How can PHP beginners create an IF branch to check if a variable is empty or not?

To check if a variable is empty or not in PHP, beginners can use an IF branch with the empty() function. This function checks if a variable is considered empty, which includes being set to NULL, an empty string, 0, or false. By using this function within an IF statement, beginners can easily determine if a variable has a value or not.

$variable = ""; // variable to be checked

if(empty($variable)) {
    echo "Variable is empty";
} else {
    echo "Variable is not empty";
}