What potential pitfalls should be considered when using the isset function in PHP for form submission?

When using the isset function in PHP for form submission, it's important to consider that isset only checks if a variable is set and not empty. This means that isset may return true for variables that have been submitted as empty strings. To avoid this pitfall, you can use the empty function in conjunction with isset to ensure that the variable is both set and not empty before processing the form data. 

if(isset($_POST['submit'])) {
    $name = isset($_POST['name']) ? $_POST['name'] : '';
    
    if(!empty($name)) {
        // Process form data
    } else {
        // Handle empty form field
    }
}

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