所以，这两天我一直在失去理智。我有一个基于 Drupal 7 的网站。
我遇到的问题是，当我的网站用户从 iPhone 或 iPad 上传图像（通过 ckeditor 和通过表单上传的帐户个人资料图像）时，图像最终被颠倒了。
当我注意到一个奇怪的问题时，我已经编写了独立的 php 来读取图像的 exif 数据并检测问题。当不在drupal中时，图像确实有exif信息，并且一旦上传到drupal，它们似乎就会丢失exif信息。
我使用此代码读取 exif 信息
$full_filename ='image.jpg';
$exif = exif_read_data($full_filename);
print "<pre>";
print_r($exif);
print "<pre>";
这是从未上传到 drupal 的图像中读取的结果
Array
(
[FileName] => image4.jpg
[FileDateTime] => 1372430458
[FileSize] => 1568098
[FileType] => 2
[MimeType] => image/jpeg
[SectionsFound] => ANY_TAG, IFD0, THUMBNAIL, EXIF
[COMPUTED] => Array
(
[html] => width="2592" height="1936"
[Height] => 1936
[Width] => 2592
[IsColor] => 1
[ByteOrderMotorola] => 1
[ApertureFNumber] => f/2.8
[Thumbnail.FileType] => 2
[Thumbnail.MimeType] => image/jpeg
)
[Make] => Apple
[Model] => iPhone 4
[Orientation] => 6
[XResolution] => 72/1
[YResolution] => 72/1
[ResolutionUnit] => 2
[Software] => 5.1.1
[DateTime] => 2013:06:28 09:18:53
[YCbCrPositioning] => 1
[Exif_IFD_Pointer] => 192
[THUMBNAIL] => Array
(
[Compression] => 6
[XResolution] => 72/1
[YResolution] => 72/1
[ResolutionUnit] => 2
[JPEGInterchangeFormat] => 676
[JPEGInterchangeFormatLength] => 8886
)
[ExposureTime] => 1/24
[FNumber] => 14/5
[ExposureProgram] => 2
[ISOSpeedRatings] => 80
[ExifVersion] => 0221
[DateTimeOriginal] => 2013:06:28 09:18:53
[DateTimeDigitized] => 2013:06:28 09:18:53
[ComponentsConfiguration] =>
[ShutterSpeedValue] => 21632/4717
[ApertureValue] => 4281/1441
[BrightnessValue] => 94810/26881
[MeteringMode] => 5
[Flash] => 24
[FocalLength] => 77/20
[SubjectLocation] => Array
(
[0] => 1295
[1] => 967
[2] => 699
[3] => 696
)
[FlashPixVersion] => 0100
[ColorSpace] => 1
[ExifImageWidth] => 2592
[ExifImageLength] => 1936
[SensingMethod] => 2
[ExposureMode] => 0
[WhiteBalance] => 0
[SceneCaptureType] => 0
[Sharpness] => 2
)
这是上传到drupal的图像中的信息
Array
(
[FileName] => image3.jpg
[FileDateTime] => 1372355645
[FileSize] => 75670
[FileType] => 2
[MimeType] => image/jpeg
[SectionsFound] => COMMENT
[COMPUTED] => Array
(
[html] => width="1024" height="765"
[Height] => 765
[Width] => 1024
[IsColor] => 1
)
[COMMENT] => Array
(
[0] => CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 75
)
)
有没有可能drupal与此有关。GD 工具包？
我尝试使用 imagecache autorotate 并旋转未从 iphone 上传的图像，但 ipad 或 iphone 没有运气。
我不确定如何开始。欢迎所有帮助。