[johndapunk]

I am having a little problem understanding the logic behind this. I study some code (occasionally), and I saw this in IPB's scripts. At the begining of a class, it will have:

PHP Code:

<?php

class classname {

var $ipsclass;

...

}

?>

and then later on, it is able to use the $ipsclass object like so:

PHP Code:

$this->ipsclass->... 

I have tried to figure out how it does it, but I still don't understand. If you get what I'm asking, please respond. If you think you might know the answer, but don't really understand the question, please IM me at jondapunk (AIM), or johndapunk@hotmail.com (MSN).

Thanks

[Nico]

It's basically just creating a new object inside a class.

Something like this

PHP Code:

<?php





class wooo

{

    var $something;



    function wooo()

    {

        $this->something = new yeah;

    }

}





class yeah

{

    function display()

    {

        echo 'What';

    }

}



$test = new wooo;



$test->something->display();



?>

[johndapunk]

Yeah, I got that part of it. But what I don't get is how the $ipsclass variable has the class object in it without declaring any

PHP Code:

$this->ipsclass = new ipsclass 

Also, the classes with the

PHP Code:

<?php

class classname {

var $ipsclass;

...

}

?>

are in different files from the Super Class.

[johndapunk]

Here, I'll post my code so you might get a better point of it.

super.php:

PHP Code:

<?php

/**

* Test Super Class

*

*/

global $SUPER;

$SUPER = new super;

REQUIRE_ONCE( 'test_three.php' );

class super {

public $num;

function __construct( ) {

    $this->num = 5;

    }

}

?>

test_three.php:

PHP Code:

<?php 

/**

* Test Three

*

*/



class three {

public function f( $x ) {

    $f = 5 * intval( $x );

    echo $f;

}

}

$three = new three;

$three->f( $super->num );

?>

And it echos "0", which obviously means that $super->num in test_three.php is undefined.

[Barnz1986]

Originally Posted by johndapunk

Yeah, I got that part of it. But what I don't get is how the $ipsclass variable has the class object in it without declaring any

PHP Code:

$this->ipsclass = new ipsclass 

Also, the classes with the

PHP Code:

<?php

class classname {

var $ipsclass;

...

}

?>

are in different files from the Super Class.

Strange, im sure the $this->ipsclass = new ipsclass must be somewhere in there.

Does the class extend another class? but then you would think the var $ipsclass would be in the super class etc.

[johndapunk]

No, it doesn't. It's obvious that the file is getting the object from another file that it is INCLUDED into, and I'm assuming all files are linked to the ipsclass.php one way or another; but that still doesn't explain how the ipsclass class can be stored in the $ipsclass object without declaring it. Think it involves globals or something?