Codeigniter谷歌地圖API

Question

我剛剛測試谷歌地圖API Codeigniter，但有一個我不明白的錯誤。 嚴重性：注意 消息：未定義的變量：地圖

的代碼是從這裏

http://biostall.com/demos/google-maps-v3-api-codeigniter-library/

Answer 1

if (isset($_GET["w1"]) && isset($_GET["w2"])) 
{ 
    $config['center'] = $lat = $_GET["w1"].','.$lng = $_GET["w2"]; 
    $marker = array();   
    $marker['position'] = $lat = $_GET["w1"].','.$lng = $_GET["w2"]; 
    $latlng = $_GET["w1"].','.$_GET["w2"]; 
    $request = file_get_contents('https://maps.googleapis.com/maps/api/geocode/json?address=.$latlng.&key=AIzaSyAOAR94QMB9YdE8RXHG-8NE28cz6wdUw2I'); 
    $json = json_decode($request, true);            
    $marker['infowindow_content'] = implode("|", $json); 
    $this->googlemaps->add_marker($marker);    
}