MATLAB：将3D矩阵转换为单元阵列(MATLAB: Converting 3D matrix to cell array)

 您必须为图像创建唯一的URL，因此浏览器将始终重新加载字母而不是使用缓存的字母。 你可以用一个小的PHP来实现这一点，它为参数输出正确的gif。 
 
<img src="gif_printer.php?letter=o&t=1234567">
 
 t参数应该是创建img标记时的时间戳。 这为重新下载提供了足够的差异。 
 
 在php设置标题中限制/禁用缓存和输出类型为gif，并简单地将图像的内容倒入stdout。 
 
 时间戳参数和缓存控制标题应足以让浏览器重新下载外部字母。 
 
 如果您的测试环境没有做出正确的反应，您可以尝试使用htaccess解决方案，但为此您必须使用Web服务器（这可能已足以使之前的解决方案正常工作）。 
 
 这意味着将任何url重写为images / [az] .gif为images / [az] .gif，因此只需删除除第一个字母和扩展名之外的其他噪音。 

You have to create unique urls for the images, so the browser will always reload letters instead of using the cached ones. You could achieve this for example with a small php, which is outputting the correct gif for a parameter.
 
<img src="gif_printer.php?letter=o&t=1234567">
 
The t parameter should be the timestamp when you create the img tag. This gives enough difference to redownload.
 
In the php set headers to limit/disable caching and output type to gif, and simply pour the contents of the image to stdout.
 
The timestamp parameter and the cache-control headers should be enough for the browser to redownload evert letter.
 
If your test environment is not reacting correct, you could try htaccess solution, but for that you have to use a web server (and this could already be enough for the previous solution to work).
 
That means rewrite any url to images/[a-z].gif into images/[a-z].gif, so simply remove additional noise except the first letter and the extension.