Classes/Utility/ImageUtility.php
public static function getOrientation($fileName)
    {
        $orientation = 1; // Fallback to "straight"
        $metadata = static::getMetadata($fileName);
        if (isset($metadata['Orientation'])) {
            $orientation = $metadata['Orientation'];
        }
        return $orientation;
    }
public static function getOrientation($fileName)
    {
        $orientation = 1; // Fallback to "straight"
        $metadata = static::getMetadata($fileName);
        if (isset($metadata['Orientation'])) {
            $orientation = $metadata['Orientation'];
        }
        return $orientation;
    }
Returns the EXIF orientation of a given picture.

@param string $fileName
@return integer