What are the key differences between PHP and HTML in terms of code structure and functionality for web development?

PHP is a server-side scripting language that is used to create dynamic web pages by embedding PHP code within HTML. HTML, on the other hand, is a markup language used to structure content on web pages. The key difference is that PHP allows for the execution of code on the server before the HTML is sent to the client, enabling dynamic content generation and interaction with databases. HTML, on the other hand, is static and only defines the structure and layout of the web page. 

<?php
// PHP code to process form data and display a message
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST["name"];
    $email = $_POST["email"];
    
    echo "Thank you, $name! Your email address $email has been successfully submitted.";
}
?>

Keywords

PHP HTML code structure functionality web development

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