Tôi đang sử dụng mã sau để xoay hình ảnh jpeg đã tải lên nếu hướng bị tắt. Tôi chỉ gặp sự cố với hình ảnh được tải lên từ iPhone và Android.
if(move_uploaded_file($_FILES['photo']['tmp_name'], $upload_path . $newfilename)){
chmod($upload_path . $newfilename, 0755);
$exif = exif_read_data($upload_path . $newfilename);
$ort = $exif['IFD0']['Orientation'];
switch($ort)
{
case 3: // 180 rotate left
$image->imagerotate($upload_path . $newfilename, 180, -1);
break;
case 6: // 90 rotate right
$image->imagerotate($upload_path . $newfilename, -90, -1);
break;
case 8: // 90 rotate left
$image->imagerotate($upload_path . $newfilename, 90, -1);
break;
}
imagejpeg($image, $upload_path . $newfilename, 100);
$success_message = 'Photo Successfully Uploaded';
}else{
$error_count++;
$error_message = 'Error: Upload Unsuccessful<br />Please Try Again';
}
Tôi có đang làm gì đó sai với cách đọc dữ liệu EXIF từ jpeg không? Nó không xoay các hình ảnh như nó được cho là.
Đây là những gì sẽ xảy ra khi tôi chạy var_dump ($ exif);
array(41) {
["FileName"]=> string(36) "126e7c0efcac2b76b3320e6187d03cfd.JPG"
["FileDateTime"]=> int(1316545667)
["FileSize"]=> int(1312472)
["FileType"]=> int(2)
["MimeType"]=> string(10) "image/jpeg"
["SectionsFound"]=> string(30) "ANY_TAG, IFD0, THUMBNAIL, EXIF"
["COMPUTED"]=> array(8) {
["html"]=> string(26) "width="2048" height="1536""
["Height"]=> int(1536)
["Width"]=> int(2048)
["IsColor"]=> int(1)
["ByteOrderMotorola"]=> int(1)
["ApertureFNumber"]=> string(5) "f/2.8"
["Thumbnail.FileType"]=> int(2)
["Thumbnail.MimeType"]=> string(10) "image/jpeg" }
["Make"]=> string(5) "Apple"
["Model"]=> string(10) "iPhone 3GS"
["Orientation"]=> int(6)
["XResolution"]=> string(4) "72/1"
["YResolution"]=> string(4) "72/1" ["ResolutionUnit"]=> int(2) ["Software"]=> string(5) "4.3.5" ["DateTime"]=> string(19) "2011:09:16 21:18:46" ["YCbCrPositioning"]=> int(1) ["Exif_IFD_Pointer"]=> int(194) ["THUMBNAIL"]=> array(6) { ["Compression"]=> int(6) ["XResolution"]=> string(4) "72/1" ["YResolution"]=> string(4) "72/1" ["ResolutionUnit"]=> int(2) ["JPEGInterchangeFormat"]=> int(658) ["JPEGInterchangeFormatLength"]=> int(8231) } ["ExposureTime"]=> string(4) "1/15" ["FNumber"]=> string(4) "14/5" ["ExposureProgram"]=> int(2) ["ISOSpeedRatings"]=> int(200) ["ExifVersion"]=> string(4) "0221" ["DateTimeOriginal"]=> string(19) "2011:09:16 21:18:46" ["DateTimeDigitized"]=> string(19) "2011:09:16 21:18:46" ["ComponentsConfiguration"]=> string(4) "" ["ShutterSpeedValue"]=> string(8) "3711/949" ["ApertureValue"]=> string(9) "4281/1441" ["MeteringMode"]=> int(1) ["Flash"]=> int(32) ["FocalLength"]=> string(5) "77/20" ["SubjectLocation"]=> array(4) { [0]=> int(1023) [1]=> int(767) [2]=> int(614) [3]=> int(614) } ["FlashPixVersion"]=> string(4) "0100" ["ColorSpace"]=> int(1) ["ExifImageWidth"]=> int(2048) ["ExifImageLength"]=> int(1536) ["SensingMethod"]=> int(2) ["ExposureMode"]=> int(0) ["WhiteBalance"]=> int(0) ["SceneCaptureType"]=> int(0) ["Sharpness"]=> int(1) }