Imagick
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Imagick::coalesceImages

(PECL imagick 2.0.0)

Imagick::coalesceImages — Composites a set of images

说明

Imagick Imagick::coalesceImages ( void )

Composites a set of images while respecting any page offsets and disposal methods. GIF, MIFF, and MNG animation sequences typically start with an image background and each subsequent image varies in size and offset. Returns a new Imagick object where each image in the sequence is the same size as the first and composited with the next image in the sequence.

返回值

Returns a new Imagick object on success.

错误/异常

错误时抛出 ImagickException .

Imagick
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PHP手册 - N: Composites a set of images

用户评论:

vikomic at gmail dot com (02-May-2011 11:58)

Here goes an exaple how to resize GIF-s.

<?php
$imagick = new Imagick("original.gif");

$format = $imagick->getImageFormat();
if ($format == 'GIF') {
  $imagick = $imagick->coalesceImages();
  do {
     $imagick->resizeImage(120, 120, Imagick::FILTER_BOX, 1);
  } while ($imagick->nextImage());
  $imagick = $imagick->deconstructImages();
  $imagick->writeImages('new_120x120.gif', true);

  // can be added some more gifs
  $imagick = $imagick->coalesceImages();
  do {
     $imagick->resizeImage(100, 100, Imagick::FILTER_BOX, 1);
  } while ($imagick->nextImage());
  $imagick = $imagick->deconstructImages();
  $imagick->writeImages('new_100x100.gif', true);
}

$imagick->clear();
$imagick->destroy();
?>

You can use any resize method (resizeImage) with this example.

This example works fine with *imagick module version 2.2.1-dev*, but doesn't work correctly with *imagick module version 3.0.1*.