PHP Object Assignment vs Cloning

Question

I know this is covered in the php docs but I got confused with this issue .

From the php docs :

$instance = new SimpleClass();
$assigned   =  $ins         


        

Answer 1

 $assigned = $instance 

Above will assign $instance to $assigned, the most basic assign.

 $assigned = clone $instance 

This is for object clone. Assign a copy of object $instance to $assigned.

Without clone, $assigned and $instance has same object id, which means they are pointing to same object.