查找定义了类的 PHP 文件(在运行时) [英] Finding the PHP File (at run time) where a Class was Defined

问题描述

PHP 中是否有任何反射/内省/魔法可以让您找到定义特定类(或函数)的 PHP 文件?

Is there any reflection/introspection/magic in PHP that will let you find the PHP file where a particular class (or function) was defined?

换句话说，我有一个 PHP 类的名称，或者一个实例化的对象.我想将它传递给 something(函数、反射类等)，它会返回定义类的文件系统路径.

In other words, I have the name of a PHP class, or an instantiated object. I want to pass this to something (function, Reflection class, etc.) that would return the file system path where the class was defined.

/path/to/class/definition.php

我意识到我可以使用 (get_included_files()) 来获取到目前为止包含的所有文件的列表，然后手动解析它们，但这是很多文件系统访问一次尝试.

I realize I could use (get_included_files()) to get a list of all the files that have been included so far and then parse them all manually, but that's a lot of file system access for a single attempt.

我还意识到我可以在我们的 __autoload 机制中编写一些额外的代码，将这些信息缓存在某处.但是，在我想到的情况下，修改现有的 __autoload 是禁止的.

I also realize I could write some additional code in our __autoload mechanism that caches this information somewhere. However, modifying the existing __autoload is off limits in the situation I have in mind.

听说可以执行此操作的扩展程序会很有趣，但我最终还是喜欢可以在库存"安装上运行的扩展程序.

Hearing about extensions that can do this would be interesting, but I'd ultimately like something that can run on a "stock" install.

推荐答案

Try ReflectionClass

• ReflectionClass::getFileName — 获取文件名

• ReflectionClass::getFileName — Gets a filename

示例:

class Foo {}
$reflector = new ReflectionClass('Foo');
echo $reflector->getFileName();

当找不到文件名时，这将返回 false，例如在本地课程上.

This will return false when the filename cannot be found, e.g. on native classes.

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