(PECL imagick 2, PECL imagick 3)

Imagick::getImageResolutionLit les résolutions en X et Y d'une image


public Imagick::getImageResolution(): array

Lit les résolutions en X et Y d'une image.

Liste de paramètres

Cette fonction ne contient aucun paramètre.

Valeurs de retour

Lit les résolutions en X et Y d'une image.

Erreurs / Exceptions

Lance une exception ImagickException si une erreur survient.

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User Contributed Notes 5 notes

christian at cvj dot se
8 years ago
For me getImageResolution() always returns X and Y resolution in pixels per centimeter, no matter if I set it with setImageUnits() or not.

So an easy way to convert the result from pixels per centimeter to pixels per inch is to do this:

= new Imagick($path);
$imageResolution = $resource->getImageResolution();

if (!empty(
$imageResolution['y'])) {
$imageResolution['y'] =
round($imageResolution['y'] * 2.54, 2);

if (!empty(
$imageResolution['x'])) {
$imageResolution['x'] =
round($imageResolution['x'] * 2.54, 2);

Simon Epskamp
9 years ago
Please note that this method seems to return the image density, or DPI, not it's output resolution. If you want the output resolution, please refer to Imagick::getImageGeometry:

See for more infomation on the difference.
perching_eagle at yahoo dot com
14 years ago
//location of image: c:/htdocs/rose.jpg
$image=new Imagick($path."rose.jpg");

Shawn Pyle
11 years ago
As of the following versions, the results of this function returns the x and y resolution as floats.

desktop:~$ convert --version
Version: ImageMagick 6.6.9-1 2011-04-14 Q8
Copyright: Copyright (C) 1999-2011 ImageMagick Studio LLC
Features: OpenMP OpenCL

desktop:~$ pecl list
Installed packages, channel
Package Version State
imagick 3.0.1   stable

desktop:~$ php --version
PHP 5.3.5 (cli) (built: Mar  1 2011 12:57:53)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
    with Xdebug v2.1.0, Copyright (c) 2002-2010, by Derick Rethans
8 years ago
Here is simple code snippet to get image DPI:
= new imagick( 'file.jpg' );
print_r($img->getImageResolution()); // Array ( [x] => 72 [y] => 72 )

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