How can proper HTML coding help prevent issues with PHP form submissions?

Improper HTML coding can lead to issues with PHP form submissions, such as missing or incorrect input field names. To prevent these issues, ensure that all input fields have unique and descriptive names within the form. This will allow PHP to correctly access and process the form data.

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