How can including the main.php file instead of using the header function improve the user experience and overall functionality of the login script?

Using the header function to redirect to another page can cause issues with headers already sent errors, especially if there is any output before the redirection. Including the main.php file directly in the login script can improve user experience by seamlessly transitioning to the main page without any redirection delays or errors. 

// Login script
// Check username and password
if($valid_user) {
    // Start session
    session_start();
    
    // Include main.php file
    include 'main.php';
} else {
    // Display login form
    include 'login_form.php';
}

Keywords

main.php header function user experience functionality login script

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