How to Check If a Variable is Empty with the empty() Function in PHP

In this article, you will learn how to check if a variable is empty with the empty() function in PHP.

PHP empty() Function

The empty() function checks if a variable is empty.

This function returns true if the value of the variable is empty, false otherwise.
Specifically, the following values ​​are considered empty:

• 0
• 0.0
• “0”
• “”
• NULL
• FALSE
• array()

Syntax:

empty($variable);