[PHP] $this variable reference question

[Adam Reiswig]

I was trying to bend my mind around the concept of the reference 
operator (&) today and came across an article at 
http://www.onlamp.com/pub/a/php/2002/09/12/php_foundations.html where 
the author gave the following example:

<?php
    class test {
        function test($val) {
            global $myref;
            $myref = &$this;
            $this->value = $val;
        }
        function printval() {
            echo "The value of this class is '{$this->value}' <br>";
        }
        function setval($val) {
            $this->value = $val;
        }
    }
?>
My question is actually regarding the line "$myref = &$this;".  The 
author states that this is a reference to the class/object itself. 
Isn't this like saying outside the class "$myref =& new test;"?  What 
would be the point of referring to itself inside the class in this 
manner?  Thanks for your help in advance!

-Adam Reiswig

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