title: What is the difference between null and empty?
body: <p>I am new to the concept of empty and null. Whilst I have endeavoured to understand the difference between them, I am more confused. I came across an article at <a href="http://www.tutorialarena.com/blog/php-isset-vs-empty.php">http://www.tutorialarena.com/blog/php-isset-vs-empty.php</a> however I still don't see when you would use isset and empty when validating forms. Seeing that I don't grasp the difference, I don't want to be using the incorrect functions as well as not be able to use the functions in other areas. Can someone give examples that will help me understand? I am very new to coding so would appreciate if someone could give me real world examples and at the same time keep it simply enough for noob to follow.</p>