Imagick::setImageResolution

(PECL imagick 2.0.0)

Imagick::setImageResolution — Sets the image resolution

说明

Imagick::setImageResolution ( float $x_resolution , float $y_resolution ) : bool

Sets the image resolution.

参数

x_resolution
y_resolution

返回值

成功时返回 TRUE。

错误／异常

错误时抛出 ImagickException。

范例

Example #1 Imagick::setImageResolution()


<?php
function setImageResolution($imagePath) {
    $imagick = new \Imagick(realpath($imagePath));
    $imagick->setImageResolution(50, 50);
    
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}

?>

User Contributed Notes

craig dot fairhurst at nospamyouds dot com 12-Feb-2010 10:12


Note that any changes to the resolution (-density option) must be made before specifying the file, so construct the object with no file path and then use $object->readImage('path/to/file'); otherwise the density won't change. 

Also see Imagick::setResolution.

octave at web dot de 17-Jul-2009 09:27


This method uses the ImageMagick "-density {$x_resolution}x{$y_resolution}" parameter