if ($this->_useSession) {
$this->_setSession($this->_sessionNameData, $geoData);
}
return $geoData;
}
private function _startSession()
{
// only start a new session when the status is 'none' and the class
// requires a session
if ($this->_useSession && session_status() === PHP_SESSION_NONE) {
session_start();
}
}
private function _defineIP($ip, $deepDetect)
{
// check if the ip was set before
if ($this->_ip) {
return $this->_ip;
}
// check if the ip given is valid
if (filter_var($ip, FILTER_VALIDATE_IP)) {
return $ip;
}
// try to get the ip from the REMOTE_ADDR
$ip = filter_input(INPUT_SERVER, 'REMOTE_ADDR', FILTER_VALIDATE_IP);
// check if we need to end the search for a IP if the REMOTE_ADDR did not
// return a valid and the deepDetect is false
if (!$deepDetect) {
return $ip;
}
// try to get the ip from HTTP_X_FORWARDED_FOR
if (($ip = filter_input(INPUT_SERVER, 'HTTP_X_FORWARDED_FOR', FILTER_VALIDATE_IP))) {
return $ip;
}
// try to get the ip from the HTTP_CLIENT_IP
if (($ip = filter_input(INPUT_SERVER, 'HTTP_CLIENT_IP', FILTER_VALIDATE_IP))) {
return $ip;
}
return $ip;
}
private function _hasSession($key, $filter = FILTER_DEFAULT)
{
return (isset($_SESSION[$key]) ? (bool)filter_var($_SESSION[$key], $filter) : false);
}
private function _getSession($key, $filter = FILTER_DEFAULT)
{
if ($this->_hasSession($key, $filter)) {
$value = filter_var($_SESSION[$key], $filter);
if (@json_decode($value)) {
return json_decode($value, true);
}
return filter_var($_SESSION[$key], $filter);
} else {
return false;
}
}
private function _setSession($key, $value)
{
if (is_array($value)) {
$value = json_encode($value);
}
$_SESSION[$key] = $value;
}
function emptySession($key) {
if (!$this->_hasSession($key)) {
return;
}
$_SESSION[$key] = null;
unset($_SESSION[$key]);
}
function curl($url)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
return $output;
}
}
用这个你可以调用的类来回答“op”问题
$country = (new \Geo())->get('country'); // United Kingdom
其他可用的属性是:
$geo = new \Geo('185.35.50.4');
var_dump($geo->get('*')); // allias all / location
var_dump($geo->get('country'));
var_dump($geo->get('countrycode'));
var_dump($geo->get('state')); // allias region
var_dump($geo->get('city'));
var_dump($geo->get('address'));
var_dump($geo->get('continent'));
var_dump($geo->get('continentcode'));
var_dump($geo->get('request'));
var_dump($geo->get('latitude'));
var_dump($geo->get('longitude'));
var_dump($geo->get('accuracy'));
var_dump($geo->get('timezonde'));
var_dump($geo->get('currencyCode'));
var_dump($geo->get('currencySymbol'));
var_dump($geo->get('currencySymbolUTF8'));
返回
array(15) {
["request"]=>
string(11) "185.35.50.4"
["latitude"]=>
string(7) "51.4439"
["longitude"]=>
string(7) "-0.1854"
["accuracy"]=>
string(2) "50"
["timezonde"]=>
string(13) "Europe/London"
["currencycode"]=>
string(3) "GBP"
["currencysymbol"]=>
string(2) "£"
["currencysymbolutf8"]=>
string(2) "£"
["city"]=>
string(10) "Wandsworth"
["region"]=>
string(10) "Wandsworth"
["country"]=>
string(14) "United Kingdom"
["countrycode"]=>
string(2) "GB"
["continent"]=>
string(6) "Europe"
["continentcode"]=>
string(2) "EU"
["address"]=>
string(38) "Wandsworth, Wandsworth, United Kingdom"
}
string(14) "United Kingdom"
string(2) "GB"
string(10) "Wandsworth"
string(10) "Wandsworth"
string(38) "Wandsworth, Wandsworth, United Kingdom"
string(6) "Europe"
string(2) "EU"
string(11) "185.35.50.4"
string(7) "51.4439"
string(7) "-0.1854"
string(2) "50"
string(13) "Europe/London"
string(3) "GBP"
string(2) "£"
string(2) "£"
