CODEWITHSUNDEEP
phporientationexif
Jeff Thomas
Jeff Thomas

Reputation: 4816

PHP read_exif_data and Adjust Orientation

I am using the following code to rotate an uploaded jpeg image if the orientation is off. I am only having problems with images uploaded from iPhones and 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';
        }

Am I doing something wrong with the way I am reading the EXIF data from the jpeg? It is not rotating the images as it is supposed to.

This is what happens when I run a 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) }

Upvotes: 88

Views: 114828

Answers (13)

jo66
jo66

Reputation: 99

I think the best answer should be updated to take into account all possible exif orientation values (from 1 to 8):

function resample($jpgFile, $thumbFile, $width, $orientation) {
    // Get new dimensions
    list($width_orig, $height_orig) = getimagesize($jpgFile);
    $height = (int) (($width / $width_orig) * $height_orig);
    // Resample
    $image_p = imagecreatetruecolor($width, $height);
    $image   = imagecreatefromjpeg($jpgFile);
    imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
    // Fix Orientation
    switch($orientation) {
        case 3:
        case 4:
            $image_p = imagerotate($image_p, 180, 0);
            break;
        case 5:
        case 6:
            $image_p = imagerotate($image_p, 90, 0);
            break;
        case 7:
        case 8:
            $image_p = imagerotate($image_p, -90, 0);
            break;
    }
    // Output
    imagejpeg($image_p, $thumbFile, 90);
}

More information here.

Note that the image should be flipped for the following exif values: 2, 4, 6, and 8.

Upvotes: 2

Damien
Damien

Reputation: 1528

Intervention Image has a method orientate():

$img = Image::make('foo.jpg')->orientate();

This method reads the EXIF image profile setting 'Orientation' and performs a rotation on the image to display the image correctly.

Upvotes: -1

Daniel Bleisteiner
Daniel Bleisteiner

Reputation: 3310

The documentation for imagerotate refers to a different type for the first parameter than you use:

An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().

Here is a small example for using this function:

function resample($jpgFile, $thumbFile, $width, $orientation) {
    // Get new dimensions
    list($width_orig, $height_orig) = getimagesize($jpgFile);
    $height = (int) (($width / $width_orig) * $height_orig);
    // Resample
    $image_p = imagecreatetruecolor($width, $height);
    $image   = imagecreatefromjpeg($jpgFile);
    imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
    // Fix Orientation
    switch($orientation) {
        case 3:
            $image_p = imagerotate($image_p, 180, 0);
            break;
        case 6:
            $image_p = imagerotate($image_p, 90, 0);
            break;
        case 8:
            $image_p = imagerotate($image_p, -90, 0);
            break;
    }
    // Output
    imagejpeg($image_p, $thumbFile, 90);
}

Upvotes: 64

user462990
user462990

Reputation: 5532

Simpler function for those uploading an image, it just autorotates if necessary.

function image_fix_orientation($filename) {
    $exif = exif_read_data($filename);
    if (!empty($exif['Orientation'])) {
        $image = imagecreatefromjpeg($filename);
        switch ($exif['Orientation']) {
            case 3:
                $image = imagerotate($image, 180, 0);
                break;

            case 6:
                $image = imagerotate($image, 90, 0);
                break;

            case 8:
                $image = imagerotate($image, -90, 0);
                break;
        }

        imagejpeg($image, $filename, 90);
    }
}

Upvotes: 48

Jonathan
Jonathan

Reputation: 6732

Based on Daniel's code I wrote a function that simply rotates an image if necessary, without resampling.

GD

function image_fix_orientation(&$image, $filename) {
    $exif = exif_read_data($filename);
    
    if (!empty($exif['Orientation'])) {
        switch ($exif['Orientation']) {
            case 3:
                $image = imagerotate($image, 180, 0);
                break;
            
            case 6:
                $image = imagerotate($image, 90, 0);
                break;
            
            case 8:
                $image = imagerotate($image, -90, 0);
                break;
        }
    }
}

One line version (GD)

function image_fix_orientation(&$image, $filename) {
    $image = imagerotate($image, array_values([0, 0, 0, 180, 0, 0, -90, 0, 90])[@exif_read_data($filename)['Orientation'] ?: 0], 0);
}

ImageMagick

function image_fix_orientation($image) {
    if (method_exists($image, 'getImageProperty')) {
        $orientation = $image->getImageProperty('exif:Orientation');
    } else {
        $filename = $image->getImageFilename();
        
        if (empty($filename)) {
            $filename = 'data://image/jpeg;base64,' . base64_encode($image->getImageBlob());
        }
        
        $exif = exif_read_data($filename);
        $orientation = isset($exif['Orientation']) ? $exif['Orientation'] : null;
    }
    
    if (!empty($orientation)) {
        switch ($orientation) {
            case 3:
                $image->rotateImage('#000000', 180);
                break;
            
            case 6:
                $image->rotateImage('#000000', 90);
                break;
            
            case 8:
                $image->rotateImage('#000000', -90);
                break;
        }
    }
}

Upvotes: 87

Sebastian Viereck
Sebastian Viereck

Reputation: 5877

Here is my PHP 7 function inspired by @user462990:

/**
 * @param string $filePath
 *
 * @return resource|null
 */
function rotateImageByExifOrientation(string $filePath)
{
    $result = null;

    $exif = exif_read_data($filePath);
    if (!empty($exif['Orientation'])) {
        $image = imagecreatefromjpeg($filePath);
        if (is_resource($image)) {
            switch ($exif['Orientation']) {
                case 3:
                    $result = imagerotate($image, 180, 0);
                    break;

                case 6:
                    $result = imagerotate($image, -90, 0);
                    break;

                case 8:
                    $result = imagerotate($image, 90, 0);
                    break;
            }
        }
    }

    return $result;
}

usage:

    $rotatedFile = rotateImageByExifOrientation($absoluteFilePath);
    if (is_resource($rotatedFile)) {
        imagejpeg($rotatedFile, $absoluteFilePath, 100);
    }

Upvotes: 2

c0ld
c0ld

Reputation: 41

I've also used orientate() form Intervention, and it works flawlessly.

    $image_resize = Image::make($request->file('photo'));
    $image_resize->resize(1600, null,function ($constraint)
    {
        $constraint->aspectRatio();
    });
    $filename = $this->checkFilename();

    $image_resize->orientate()->save($this->photo_path.$filename,80);

Upvotes: 1

David Vielhuber
David Vielhuber

Reputation: 3559

Why is nobody considering mirrored cases 2,4,5,7? There are 4 more cases in exif orientation land:

enter image description here

Here is a complete solution taking a filename:

function __image_orientate($source, $quality = 90, $destination = null)
{
    if ($destination === null) {
        $destination = $source;
    }
    $info = getimagesize($source);
    if ($info['mime'] === 'image/jpeg') {
        $exif = exif_read_data($source);
        if (!empty($exif['Orientation']) && in_array($exif['Orientation'], [2, 3, 4, 5, 6, 7, 8])) {
            $image = imagecreatefromjpeg($source);
            if (in_array($exif['Orientation'], [3, 4])) {
                $image = imagerotate($image, 180, 0);
            }
            if (in_array($exif['Orientation'], [5, 6])) {
                $image = imagerotate($image, -90, 0);
            }
            if (in_array($exif['Orientation'], [7, 8])) {
                $image = imagerotate($image, 90, 0);
            }
            if (in_array($exif['Orientation'], [2, 5, 7, 4])) {
                imageflip($image, IMG_FLIP_HORIZONTAL);
            }
            imagejpeg($image, $destination, $quality);
        }
    }
    return true;
}

Upvotes: 30

G.P.W.
G.P.W.

Reputation: 11

jhead -autorot jpegfile.jpg

Is also a useful way to approach this.

jhead is a standard program in Linux (use 'sudo apt-get install jhead' to install), this option looks at the orientation and rotates the image correctly and losslessly only if it requires. It then also updates the EXIF data correctly.

In this way you can process a jpeg (or multiple jpegs in a folder) in a simple one-pass way that fixes rotation issues permanently.

E.g: jhead -autorot *.jpg will fix a whole folder of jpeg images in just the manner the OP requires in the initial question.

While it's not technically PHP I did read this thread and then used my jhead suggestion instead, called from a PHP system() call to achieve the results I was after which were coincident with the OPs: to rotate images so any software (like 'fbi' in Raspbian) could display them correctly.

In light of this I thought others may benefit from knowing how easily jhead solves this problem and posted the information here only for informative purposes - because no one had mentioned it previously.

Upvotes: 1

MD. ABU TALHA
MD. ABU TALHA

Reputation: 713

Here I'am explaining the whole thing, I use Laravel and use the Image Intervention Package.

First of all, I get my image and send it to my another function for resizing and some other functionality, if we do not need this, you can skip...

Grab the file with a method in my controller,

 public  function getImageFile(Request $request){
    $image = $request->image;
    $this->imageUpload($image);
}

Now, I send it to resize and getting the image name and extension...

public function  imageUpload($file){
    ini_set('memory_limit', '-1');
    $directory = 'uploads/';
    $name = str_replace([" ", "."], "_", $file->getClientOriginalName()) . "_";
    $file_name = $name . time() . rand(1111, 9999) . '.' . $file->getClientOriginalExtension();
    //path set
    $img_url = $directory.$file_name;
    list($width, $height) = getimagesize($file);
    $h = ($height/$width)*600;
    Image::make($file)->resize(600, $h)->save(public_path($img_url));
    $this->image_fix_orientation($file,$img_url);
    return $img_url;
}

Now I call my image orientation function,

 public function image_fix_orientation($file,$img_url ) {
    $data = Image::make($file)->exif();
    if (!empty($data['Orientation'])) {
        $image = imagecreatefromjpeg($file);
        switch ($data['Orientation']) {
            case 3:
                $image = imagerotate($image, 180, 0);
                break;

            case 6:
                $image = imagerotate($image, -90, 0);
                break;

            case 8:
                $image = imagerotate($image, 90, 0);
                break;
        }

        imagejpeg($image, $img_url, 90);
    }

}

And That's all...

Upvotes: 2

Brad Root
Brad Root

Reputation: 515

I hate to chime in with yet another set of orientation values, but in my experience using any of the values listed above, I always ended up with upside down images when uploading portrait orientation shots directly from an iPhone. Here's the switch statement I ended up with.

switch ($exif['Orientation']) {
        case 3:
            $image = imagerotate($image, -180, 0);
            break;

        case 6:
            $image = imagerotate($image, -90, 0);
            break;

        case 8:
            $image = imagerotate($image, 90, 0);
            break;
    }

Upvotes: 3

Cat
Cat

Reputation: 396

It's probably worthwhile to mention that if you are using ImageMagick from command line, you can use the -auto-orient option which will auto rotate the image based on the existing EXIF orientation data.

convert -auto-orient /tmp/uploadedImage.jpg /save/to/path/image.jpg

Please note: If the EXIF data was stripped before the process, it will not work as described.

Upvotes: 6

mr_crazy_pants
mr_crazy_pants

Reputation: 121

Just in case someone comes across this. From what I can make out some of the switch statements above are wrong.

Based on information here, it should be:

switch ($exif['Orientation']) {
    case 3:
        $image = imagerotate($image, -180, 0);
        break;
    case 6:
        $image = imagerotate($image, 90, 0);
        break;
    case 8:
        $image = imagerotate($image, -90, 0);
        break;
}

Upvotes: 9

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