What are the advantages and disadvantages of using JavaScript versus PHP for form submission validation in PHP?

When it comes to form submission validation in PHP, using JavaScript for client-side validation can provide a more responsive and interactive user experience. However, relying solely on JavaScript for validation can be risky as it can easily be bypassed by users who disable JavaScript in their browsers. On the other hand, PHP validation on the server-side ensures that data is validated before being processed, making it more secure but less user-friendly. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST["name"];
    $email = $_POST["email"];

    // Server-side validation
    if (empty($name) || empty($email)) {
        echo "Please fill out all fields.";
    } else {
        // Process form data
        // Redirect to success page
    }
}
?>

Keywords

JavaScript PHP form submission validation advantages

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