如何使用PHP获取被调用方? [英] How can I get the callee in PHP?

问题描述

可能重复:
PHP 5中的调用函数?

Possible Duplicate:
Caller function in PHP 5?

我想知道从哪里调用全局函数或公共方法.我想我可以通过检查debug_backtrace来做到这一点，但如果有的话，我宁愿使用轻量级的机制.有什么建议吗?

I would like to know from where a global function or public method is being called. I guess I could do it by inspecting debug_backtrace but I'd rather use a lighterweight mechanism if one exists. Any suggestions?

例如类似的事情，如果您想象get_callee()函数和现有常量存在:

For example something like so, if you imagine the get_callee() function and constant existing:

function doSomething() {
     if(get_callee() == 'PHP_GLOBAL') { throw new IllegalAccessException(); }
     ...
}

推荐答案

抱歉，现在看到了有关debug_backtrace()的注释.

Kinda丑陋，但是，嘿，如果您需要这样做，那是错误的.

Kinda ugly but hey, if you need to do this something is wrong.

神奇之处在于get_callee()函数和debug_backtrace().是的，如果必须使用此功能，请添加一些错误检查.

The magic is in the get_callee() function and debug_backtrace(). And yes, add some error checking if you must use this.

<?php

init();

function foo()
{
 echo 'bar called from ' . get_callee() . '<br />';
 bar();
}

function bar()
{
 echo 'foo called from ' . get_callee() . '<br />';
}

function init()
{
 echo 'init.. <br />';
 foo();
}

function get_callee()
{
 $backtrace = debug_backtrace();
 return $backtrace[1]['function'];
}

输出:

init ..

init..

从foo调用的栏

从酒吧打来的foo

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