PHP上传图像与正确的方向- imagerotate不工作的iPhone

我创建了一个web应用程序，用户可以在其中上传他们的个人资料照片。如果用户用手机的摄像头拍摄图像，方向就会改变。我设法解决它使用以下代码:

                 $path[0] = $_FILES['image_upload_file']['tmp_name'];
                 $exif = exif_read_data($path[0]);
                 // $exif['Orientation'] = 6;
                 if(isset($exif['Orientation'])){
                    $image = imagecreatefromjpeg($path[0]);
                    file_put_contents("img_data.txt",print_r($image,true));
                    $ort = $exif['Orientation'];
                    switch($ort)
                    {
                        case 3: // 180 rotate left
                            $image = imagerotate($image, 180,0);
                            break;

                        case 6: // 90 rotate right
                             file_put_contents("img_before.txt",print_r($exif,true));
                            $image = imagerotate($image, -90, 0);
                             file_put_contents("img_after.txt",print_r($ort,true));
                            break;
                        case 8:    // 90 rotate left
                            $image = imagerotate($image, 90, 0);
                            break;
                    }
                    imagejpeg($image, $path[0], 90);
                }

从PHP中读取此代码read_exif_data和调整方向

然而，它只适用于从Android设备或从计算机捕获图像。如果图像是从iPhone设备捕获的，则不起作用。

在调试时，我注意到$image = imagerotate($image, -90, 0);与iphone有一些问题。我可以肯定地说，因为这一行没有执行(因为img_after.txt没有在应该创建的地方创建)。

file_put_contents("img_after.txt",print_r($ort,true));

请建议!

exif data read from iPhone:

Array
(
    [FileName] => phpYBaC5W
    [FileDateTime] => 1467207697
    [FileSize] => 1430214
    [FileType] => 2
    [MimeType] => image/jpeg
    [SectionsFound] => ANY_TAG, IFD0, EXIF
    [COMPUTED] => Array
        (
            [html] => width="3264" height="2448"
            [Height] => 2448
            [Width] => 3264
            [IsColor] => 1
            [ByteOrderMotorola] => 1
        )
    [Orientation] => 6
    [Exif_IFD_Pointer] => 38
    [ColorSpace] => 1
    [ExifImageWidth] => 3264
    [ExifImageLength] => 2448
)

exif data read from Android

Array
(
    [FileName] => phpMQHUgW
    [FileDateTime] => 1467207789
    [FileSize] => 1842753
    [FileType] => 2
    [MimeType] => image/jpeg
    [SectionsFound] => ANY_TAG, IFD0, THUMBNAIL, EXIF, GPS, INTEROP
    [COMPUTED] => Array
        (
            [html] => width="3264" height="1836"
            [Height] => 1836
            [Width] => 3264
            [IsColor] => 1
            [ByteOrderMotorola] => 0
            [ApertureFNumber] => f/2.4
            [Thumbnail.FileType] => 2
            [Thumbnail.MimeType] => image/jpeg
            [Thumbnail.Height] => 288
            [Thumbnail.Width] => 512
        )
    [ImageWidth] => 3264
    [ImageLength] => 1836
    [Make] => SAMSUNG
    [Model] => SM-G7102
    [Orientation] => 6
    [XResolution] => 72/1
    [YResolution] => 72/1
    [ResolutionUnit] => 2
    [Software] => G7102DDUBOB1
    [DateTime] => 2016:06:29 19:12:59
    [YCbCrPositioning] => 1
    [Exif_IFD_Pointer] => 238
    [GPS_IFD_Pointer] => 870
    [THUMBNAIL] => Array
        (
            [ImageWidth] => 512
            [ImageLength] => 288
            [Compression] => 6
            [Orientation] => 6
            [XResolution] => 72/1
            [YResolution] => 72/1
            [ResolutionUnit] => 2
            [JPEGInterchangeFormat] => 1018
            [JPEGInterchangeFormatLength] => 5829
        )
    [ExposureTime] => 1/17
    [FNumber] => 240/100
    [ExposureProgram] => 2
    [ISOSpeedRatings] => 1000
    [ExifVersion] => 0220
    [DateTimeOriginal] => 2016:06:29 19:12:59
    [DateTimeDigitized] => 2016:06:29 19:12:59
    [ComponentsConfiguration] =>  
    [ShutterSpeedValue] => 405/100
    [ApertureValue] => 252/100
    [BrightnessValue] => -169/100
    [ExposureBiasValue] => 0/10
    [MaxApertureValue] => 253/100
    [MeteringMode] => 2
    [LightSource] => 0
    [Flash] => 0
    [FocalLength] => 293/100
    [MakerNote] =>       0100                      Z   @         P                             
    [FlashPixVersion] => 0100
    [ColorSpace] => 1
    [ExifImageWidth] => 3264
    [ExifImageLength] => 1836
    [InteroperabilityOffset] => 840
    [SensingMethod] => 2
    [SceneType] => 
    [ExposureMode] => 0
    [WhiteBalance] => 0
    [FocalLengthIn35mmFilm] => 31
    [SceneCaptureType] => 0
    [ImageUniqueID] => E08QLGI01CH
    [GPSVersion] =>   
    [InterOperabilityIndex] => R98
    [InterOperabilityVersion] => 0100
)

如果我跳过旋转图像的代码，它在包括iphone在内的所有手机上都能正常工作。