how to clone object to child class in php

Question

I have a parent class A, and child class B in PHP. Is there any way to clone instance of class A to instance of B, and to use B class properties later in B instance? Thanks

I don't think you can extend instances in real time if that is what you are asking. Consider giving more details about what you are trying to do though, perhaps there is another way. — Mahn, Oct 14 '12 at 12:47
Does this answer your question? [How do you copy a PHP object into a different object type](https://stackoverflow.com/questions/119281/how-do-you-copy-a-php-object-into-a-different-object-type) — Melebius, Jul 07 '22 at 06:37

score 25 · Accepted Answer · edited May 23 '17 at 12:24

My solution will be based on the solution from this question How do you copy a PHP object into a different object type

class childClass extends parentClass
{
    private $a;
    private $b;

    function loadFromParentObj( $parentObj )
    {
        $objValues = get_object_vars($parentObj); // return array of object values
        foreach($objValues AS $key=>$value)
        {
             $this->$key = $value;
        }
    }
}

$myParent = new parentClass();
$myChild = new childClass();
$myChild->loadFromParentObj( $myParent );

how to clone object to child class in php

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