What are some best practices for structuring and organizing PHP code to avoid errors in scripts like contact forms?

When working with PHP code for contact forms, it is important to properly structure and organize your code to avoid errors. One best practice is to separate your PHP logic from your HTML markup by using a templating system like PHP's built-in `include` function. This helps keep your code clean and maintainable, making it easier to troubleshoot and debug any issues that may arise. 

<?php
// Include the form processing logic in a separate PHP file
include 'form_processor.php';

// HTML form markup
?>
<form action="submit_form.php" method="post">
    <input type="text" name="name" placeholder="Name">
    <input type="email" name="email" placeholder="Email">
    <textarea name="message" placeholder="Message"></textarea>
    <button type="submit">Submit</button>
</form>

Keywords

validation sanitization error handling secure coding form submission

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