PHP Phar - file_exists（）问题 [英] PHP Phar - file_exists() issue

问题描述

My Phar脚本使用fwrite创建一个新文件，该文件工作正常，它在phar之外创建新文件，与phar文件位于同一目录中。

My Phar script creates a new file with fwrite, which works fine, it creates the new file outside the phar, in the same directory as the phar file.

但是当我使用if（file_exists（'file.php'））时它不会把它拿起来。

But then when i use if(file_exists('file.php')) it doesn't pick it up.

但是然后包括并且要求捡起它。

But then include and require do pick it up.

任何人都知道这个问题？
经过一段时间的测试和研究似乎无法找到解决方案。

Anyone know about this problem? Been testing and researching for a while a can't seem to find a solution.

推荐答案

在PHAR的存根，你可以使用 __ DIR __ 魔术常量来获取PHAR文件的文件夹。

At the PHAR's stub, you can use the __DIR__ magic constant to get the PHAR file's folder.

考虑到这一点，你可以只需使用

With that in mind, you can simply use

is_file(__DIR__ . DIRECTORY_SEPARATOR . $path);

检查文件是否存在于PHAR之外。

To check for a file's existence outside the PHAR.

只能从存根执行此操作，并且只有它是自定义存根，而不是由Phar :: setDefaultStub（）生成的存根。如果你需要检查更下面的文件，你必须以某种方式使该常量值可用，如全局变量，自定义非魔法常量或静态属性或其他文件，然后咨询。

You can ONLY do this from the stub, and ONLY if it's a custom stub, as opposed to one generated by Phar::setDefaultStub(). If you need to check for files further down the line, you'll have to make that constant's value available somehow, like a global variable, a custom non-magical constant or a static property or something, which other files then consult with.

编辑：实际上，你也可以使用 dirname（Phar :: running（false））来获取PHAR的文件夹来自PHAR的任何地方。如果你不在PHAR中，那个函数会返回一个空字符串，所以无论你的应用程序是作为PHAR执行还是直接执行，它都可以正常工作，例如

Actually, you can also use dirname(Phar::running(false)) to get the PHAR's folder from anywhere in the PHAR. That function returns an empty string if you're not within a PHAR, so whether your application is executed as a PHAR or directly, it should work fine, e.g.

$pharFile = Phar::running(false);
is_file(('' === $pharFile ? '' : dirname($pharFile) . DIRECTORY_SEPARATOR) . $path)

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