What are best practices for ensuring that PHP forms do not retain previously entered values unintentionally?

To ensure that PHP forms do not retain previously entered values unintentionally, you can add the `autocomplete="off"` attribute to the form element in your HTML code. This will prevent browsers from suggesting previously entered values in the form fields. 

<form action="submit.php" method="post" autocomplete="off">
  <label for="username">Username:</label>
  <input type="text" id="username" name="username">
  
  <label for="password">Password:</label>
  <input type="password" id="password" name="password">
  
  <input type="submit" value="Submit">
</form>

Keywords

PHP forms input fields session variables data validation

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