Get name function in PHP

Question

I have some classes:

class A
{
   private $_method;
   public function __construct()
   {
       $this->_method = new B();
   }
   public function demo()
   {
     $this->_method->getNameFnc();
   }
}

class B
{
   public function getNameFnc()
   {
     echo __METHOD__;
   }
}

I'm trying to get the function name of a class B class, but I want the function getNameFnc to return 'demo'. How do I get the name 'demo' in function getNameFnc of class B?

So, you want to know which function *called* `getNameFnc()`? — gen_Eric, Jan 13 '14 at 16:47
possible duplicate of [How to get name of calling function/method in PHP?](http://stackoverflow.com/questions/2110732/how-to-get-name-of-calling-function-method-in-php) — Drumbeg, Jan 13 '14 at 16:56
@Toàn: I'm a little confused here. What is `getNameFnc` supposed to do? Why does it exist? — gen_Eric, Jan 13 '14 at 20:04

ComFreek · Answer 1 · 2014-01-13T18:22:15.963

1

Well, if you really want to do this without passing a parameter*, you may use debug_backtrace():

→ Ideone.com

public function getNameFnc()
{
  $backtrace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2);
  echo $backtrace[1]['function'];
}

* this would be the recommended way although one should never need to know which function has been previously called. If your application relies on that fact, you have got a major design flaw.

edited Jan 13 '14 at 18:22

answered Jan 13 '14 at 16:46

ComFreek

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+1 for the major design flaw. debug_backtrace should only be used for debugging purposes and not for application workflow. – ILikeTacos Jan 13 '14 at 16:53

ILikeTacos · Answer 2 · 2014-01-13T18:39:27.697

1

You will need to use debug_backtrace to get that information.

I haven't tested the code below but I think this should give you the information you want:

$callers = debug_backtrace();
echo $callers[1]['function'];

edited Jan 13 '14 at 18:39

answered Jan 13 '14 at 16:46

ILikeTacos

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It has to be `$callers[0]`, and you should also limit the backtrace using the second parameter. – ComFreek Jan 13 '14 at 16:51
Sorry for the wrong information in my last comment. Of course it is `1` and not `0`. Even my demo link was buggy, I can't believe that nobody corrected me ;) – ComFreek Jan 13 '14 at 18:23
haha no problem, I didn't have the time to test neither your code nor mine, so I just assumed yours was correct. Thanks for letting me know! – ILikeTacos Jan 13 '14 at 18:39

score 0 · Answer 3 · answered Jan 13 '14 at 16:56

0

Why not pass it?

class A
{
   private $_method;
   public function __construct()
   {
       $this->_method = new B();
   }
   public function demo()
   {
     $this->_method->getNameFnc(__METHOD__);
   }
}

class B
{
   public function getNameFnc($method)
   {
     echo $method;
   }
}

Or use __FUNCTION__ if you don't want the class name.

answered Jan 13 '14 at 16:56

AbraCadaver

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You have basically just created a wrapper for the `echo` function. It works, but is completely pointless. – Drumbeg Jan 13 '14 at 16:59

Get name function in PHP

3 Answers3