(PECL imagick 2, PECL imagick 3)
Imagick::optimizeImageLayers — Removes repeated portions of images to optimize
Compares each image the GIF disposed forms of the previous image in the sequence. From this it attempts to select the smallest cropped image to replace each frame, while preserving the results of the animation. 此方法在Imagick基于ImageMagick 6.2.9以上版本編譯時(shí)可用。
此函數沒(méi)有參數。
成功時(shí)返回 true。
錯誤時(shí)拋出 ImagickException。
示例 #1 Using Imagick::optimizeImageLayers()
Reading, optimizing and writing a GIF image
<?php
/* create new imagick object */
$im = new Imagick("test.gif");
/* optimize the image layers */
$im->optimizeImageLayers();
/* write the image back */
$im->writeImages("test_optimized.gif", true);
?>