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    Imagick::getImageResolution

    (PECL imagick 2, PECL imagick 3)

    Imagick::getImageResolution — Lit les résolutions en X et Y d'une image

    Description

    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

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    6
    christian at cvj dot se
    10 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:

    <?php
    $resource     = new Imagick($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);
    }

    ?>
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    3
    Simon Epskamp
    11 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: http://www.php.net/manual/en/imagick.getimagegeometry.php

    See http://www.imagemagick.org/Usage/basics/#density for more infomation on the difference.
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    1
    perching_eagle at yahoo dot com
    17 years ago
    //location of image: c:/htdocs/rose.jpg
    $path="c:/htdocs/";
    $image=new Imagick($path."rose.jpg");
    $array=$image->getImageResolution();
    print_r($array);

    result:
    Array
    (
        [x]=>75
        [y]=>75
    )
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    0
    Shawn Pyle
    13 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 http://www.imagemagick.org
    Copyright: Copyright (C) 1999-2011 ImageMagick Studio LLC
    Features: OpenMP OpenCL

    desktop:~$ pecl list
    Installed packages, channel pecl.php.net:
    ==========================
    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
    up
    -9
    Alex
    11 years ago
    Here is simple code snippet to get image DPI:
    <?php
    $img     = new imagick( 'file.jpg' );
    print_r($img->getImageResolution()); // Array ( [x] => 72 [y] => 72 )

    ?>
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