Imagick::setOption

(PECL imagick 2, PECL imagick 3)

Imagick::setOptionオプションを設定する

説明

public Imagick::setOption(string $key, string $value): bool

ひとつあるいは複数のオプションを設定します。

パラメータ

key

value

戻り値

成功した場合に true を返します。

例1 Attempt to reach '$extent' sizeImagick::setOption()

<?php
function renderJPG($extent) {
$imagePath = $this->control->getImagePath();
$imagick = new \Imagick(realpath($imagePath));
$imagick->setImageFormat('jpg');
$imagick->setOption('jpeg:extent', $extent);
header("Content-Type: image/jpg");
echo
$imagick->getImageBlob();
}

?>

例2 Imagick::setOption()

<?php
function renderPNG($imagePath, $format) {

$imagick = new \Imagick(realpath($imagePath));
$imagick->setImageFormat('png');
$imagick->setOption('png:format', $format);
header("Content-Type: image/png");
echo
$imagick->getImageBlob();
}

//Save as 64bit PNG.
renderPNG($imagePath, 'png64');

?>

例3 Imagick::setOption()

<?php
function renderCustomBitDepthPNG() {
$imagePath = $this->control->getImagePath();
$imagick = new \Imagick(realpath($imagePath));
$imagick->setImageFormat('png');

$imagick->setOption('png:bit-depth', '16');
$imagick->setOption('png:color-type', 6);
header("Content-Type: image/png");
$crash = true;
if (
$crash) {
echo
$imagick->getImageBlob();
}
else {
$tempFilename = tempnam('./', 'imagick');
$imagick->writeimage(realpath($tempFilename));
echo
file_get_contents($tempFilename);
}
}

?>

add a note

User Contributed Notes 4 notes

up
7
kicha at kreker dot org
9 years ago
List of options (with key => value) on official imagemagick site:
http://www.imagemagick.org/script/command-line-options.php#define
up
3
alexandre at gaigalas dot net
13 years ago
If you want to extract a preview from a PDF file using the CropBox instead of the whole document, setOption() is the right method:

<?php
$handler
= new Imagick();
$handler->setOption('pdf:use-cropbox', 'true');
$handler->readImage($imageFileName);
$handler->thumbnailImage(200, 200, true);
$handler->setImageFormat('jpeg');
$handler->writeImage($destThumbFileName);
?>

It is the equivalent to the -define pdf:use-cropbox=true for the convert command line tool. pdf:use-trimbox is also available.

Note that on my environment the setOption only worked when i called it before the readImage method, which means that you can't pass the filename to the Imagick constructor directly.
up
1
SkepticaLee
4 years ago
Actually setImageArtifact () can be used if setOption () fails, e.g.

$im->setImageartifact ("distort:viewport", "960x540+0-151");

Or maybe setOption () is deprecated.
up
0
dodginess at yahoo dot com
5 months ago
It does not appear to be possible to disable anti-aliasing using the setOption() method as might be expected, and calling the setOption() method like this does not do anything:

$imagick->setOption('antialias', FALSE);

As discussed at https://github.com/Imagick/imagick/issues/83 the correct way to do this appears to be to use the setAntiAlias() method, which is not currently documented in the PHP manual. As an example, to disable anti-aliasing for an image you can do this:

$imagick->setAntiAlias(FALSE);
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