[edit] Last updated: Fri, 17 May 2013

Imagick::setImageCompression

(PECL imagick 2.0.0)

Imagick::setImageCompression — Sets the image compression

说明

bool Imagick::setImageCompression ( int $compression )

参数

compression: One of the COMPRESSION constants

返回值

成功时返回 TRUE。

错误／异常

错误时抛出 ImagickException。

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snipes2083 [at] yahoo com ¶

3 years ago


Above it says "One of the COMPRESSION constants" for the parameters.  For any of you that found this confusing, you can find a list of the constants here:



Predefined Constants

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



As an example for working with a jpeg image:



<?php

    $image = 'jpeg_image.jpg';

    $comression_type = Imagick::COMPRESSION_JPEG;

    

    $im = new Imagick($image);

    $im->setImageCompression($compression_type);

?>



This class does not actually compress the images but rather sets the compression type that is going to be used.  



If you would like to see how to compress the image see:

Imagick::setImageCompressionQuality

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