确定 PHP 中的调用范围 [英] Determine calling scope in PHP

问题描述

有没有办法确定从函数内部调用函数的范围?(或方法；我将在文章的其余部分使用函数来表示任一个.)

Is there a way to determine the scope in which a function is called from inside the function itself? (Or method; I'll use function to mean either in the remainder of the post.)

我不想要的是必须将 __FILE__ 或 __CLASS__ 常量传递到函数中.这些信息在堆栈跟踪等中可用，所以我知道它在某个地方浮动，但我想知道如何在运行时内省它而不抛出异常.

What I do not want is to have to pass __FILE__ or __CLASS__ constants into the function. This information is available in stack traces, etc. so I know it's floating around somewhere, but I'd like to know how to introspect it at runtime without throwing exceptions.

如果解决方案有任何性能特性，我也想知道.

If there are any performance particularities for a solution, I'd like to know about those as well.

我对两个用例感兴趣.

1. 确定哪个文件/行/函数调用了我的函数
2. 确定发起函数调用的类类型

基本上我想要的是这个:

Basically what I want is this:

class util
{
    public static function checkScope()
    {
        echo $magic_scope_stuff;
    }

    public static function blah()
    {
        util::checkScope();
    }
}

util::checkScope(); // main, line 14
util::blah(); // class util, line 9

推荐答案

debug_backtrace() 为此.

结果数组为您提供从入口点到调用 debug_backtrace 的调用跟踪.

The resulting array gives you a call trace from the entry point until the invocation of debug_backtrace.

这篇关于确定 PHP 中的调用范围的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！