PHP - 从两个JPEG图像创建简单的动画GIF？

Question

有谁知道是否可以从两个不同的JPEG文件生成动画GIF,显示一个图像x秒然后另一个,依此类推......？

任何建议表示赞赏

谢谢.

Answer 1

有关一个不错的,快速的和最新的解决方案,请参阅此SO答案.

对于一个更新的解决方案,这是我的分支,有一些小的修复和改进.来自实际应用的一个例子:

$anim = new GifCreator\AnimGif();

$gif = $anim->create($image_files);
//file_put_contents("test.gif", $gif);

header("Content-type: image/gif");
echo $gif;

(GD2需要PHP5.3.)

适用于PHP 5.6和GD 2.4.11的示例:

require_once "AnimGif.php";

/*
 * Create an array containing file paths, resource var (initialized with imagecreatefromXXX), 
 * image URLs or even binary code from image files.
 * All sorted in order to appear.
 */
$image_files = array(
    //imagecreatefrompng("/../images/pic1.png"), // Resource var
    //"/../images/pic2.png", // Image file path
    //file_get_contents("/../images/pic3.jpg"), // Binary source code
    'https://yt3.ggpht.com/-KxeE9Hu93eE/AAAAAAAAAAI/AAAAAAAAAAA/D-DB1Umuimk/s100-c-k-no-mo-rj-c0xffffff/photo.jpg', // URL
    'https://media.licdn.com/mpr/mpr/shrinknp_100_100/AAEAAQAAAAAAAAloAAAAJDRkZGY2MWZmLTM1NDYtNDBhOS04MjYwLWNkM2UzYjdiZGZmMA.png', // URL
    'http://is5.mzstatic.com/image/thumb/Purple128/v4/e4/63/e7/e463e779-e6d0-0c3d-3ec1-97fdbaae230a/source/100x100bb.jpg' // URL
);

/*
 * Create an array containing the duration (in millisecond) of each frame.
 */
$durations_millis = array(
    1000,
    2000,
    3000
);

/*
 * Fix durations.
 */
$durations = array();
for ($i = 0; $i < count($durations_millis); $i++) {
    $durations[$i] = $durations_millis[$i] / 10;
}

/*
 * Specify number of loops. (0 = infinite looping.)
 */
$num_loops = 0;

/*
 * Create gif object.
 */
$anim_gif = new GifCreator\AnimGif();
$gif_object = $anim_gif->create($image_files, $durations, $num_loops);

/*
 * Get the animated GIF binary.
 */
$gif_binary = $gif_object->get();

/*
 * Set the file name of the saved/returned animated GIF.
 */
$file_name = "animated.gif";

/*
 *  Optionally, save animated GIF in a folder as a GIF:
 */
//file_put_contents($file_name, $gif_binary);

/*
 * Optionally, return the animated GIF to client.
 */
header("Content-type: image/gif");
header('Content-Disposition: filename="' . $file_name . '"'); // Optional
echo $gif_binary;

/*
 * All done.
 */
exit;

Answer 2

使用预装PHP的标准GD功能是不可能的.

phpclasses.org上有一个类.我自己从未使用它,但它被很多其他软件包使用.

或者,如果您可以使用MagickWand库或命令行从PHP 访问ImageMagick,请使用它.使用ImageMagick,没问题.

• ImageMagick v6动画基础知识(来自IM手册)

• 创建动画GIF图像