Geo Loacation

[FrankM]

In den exif Daten können sich die GPS Daten des Standortes verstecken. Die wollen wir haben

 <?php
   
  //Test ob in der Datei GPS Daten drin sind   
  $img = '../upload/IMG_20181117_104123_ergebnis_34.jpg'; //or $fileName='xxxxxxxxx';
  $test = exif_read_data($img, 0, true);
  var_dump($test);
 
 echo "<br>";
 echo "<br>";
 
  $img = '../upload/IMG_20181206_153916.jpg'; //or $fileName='xxxxxxxxx';
  $test = exif_read_data($img, 0, true);
  var_dump($test);
 
       
  /**
  * get_image_location
  * Returns an array of latitude and longitude from the Image file
  * @param $image file path
  * @return multitype:array|boolean
  */
 function get_image_location($image = ''){
     $exif = exif_read_data($image, 0, true);
     if($exif && isset($exif['GPS'])){
         $GPSLatitudeRef = $exif['GPS']['GPSLatitudeRef'];
         $GPSLatitude    = $exif['GPS']['GPSLatitude'];
         $GPSLongitudeRef= $exif['GPS']['GPSLongitudeRef'];
         $GPSLongitude   = $exif['GPS']['GPSLongitude'];
         
         $lat_degrees = count($GPSLatitude) > 0 ? gps2Num($GPSLatitude[0]) : 0;
         $lat_minutes = count($GPSLatitude) > 1 ? gps2Num($GPSLatitude[1]) : 0;
         $lat_seconds = count($GPSLatitude) > 2 ? gps2Num($GPSLatitude[2]) : 0;
         
         $lon_degrees = count($GPSLongitude) > 0 ? gps2Num($GPSLongitude[0]) : 0;
         $lon_minutes = count($GPSLongitude) > 1 ? gps2Num($GPSLongitude[1]) : 0;
         $lon_seconds = count($GPSLongitude) > 2 ? gps2Num($GPSLongitude[2]) : 0;
         
         $lat_direction = ($GPSLatitudeRef == 'W' or $GPSLatitudeRef == 'S') ? -1 : 1;
         $lon_direction = ($GPSLongitudeRef == 'W' or $GPSLongitudeRef == 'S') ? -1 : 1;
         
         $latitude = $lat_direction * ($lat_degrees + ($lat_minutes / 60) + ($lat_seconds / (60*60)));
         $longitude = $lon_direction * ($lon_degrees + ($lon_minutes / 60) + ($lon_seconds / (60*60)));
 
         return array('latitude'=>$latitude, 'longitude'=>$longitude);
     }else{
         return false;
     }
 }
 
 function gps2Num($coordPart){
     $parts = explode('/', $coordPart);
     if(count($parts) <= 0)
     return 0;
     if(count($parts) == 1)
     return $parts[0];
     return floatval($parts[0]) / floatval($parts[1]);
 }
 
 
 $imageURL = "../upload/IMG_20181117_104123_ergebnis_34.jpg";
 //$imageURL = "../upload/IMG_20181201_081430.jpg";
 
 //get location of image
 $imgLocation = get_image_location($imageURL);
 var_dump($imgLocation);

//Fehlerbehandlung
 if ($imgLocation == false) {
     echo "ERROR";
 }

 //Ausgabe
 //latitude & longitude
 $imgLat = $imgLocation['latitude'];
 $imgLng = $imgLocation['longitude'];
 echo "<br>";
 echo $imgLat . "<br>";
 echo $imgLng;

Muss noch optimiert werden!

Quelle: https://www.codexworld.com/get-geolocation-latitude-longitude-from-image-php/