Var from class a to class b?

[dv6cougar]

Hello, been searching for about a day now trying to figure out if this is possible. No luck 🙂

I have three classes - c extends b and b extends a - now getting a var from a to b, is easy... getting one from b to c, seems impossible.

Lets make a quick example, so you can understand me.

class a {

protected $var;

$this->var = 'some value';

public function a() { // do something }

}

class b extends a {

protected $somevar;

$this.>somevar = 'some value 2';

public function b() { // do something else }

}

class c extends b {

public function c() { 

echo parent:: $this->var; // this works

echo parent:: $this->somevar; // this gives an error

}

}

what i need is for $this->somevar to be read inside class c - how is this done? I'm sure it has to be possible, but how? 🙂

Been playing around with getting the parent class and i can get a name, but:

parent:: $this->var; // found
// lets say i have gotten the name of b, so b being class b
b:: $this->somevar; // not found

Any helps appreciated 😃

[laserlight]

This works for me:

<?php

class a {

protected $var = 'some value';

}

class b extends a {

protected $somevar = 'some value 2';

}

class c extends b {

public function __construct() {
    echo parent::$this->var;
    echo "<br />\n";
    echo parent::$this->somevar;
}

}

new c();

EDIT:
Actually, since we are dealing with protected member variables, you do not even need the parent:: prefix in the first place.

[dv6cougar]

My bad, that does work 🙂 - but that's not my problem, i guess there's a difference between a var in the root of the class, and one in a function within the class.

So i'll remake my example, to work like that :p then ask again 🙂

class a {

protected $var;

$this->var = 'some value';

public function a() { // do something 


}

}

class b extends a {

protected $somevar;



public function b($some_var) { // do something else 
$this.>somevar = $some_var;
}

}

class c extends b {

public function c() { 

echo parent:: $this->var; // this works

echo parent:: $this->somevar; // this gives an error

}

}

i have also thought of calling the constructor of b, however, the whole idea is not to have to set $some_var when calling function c(), to get $this->somevar to be returned.

i also tried making a seperate function in class b, returning the value of $this->somevar, but that does not work either.

Thanks for the reply 😃

Edit:

I actually didn't know that 🙂

[NogDog]

It's hard to know for sure what you're really after with such an abstract example, but this "works", though functionally I don't know if it approaches what you actually want/need:

<?php
class a
{
   protected $var = "some value";
   public function a()
   { // do something

   }
}
class b extends a
{
   protected $somevar;
   public function b($some_var)
   { // do something else
      $this->somevar = $some_var;
   }
}
class c extends b
{
   public function c($some_var)
   {
      parent::b($some_var);
      echo $this->var;
      echo "<br />";
      echo $this->somevar;
   }
}

$test = new c('this is a test');