How can PHP forms be integrated into HTML code on the same page for efficient processing?

To integrate PHP forms into HTML code on the same page for efficient processing, you can use conditional statements to check if the form has been submitted. If the form has been submitted, you can process the form data using PHP. Otherwise, you can display the HTML form.

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data here
    $name = $_POST["name"];
    $email = $_POST["email"];
    // Additional processing code
} else {
    // Display HTML form
    echo '<form method="post" action="' . $_SERVER["PHP_SELF"] . '">
            <input type="text" name="name" placeholder="Name">
            <input type="email" name="email" placeholder="Email">
            <button type="submit">Submit</button>
          </form>';
}
?>