What are some best practices for handling form submission in PHP without relying on JavaScript?

When handling form submission in PHP without relying on JavaScript, it is important to validate the form data on the server side to ensure data integrity and security. One common practice is to use conditional statements to check if the form has been submitted and process the data accordingly. Additionally, utilizing PHP functions like filter_input() or isset() can help sanitize and validate user input. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Check if form has been submitted
    if (isset($_POST['submit'])) {
        // Process form data
        $name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_STRING);
        $email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL);

        // Perform further validation and processing
    }
}
?>

Keywords

form submission PHP server-side validation security measures error handling

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