Instantiating objects in a constructor

[darrylbooth]

I have a class that works great under PHP4, but not under PHP3. I want to reference a method of an object instantiated by another object.

What am I doing wrong/is there a workaround:

class b_object {
function b_object() {
//whatever
}
function b_function() {
//whatever
}
}

class a_object {
var $b_reference;

function a_object() {
$b_reference = new b_object();
}
}

In my main routine, I want to be able to reference methods of b through a:

$a_reference = new a_object();
$a_reference->b_reference->b_function();

Thanks in advance

-Darryl

[simon_belak]

try spliting $a_reference->b_reference->b_function(); in two:

$b_ref = $a_reference->b_reference;
$b_ref->b_function();

P.S. And are you aware that php3 supports refrences only in function calls?

[rajka]

Maybe I'm wrong but I can remember that constructors cannot return anything. If you want to keep reference to object B inside the object A, you have to define a class A like this:

class a_object {

var $b_reference;

function a_object () {
$this->b_reference = new b_object();
}
}

$this is necessary because at end of the a_object contructor $b_reference will destroyed, in this way you reference a class variable that will be destroyed only when then object a_object is destroyed.

I hope this can be helpful...

Darryl wrote:

I have a class that works great under PHP4, but not under PHP3. I want to reference a method of an object instantiated by another object.

What am I doing wrong/is there a workaround:

class b_object {
function b_object() {
//whatever
}
function b_function() {
//whatever
}
}

class a_object {
var $b_reference;

function a_object() {
$b_reference = new b_object();
}
}

In my main routine, I want to be able to reference methods of b through a:

$a_reference = new a_object();
$a_reference->b_reference->b_function();

Thanks in advance

-Darryl