How can PHP functions or methods be used to streamline the process of handling multi-page forms and validation?

Handling multi-page forms and validation in PHP can be streamlined by creating functions or methods to handle form submission, validation, and data persistence across multiple pages. By encapsulating these tasks into reusable functions, you can reduce code duplication, improve readability, and make it easier to maintain and update the form logic. 

<?php

// Function to handle form submission and validation
function handleFormSubmission() {
    if ($_SERVER["REQUEST_METHOD"] == "POST") {
        // Validate form data
        if (validateFormData($_POST)) {
            // Save form data to session or database
            saveFormData($_POST);
        }
    }
}

// Function to validate form data
function validateFormData($formData) {
    // Add your validation logic here
    // Return true if data is valid, false otherwise
}

// Function to save form data
function saveFormData($formData) {
    // Add your code to save form data to session or database
}

// Call the function to handle form submission
handleFormSubmission();

?>

Keywords

PHP functions methods multi-page forms validation streamline

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