In what scenarios would using POST instead of GET be more appropriate for passing extra parameters in PHP?

Using POST instead of GET would be more appropriate when passing sensitive or large amounts of data, such as passwords, credit card information, or file uploads. This is because POST requests send data in the request body, which is not visible in the URL like GET requests. Additionally, POST requests have no length restrictions on the amount of data that can be sent.

<form method="post" action="process.php">
    <input type="text" name="username" placeholder="Username">
    <input type="password" name="password" placeholder="Password">
    <input type="submit" value="Submit">
</form>