php教程

Imagick::setImageUnits

(PECL imagick 2.0.0)

Imagick::setImageUnitsSets the image units of resolution

说明

Imagick::setImageUnits ( int $units ) : bool

Sets the image units of resolution.

参数

units

返回值

成功时返回 TRUE

User Contributed Notes

euperia at gmail dot com 07-Nov-2012 08:20
You should use the PHP Imagick constants to correctly set the Image Units, as described here:

http://www.php.net/manual/en/imagick.constants.php

RESOLUTION constants

imagick::RESOLUTION_UNDEFINED (integer)
imagick::RESOLUTION_PIXELSPERINCH (integer)
imagick::RESOLUTION_PIXELSPERCENTIMETER (integer)
salomonsanz at gmail dot com 08-Dec-2008 12:56
$source = 'miphoto.jpg';
$imagick = new Imagick($source);
$imagick -> setImageUnits(2);
//0=undefined, 1=pixelsperInch, 2=PixelsPerCentimeter
$info = $imagick -> identifyImage();
print_r($info);
//ouput
/*
Array
(
[units] => PixelsPerCentimeter
)

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