How do I know if an input sting is a method name of a specific class?

Question

Inside an object, I get a string and I have to know if there is a method with the same name in the current object I am in.
How do I do that?

Answer 1

Yeh yeh, I know, RTFM

http://www.php.net/manual/en/function.method-exists.php

Answer 2

if (method_exists ($this, $methodName)) {
    ... exists
}

Answer 3

Use method_exists. Here's an example:

$methodname = 'asdf';
if(method_exists($this, $methodname)) {
  // call_user_func(array($this, $methodname)); See comments
  $this->{$methodname}();
}

Answer 4

I'd say you have not properly designed your application, if you got to check that.