Hi,
could anyone help on this 'by reference' problem.
I have 2 classes. The main class as a child class.
The child class has properties (array)
I would like to be able to manipulate the child's properties even after the child has
been inserted into the main class.
Does this make sense?
I can do it with by getting a reference of the child class, then setting the
property,like :
$tmp = $main-getChild(); //get a reference to the child object
$tmp-setProperty(forth);//ok
OR
$main-setChildProperty(third); //ok
but Whyt can't I do it directly by calling a reference to the child, like in :
$child1-setproperty(second); //The property is not set or not displayed
I know I need a reference to the child class that is within the maoin class, but HOW??
Here is a complete example
?php
class class1{
var $child; //array
function class1(){
$this-properties = array();
}
//set the child object (class2)
function setChild($child){
$this-child=$child;
}
//get the child object (class2), and call its setProperty method
function setChildProperty($prop){
$theChild = $this-child;
$theChild-setProperty($prop);
}
//return a reference to the child object
function getChild(){
return $this-child;
}
//print the child object properties
function display(){
$this-child-toString();
}
}
class class2{
var $properties; //array
function class2(){
$this-properties = array();
}
function setProperty($new_property){
$this-properties[] = $new_property;
}
function getProperty($index){
return $this-properties[$index];
}
function toString(){
print_r($this-properties);
}
}
$main = new class1();
$child1 = new class2();
$child1-setproperty(first);//displayed
$main-setChild($child1);
$child1-setproperty(second); //NOT DISPLAYED
$main-setChildProperty(third); //displayed
$tmp = $main-getChild(); //get a reference to the child object
$tmp-setProperty(forth);//displayed
$main-display();
//output : Array ( [0] = first [1] = third [2] = forth )
?
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