What are the advantages of using input type "submit" over anchor tags for triggering PHP scripts in web applications?

Using input type "submit" over anchor tags for triggering PHP scripts in web applications is advantageous because it ensures that the form data is submitted securely without exposing sensitive information in the URL. It also allows for easier handling of form validation and data processing on the server-side. Additionally, using input type "submit" follows best practices for form submissions in web development.

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