如何在没有exec/shell_exec的情况下使用php显示活动的git标记

问题描述

假设当前已签出标签，并且.git文件夹位于站点代码库的根目录中，我想使用php将标签包含在页面的呈现html中.

Assuming a tag is currently checked out, and the .git folder sits in the root of the site's codebase, I'd like to include the tag in the rendered html of a page using php.

我已经看到了使用shell_exec/shell的解决方案，但是假设我无法使用这两个函数，如何获得当前已检出标签的标签.例如v1.2.3仅使用php吗?

I've seen solutions which make use of shell_exec / shell, but assuming I'm unable to use those two functions, how can I get the label of the currently checked out tag. For example v1.2.3 using php alone?

推荐答案

您可以从.git/HEAD获取当前HEAD提交哈希.然后，您可以循环所有标记引用以查找匹配的提交哈希.我们首先将阵列反转，因为您比以前的旧标签更有可能使用最新标签.

You can get the current HEAD commit hash from .git/HEAD. You can then loop all tag refs to find a matching commit hash. We reverse the array first as you're more likely to be on a recent tag than an old one.

显然，用变量替换exit并将其吐到页面上会带来更好的结果.

Obviously replacing the exits with variabled and spitting it to the page will give you a better result.

因此，如果您的php文件位于.git文件夹下一级的public_html或www文件夹中...

So if your php file sits in a public_html or www folder one level down from the .git folder...

<?php

$HEAD_hash = file_get_contents('../.git/refs/heads/master'); // or branch x

$files = glob('../.git/refs/tags/*');
foreach(array_reverse($files) as $file) {
    $contents = file_get_contents($file);

    if($HEAD_hash === $contents)
    {
        exit('Current tag is ' . basename($file));
    }
}

exit('No matching tag');

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