(PECL imagick 2.0.0)
Imagick::setImageResolution — Sets the image resolution
$x_resolution
, float $y_resolution
) : boolSets the image resolution.
x_resolution
y_resolution
成功时返回 TRUE。
错误时抛出 ImagickException。
Example #1 Imagick::setImageResolution()
<?php
function setImageResolution($imagePath) {
$imagick = new \Imagick(realpath($imagePath));
$imagick->setImageResolution(50, 50);
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
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 $object->readImage('path/to/file'); otherwise the density won't change.
Also see Imagick::setResolution.
This method uses the ImageMagick "-density {$x_resolution}x{$y_resolution}" parameter