Auto-rotate image based on EXIF data

EXIFRotate.php

const EXIF_ROTATION_0 = 1;
const EXIF_MIRROR_0 = 2;
const EXIF_ROTATION_90 = 6;
const EXIF_MIRROR_90 = 5;
const EXIF_ROTATION_180 = 3;
const EXIF_MIRROR_180 = 4;
const EXIF_ROTATION_270 = 8;
const EXIF_MIRROR_270 = 7;

const GIF_TYPE = 1;
const JPG_TYPE = 2;
const PNG_TYPE = 3;

public static function adjustImageOrientation($filename, $quality = 90)
{
    try {
        $exif = @exif_read_data($filename);
    } catch (\Exception $e) {
        $exif = false;
    }

    // If no exif info, or no orientation info, or if orientation needs no adjustment
    $orientation = array_get($exif, 'Orientation');
    if (!$orientation || $orientation === self::EXIF_ROTATION_0) {
        return false;
    }

    switch ($fileType = @exif_imagetype($filename)) {
        case self::GIF_TYPE: // gif
            $img = @imageCreateFromGif($filename);
            break;
        case self::JPG_TYPE: // jpg
            $img = @imageCreateFromJpeg($filename);
            break;
        case self::PNG_TYPE: // png
            $img = @imageCreateFromPng($filename);
            break;
        default:
            $img = @imagecreatefromjpeg($filename);
    }

    if (!$img) {
        return false;
    }

    $mirror = in_array($orientation, [self::EXIF_MIRROR_0, self::EXIF_MIRROR_90, self::EXIF_MIRROR_180, self::EXIF_MIRROR_270]);
    $deg = 0;
    switch ($orientation) {
        case self::EXIF_ROTATION_180:
        case self::EXIF_MIRROR_180:
            $deg = 180;
            break;
        case self::EXIF_ROTATION_90:
        case self::EXIF_MIRROR_90:
            $deg = 270;
            break;
        case self::EXIF_ROTATION_270:
        case self::EXIF_MIRROR_270:
            $deg = 90;
            break;
    }

    if ($deg) {
        $img = imagerotate($img, $deg, 0);
    }

    if ($mirror) {
        $img = imageflip($img, IMG_FLIP_HORIZONTAL);
    }

    switch ($fileType = @exif_imagetype($filename)) {
        case self::GIF_TYPE: // gif
            imagegif($img, $filename);
            break;
        case self::JPG_TYPE: // jpg
            imagejpeg($img, $filename, $quality);
            break;
        case self::PNG_TYPE: // png
            imagepng($img, $filename, $quality);
            break;
        default:
            imagejpeg($img, $filename, $quality);
    }

    return true;
}