weird class reference issue, help needed

[jack_xu_hong]

Hi PHP gurus, please look at the following code

class ClassA {
	var $b;
	function ClassA() {
		$this->b =& new ClassB($this);
	}

function heyB() {
	$this->b->yes();
}
}

class ClassB {
	var $a;
	function ClassB(&$a) {
		$this->a = $a;
	}

function yes() {
	echo "Yes, I am a ".get_class($this)."<br>";
	echo "You are ".get_class($this->a).", and you think I am ".get_class($this->a->b)."<br>";
}
}

$a =& new ClassA();
$a->heyB();

I assume the output should be:
Yes, I am a classb
You are classa, and you think I am classb

but what I get is:
Yes, I am a classb
You are classa, and you think I am

which means get_class($this->a->b) returns nothing, do I use class references in a wrong way? any tips would be greatly appreciated!

Jack

[jack_xu_hong]

sorry, forgot to say i'm using PHP 4.3.2

[maybl8r03]

Try

class ClassA2 {
    var $b; 
    function ClassA2() {
        $this->b =& new ClassB2(&$this);
    }

function heyB() {
    $this->b->yes();
}
}

class ClassB2 {
    var $a;
    function ClassB2($a) {
        $this->a =& $a;
    }

function yes() {
    echo "Yes, I am a ".get_class($this)."<br>";
    echo "You are ".get_class($this->a).", and you think I am ".get_class($this->a->b)."<br>";
} 
} 

$a =& new ClassA2();
$a->heyB();

PHP object and class references will be more of a joy when PHP5 is in general circulation, until then, remember that you are always working on a copy of an object not a reference.

[jack_xu_hong]

Originally posted by maybl8r03
Try

class ClassA2 {
    var $b; 
    function ClassA2() {
        $this->b =& new ClassB2(&$this);
    }

function heyB() {
    $this->b->yes();
}
}

class ClassB2 {
    var $a;
    function ClassB2($a) {
        $this->a =& $a;
    }

function yes() {
    echo "Yes, I am a ".get_class($this)."<br>";
    echo "You are ".get_class($this->a).", and you think I am ".get_class($this->a->b)."<br>";
} 
} 

$a =& new ClassA2();
$a->heyB();

PHP object and class references will be more of a joy when PHP5 is in general circulation, until then, remember that you are always working on a copy of an object not a reference. [/B]

THANK YOU SO MUCH!!! YOU ARE TRULY A PHP SCHOLAR!!!