PHP 5.4.31 Released

Imagick::getImageResolution

(PECL imagick 2.0.0)

Imagick::getImageResolutionObtiene la resolución X e Y de la imagen

Descripción

array Imagick::getImageResolution ( void )

Obtiene la resolución X e Y de la imagen.

Valores devueltos

Devuelve la resolución como un array.

Errores/Excepciones

Lanza ImagickException en caso de error.

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User Contributed Notes 5 notes

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christian at cvj dot se
5 months 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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Alex
10 months 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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0
Simon Epskamp
10 months 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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0
Shawn Pyle
3 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
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perching_eagle at yahoo dot com
6 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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