In PHP, what is the differences between NULL and setting a string to equal 2 single quotes

Question

I used to set things like this when I wanted blank values.

$blankVar = \'\';

Then after some months, I decided this looked better and had a

Answer 1

null is a special placeholder value in the programming language that literally means "nothing". It's not 0, it's not an empty string, it's nothing. There is no value in memory being pointed to. An empty string, on the other hand, is still a string object, just a very short one :)