examples/photomap/IPhoneImageDocument.php
public function getLatitude()
    {
        if (isset($this->exif)) {
            return (float)$this->getGps($this->exif['GPSLatitude'], $this->exif['GPSLatitudeRef']);
        } else {
            return null;
        }
    }
public function getLatitude()
    {
        if (isset($this->exif)) {
            return (float)$this->getGps($this->exif['GPSLatitude'], $this->exif['GPSLatitudeRef']);
        } else {
            return null;
        }
    }
Get the latitude metadata.

@return float The latitude as a single numeric value.