CODEWITHSUNDEEP
phpimageorientation
nimrod
nimrod

Reputation: 5742

Retrieve image orientation in PHP

How can I get the image orientation (landscape or portrait) of an image (JPEG or PNG) in PHP?

I created a php site where users can upload pictures. Before I scale them down to a smaller size, I want to know how the image is orientated in order to scale it properly.

Thanks for your answer!

Upvotes: 20

Views: 36411

Answers (7)

TV-C-1-5
TV-C-1-5

Reputation: 714

You may want to rotate the image relative to correct the exif data first - when using the 'getimagesize()' width/height check - as the width height may be reversed in some cases, depending on the camera or device used.

$rotate = false;
$exif = exif_read_data($source_image);

if($exif['Orientation'] == '6'){
  $degrees = 270;
  $rotate = true;
}
if($exif['Orientation'] == '8'){
   $degrees = 90;
   $rotate = true;
}
if($exif['Orientation'] == '3'){
   $degrees = 180;
   $rotate = true;
}
        
// Now rotate
if($rotate){
  $source_image_string = imagecreatefromjpeg($source_image) or die('Error opening file to rotate '.$source_image);
  $source_image_rotated = imagerotate($source_image_string, $degrees, 0) or die('Error rotating file '.$source_image);
  $rotated_image_saved = imagejpeg($source_image_rotated, $source_image) or die('Error saving rotated file '.$source_image);// Save Rotated
        }

        list($width, $height) = getimagesize($source_image);
        if ($width > $height) {
            // Landscape
        } else {
            // Portrait or Square
        }

Upvotes: 2

Tom F.
Tom F.

Reputation: 153

I am using this shorthand. Sharing just in case someone needs a one-line solution.

$orientation = ( $width != $height ? ( $width > $height ? 'landscape' : 'portrait' ) : 'square' );

First it checks if image is not 1:1 (square). If it is not it determines the orientation (landscape / portrait).

I hope someone finds this helpful.

Upvotes: 3

Paddyd
Paddyd

Reputation: 1870

list($width, $height) = getimagesize("path/to/your/image.jpg");

if( $width > $height)
    $orientation = "landscape";
else
    $orientation = "portrait";

Upvotes: 10

Jason
Jason

Reputation: 1220

I've always done this:

list($width, $height) = getimagesize('image.jpg');
if ($width > $height) {
    // Landscape
} else {
    // Portrait or Square
}

Upvotes: 57

palerdot
palerdot

Reputation: 7642

I use a generalized scaling down algorithm like . ..

   function calculateSize($width, $height){

            if($width <= maxSize && $height <= maxSize){
                $ratio = 1;
            } else if ($width > maxSize){
                $ratio = maxSize/$width;
                } else{
                    $ratio = maxSize/$height;
                    }

        $thumbwidth =  ($width * $ratio);
        $thumbheight = ($height * $ratio);
        }

Here max size is the one I initialized to something like 120px for both height and width . . . so that the thumbnail does not exceed that size . . ..

This Works for me which is irrespective of landscape or portrait orientation and can be applied generally

Upvotes: 0

ajtrichards
ajtrichards

Reputation: 30565

I suppose you could check if the Image width is longer than the length for Landscape and for Portrait if the Length is longer than width.

You can do that with a simple IF / ELSE statement.

You could also use the function: Imagick::getImageOrientation

http://php.net/manual/en/imagick.getimageorientation.php

Upvotes: 2

HackyStack
HackyStack

Reputation: 5157

Simple. Just check the width and height and compare them to get orientation. Then resize accordingly. Straight-forward really. If you are trying to maintain aspect ratio, but fit into some square box you could use something like this:

public static function fit_box($box = 200, $x = 100, $y = 100)
{
  $scale = min($box / $x, $box / $y, 1);
  return array(round($x * $scale, 0), round($y * $scale, 0));
}

Upvotes: 0

Related Questions