Imagick::setImageFormat

(PECL imagick 2.0.0)

Imagick::setImageFormat — Sets the format of a particular image

Описание

bool Imagick::setImageFormat ( string $format )

Внимание

К настоящему времени эта функция еще не была документирована; для ознакомления доступен только список аргументов.

Sets the format of a particular image in a sequence.

Список параметров

format: String presentation of the image format. Format support depends on the ImageMagick installation.

Возвращаемые значения

В случае успешной работы возвращает TRUE.

Коментарии

Oct 08

Автор: Devo


A list of formats can be found here: http://www.imagemagick.org/script/formats.php



Formats marked with a W can be output to file with writeImage (capabilities depend on your particular installation of course).



For example:



<?php

// create new imagick object from image.jpg

$im = new Imagick( "image.jpg" );



// change format to png

$im->setImageFormat( "png" );



// output the image to the browser as a png

header( "Content-Type: image/png" );

echo $im;



// or you could output the image to a file:

//$im->writeImage( "image.png" );

?>

2007-10-08 06:02:57

http://php5.kiev.ua/manual/ru/function.imagick-setimageformat.html

Nov 22

Автор: optymizer at yahoo dot com


The previous example did not work for me. I received an error that the IMagick object cannot be converted to string.



This example uses the IMagick::getImageBlob() method to properly output the contents of the converted image:



function getImage($filename)

{

            $image->readImage($filename);

            $image->setImageFormat("png");

            header("Content-type: image/png");

            echo $image->getImageBlob();

}



Hope this helps!

2007-11-22 01:09:41

http://php5.kiev.ua/manual/ru/function.imagick-setimageformat.html

Mar 13

Автор: barclay[dot]loftus[at]gmail.com


Another note about image output. For jpeg images, the quality is adjusted by Imagick::setCompressionQuality(). 



<?php

$img->setCompressionQuality(90);

$img->setImageFormat('jpeg');

header('Content-type: image/jpg');

echo $img;

?>

2008-03-13 01:04:52

http://php5.kiev.ua/manual/ru/function.imagick-setimageformat.html

Feb 26

Автор: andy at live dot nl


I had a problem when using $im->setImageFormat('jpeg');

Image colors got inverted when i converted pdfs to jpg thumbs.

Had to add $im->setImageColorspace(255); to solve it.



<?php

// read page 1

$im = new imagick( 'test.pdf[ 0]' );



// convert to jpg

$im->setImageColorspace(255);

$im->setCompression(Imagick::COMPRESSION_JPEG);

$im->setCompressionQuality(60);

$im->setImageFormat('jpeg');



//resize

$im->resizeImage(290, 375, imagick::FILTER_LANCZOS, 1);  



//write image on server

$im->writeImage('thumb.jpg');

$im->clear();

$im->destroy();

?>

2009-02-26 16:54:53

http://php5.kiev.ua/manual/ru/function.imagick-setimageformat.html

Aug 18

Автор: nathan at crause dot name


For those of you completely confused by the utter lack of documentation for this class (including notes being dropped, probably this one included), the differences between any "setXXX" and "setImageXXX" seems to be entirely dependently on HOW the image was loaded.



If the image was loaded at object constructor time, it seems that you use "setXXX" - if you loaded it after the fact (such as via "readImageBlob") then you use "setImageXXX".



This is irregular, however. For example:



<?php

        $image = new Imagick();



        $image->setResolution(300, 300);

        $image->readImageBlob(...);

        // convert the output to JPEG

        $image->setImageFormat('jpeg');

        $image->setImageCompressionQuality(90);

?>



Note that we use "setResolution" not "setImageResolution".