Question

How can I access function b from within function a?

This is what I have so far, and I’m getting this error: PHP Fatal error: Call to undefined method a::b()

class test {
 function a($x) {
   switch($x)
   {
    case 'a'://Do something unrelated to class test2
      break;
    case 'b':
      $this->b();       
      break;
   }
 }
}

class test2 extends test {
 function b() {
  echo 'This is what I need to access';
 }
}

$example=new test();
$example2=new test2();
$example->a(b);

For background information – function a is a switch for requests sent via AJAX. Depending on the request, it calls a function to add a record to a database, edit it etc.

Thanks!

Answer 1

You have to define an abstract method b in the base class test (which makes this class abstract, so you cannot have instances of it) to call this method, otherwise the function b is not defined in this class, only in it’s subclass of which the base class knows nothing (and should not have to know anything).

Read up on inheritance.

Another thing: a and b are not defined, use quotes. (But this might be just lazyness in your example)