- 我的数据库中存储了经度和纬度。
- 是否有任何函数可以传递值并获取位置。
试试这个，希望这对你有帮助
function get_location($lat, $lon) {
$url = "http://maps.googleapis.com/maps/api/geocode/json?latlng=" .
$lat . "," . $lon . "&sensor=false";
$json = @file_get_contents($url);
$data = json_decode($json);
$status = $data->status;
$address = '';
if ($status == "OK") {
$address = $data->results[0]->formatted_address;
return $address;
} else
return '';
}
echo get_location($lat, $lon); //function call
如果我理解正确，您为访问者存储了纬度和经度。为了获取具有这些值的地址，您需要使用第三方 API 对位置进行"反向地理编码"。
一些选项是：
-谷歌的地理编码服务
-地图框的接口
-OSM可能也有东西。
您可以使用类似curl的东西来查询这些API。来自Mapbox网站的示例
<?php
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "https://api.mapbox.com/geocoding/v5/mapbox.places/-73.989,40.733.json?access_token=your-access-token",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_CUSTOMREQUEST => "GET",
));
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}
以下是我发现的一个片段的修改版本，它使用 http://ipinfodb.com/ip_locator.php 来获取其信息。请记住，您也可以向他们申请 API 密钥，并直接使用 API 获取您认为合适的信息。正如你 http://ipinfodb.com/ip_location_api.php 看到的，他们有从PHP到JavaScript到 ASP.Net 的所有例子。如前所述，下面不需要密钥，因为它会拉取他们的公共页面和正则表达式通过页面来获取指定的信息。钥匙是免费的。
片段
function detect_location($ip=NULL, $asArray=FALSE) {
if (empty($ip)) {
if (!empty($_SERVER['HTTP_CLIENT_IP'])) { $ip = $_SERVER['HTTP_CLIENT_IP']; }
elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip = $_SERVER['HTTP_X_FORWARDED_FOR']; }
else { $ip = $_SERVER['REMOTE_ADDR']; }
}
elseif (!is_string($ip) || strlen($ip) < 1 || $ip == '127.0.0.1' || $ip == 'localhost') {
$ip = '8.8.8.8';
}
$url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);
$i = 0; $content; $curl_info;
while (empty($content) && $i < 5) {
$ch = curl_init();
$curl_opt = array(
CURLOPT_FOLLOWLOCATION => 1,
CURLOPT_HEADER => 0,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_URL => $url,
CURLOPT_TIMEOUT => 1,
CURLOPT_REFERER => 'http://' . $_SERVER['HTTP_HOST'],
);
if (isset($_SERVER['HTTP_USER_AGENT'])) $curl_opt[CURLOPT_USERAGENT] = $_SERVER['HTTP_USER_AGENT'];
curl_setopt_array($ch, $curl_opt);
$content = curl_exec($ch);
if (!is_null($curl_info)) $curl_info = curl_getinfo($ch);
curl_close($ch);
}
$araResp = array();
if (preg_match('{<li>City : ([^<]*)</li>}i', $content, $regs)) $araResp['city'] = trim($regs[1]);
if (preg_match('{<li>State/Province : ([^<]*)</li>}i', $content, $regs)) $araResp['state'] = trim($regs[1]);
if (preg_match('{<li>Country : ([^<]*)}i', $content, $regs)) $araResp['country'] = trim($regs[1]);
if (preg_match('{<li>Zip or postal code : ([^<]*)</li>}i', $content, $regs)) $araResp['zip'] = trim($regs[1]);
if (preg_match('{<li>Latitude : ([^<]*)</li>}i', $content, $regs)) $araResp['latitude'] = trim($regs[1]);
if (preg_match('{<li>Longitude : ([^<]*)</li>}i', $content, $regs)) $araResp['longitude'] = trim($regs[1]);
if (preg_match('{<li>Timezone : ([^<]*)</li>}i', $content, $regs)) $araResp['timezone'] = trim($regs[1]);
if (preg_match('{<li>Hostname : ([^<]*)</li>}i', $content, $regs)) $araResp['hostname'] = trim($regs[1]);
$strResp = ($araResp['city'] != '' && $araResp['state'] != '') ? ($araResp['city'] . ', ' . $araResp['state']) : 'UNKNOWN';
return $asArray ? $araResp : $strResp;
}
要使用
detect_location();
// returns "CITY, STATE" based on user IP
detect_location('xxx.xxx.xxx.xxx');
// returns "CITY, STATE" based on IP you provide
detect_location(NULL, TRUE); // based on user IP
// returns array(8) { ["city"] => "CITY", ["state"] => "STATE", ["country"] => "US", ["zip"] => "xxxxx", ["latitude"] => "xx.xxxxxx", ["longitude"] => "-xx.xxxxxx", ["timezone"] => "-07:00", ["hostname"] => "xx-xx-xx-xx.host.name.net" }
detect_location('xxx.xxx.xxx.xxx', TRUE); // based on IP you provide
// returns array(8) { ["city"] => "CITY", ["state"] => "STATE", ["country"] => "US", ["zip"] => "xxxxx", ["latitude"] => "xx.xxxxxx", ["longitude"] => "-xx.xxxxxx", ["timezone"] => "-07:00", ["hostname"] => "xx-xx-xx-xx.host.name.net" }
ip-api.com 的另一个例子：
呼叫.php
<?php
$ip = $_REQUEST['REMOTE_ADDR']; // the IP address to query
$query = @unserialize(file_get_contents('http://ip-api.com/php/'.$ip));
if($query && $query['status'] == 'success') {
echo 'Hello visitor from '.$query['country'].', '.$query['city'].'!';
} else {
echo 'Unable to get location';
}
?>
和类.php：
<?php
class IPAPI {
static $fields = 65535; // refer to http://ip-api.com/docs/api:returned_values#field_generator
static $use_xcache = true; // set this to false unless you have XCache installed (http://xcache.lighttpd.net/)
static $api = "http://ip-api.com/php/";
public $status, $country, $countryCode, $region, $regionName, $city, $zip, $lat, $lon, $timezone, $isp, $org, $as, $reverse, $query, $message;
public static function query($q) {
$data = self::communicate($q);
$result = new static;
foreach($data as $key => $val) {
$result->$key = $val;
}
return $result;
}
private function communicate($q) {
$q_hash = md5('ipapi'.$q);
if(self::$use_xcache && xcache_isset($q_hash)) {
return xcache_get($q_hash);
}
if(is_callable('curl_init')) {
$c = curl_init();
curl_setopt($c, CURLOPT_URL, self::$api.$q.'?fields='.self::$fields);
curl_setopt($c, CURLOPT_HEADER, false);
curl_setopt($c, CURLOPT_TIMEOUT, 30);
curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
$result_array = unserialize(curl_exec($c));
curl_close($c);
} else {
$result_array = unserialize(file_get_contents(self::$api.$q.'?fields='.self::$fields));
}
if(self::$use_xcache) {
xcache_set($q_hash, $result_array, 86400);
}
return $result_array;
}
}
// example
$query = IPAPI::query("google.com");
echo 'Country: '.$query->country.', city: '.$query->city;
echo '<br><br>debug: <pre>';
var_dump($query);
echo '</pre>';
?>