I'm fairly new to PHP and I've come across the term "null type" in some tutorials I've been going through. I tried searching online, but I'm still struggling to grasp the purpose of the null type in PHP.
From what I understand so far, null is a special data type in PHP that represents the absence of a value. But why is it necessary to have a separate null type? Can't we just use other data types like strings or integers to represent the absence of a value?
I'm hoping someone can shed some light on this for me. Thanks in advance for any help or insights you can provide!