What are the advantages and disadvantages of using local variables instead of session variables in PHP form handling?

When handling form data in PHP, using local variables instead of session variables can provide better security and efficiency. Local variables are only accessible within the current script execution, reducing the risk of data leakage. However, session variables can be useful for persisting data across multiple pages or user sessions. 

// Using local variables for form handling
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = $_POST["username"];
    $password = $_POST["password"];
    
    // Process form data using local variables
}

Keywords

local variables session variables PHP form handling advantages disadvantages

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