PHP Empty

Reference on the Empty Function of PHP. Including useful examples, and a list of things that are considered to be Empty.

The Empty function of php, checks whether a variable is Empty or not.

The following is considered to be Empty.

""	An empty String
0	Zero declared as an Integer
0	Zero declared as a String
NULL	The constant NULL
FALSE	The keyword FALSE
var $MyVar;	Declared variables with no value.

Example

Below is using a PHP If statement, to check if a variable was Empty.

if (empty($var)) {
    echo '$MyVar is considered Empty';
}