How can naming conventions for input fields help prevent issues with POST variables in PHP?

Naming conventions for input fields can help prevent issues with POST variables in PHP by ensuring that the names are unique and descriptive. This can help avoid naming conflicts and make it easier to retrieve and process the data sent via POST requests. 

<form method="post" action="process_form.php">
  <input type="text" name="full_name">
  <input type="email" name="email_address">
  <input type="submit" value="Submit">
</form>

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