PHP remove “reference” from a variable.

Question

I have the code below. I want to change $b to use it again with values. If I do so it changes $a as well. How can I assign a value to $b again after previously assigning it

Answer 1

First of all: Creating a reference from $a to $b creates a connection (for the lack of a better word) between the two variables, so $a changing when $b changes is exactly the way it is meant to work.

So, assuming you want to break the reference, the easiest way ist

unset($b);
$b="new value";