How to convert a child instance to parent class and the reverse in PHP?
$child_instance = (childClas开发者_如何学JAVAs)$parent_instance;
$parent_instance = (parentClass)$child_instance;
Or is it possible?
Okay, I am pretty new to OOP in PHP too, and hence, had spent like an hour to look for a way to convert a child class instance to a parent class instance.
Alas, found it!
In your child class, just have this method:
function loadChildWithParent($instanceOfParent) {
$props = get_object_vars($instanceOfParent);
foreach ($props as $key => $val)
{
$this->$key = $val;
}
}
And in your parent class, you can just call this method via:
$objNew = new student();
$objNew->voidLoadStudent($this);
No. After you use new ClassA
you cannot change the type of class the class of that object.
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