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

09/04/2021
Contents
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);