How can the use of empty() function in PHP help in checking the content of a variable before executing certain code?

When writing PHP code, it is important to check if a variable contains any content before using it in certain operations to avoid errors or unexpected behavior. The empty() function in PHP can be used to easily check if a variable is empty or not. By using empty() before executing code that relies on the variable, you can ensure that the variable has content and prevent errors.

// Check if the variable $myVar is not empty before executing code
if(!empty($myVar)){
    // Code to execute if $myVar is not empty
    echo "Variable is not empty: " . $myVar;
} else {
    // Code to execute if $myVar is empty
    echo "Variable is empty";
}