Php obtains coordinates transmitted from the header of ios or android, obtains the specific city and address through the Baidu interface, and saves them to the session .,

Php obtains coordinates transmitted from the header of ios or android, obtains the specific city and address through the Baidu interface, and saves them to the session .,

First, encapsulate a method to obtain the header file in the function. php method file.

If (! Function_exists ('getallheaders ')){
Function getallheaders (){
$ Headers = array ();
Foreach ($ _ SERVER as $ name => $ value ){
If (substr ($ name, 0, 5) = 'HTTP _'){
$ Headers [str_replace ('', '-', ucwords (strtolower (str_replace ('_','', substr ($ name, 5)] = $ value;
}
}
Return $ headers;
}
}

Then, call this method in the corresponding controller to obtain data. First, check whether there is any location information in the session.

If (! $ _ SESSION ['mylocation'])
{
// Obtain the positioning Coordinate
$ Location = getallheaders ();
$ This-> get_location ($ location); // call the encapsulated Method
}

Finally, encapsulate a method to request the Baidu interface to return specific location information and coexist in the session.

Public function get_location ($ location)
{
$ Lat = $ location ['latitude '];
$ Lng = $ location ['longyun'];

If ($ lat & $ lng)
{
$ Url = 'HTTP: // api.map.baidu.com/geocoder/v2 /? Ak = 5BFNbSgnVF5g2O72NpvTDxFm & location = '. $ lat.', '. $ lng.' & output = json & pois = 1 ';
$ Html = json_decode (file_get_contents ($ url), true );

If ($ html)
{
$ MyLocation = array (
'City' => $ html ['result'] ['address'] ['city'],
'Addr '=> isset ($ html ['result'] ['address'] ['street'])? $ Html ['result'] ['address'] ['street']: $ html ['result'] ['formatted _ address'],
'Lng '=> $ html ['result'] ['location'] ['lng'],
'Lat' => $ html ['result'] ['location'] ['lat'],
);

$ _ SESSION ['mylocation'] = $ MyLocation;
}
}
}