submitFeedback.php

<?php
// Database configuration
$servername = "localhost"; // Usually localhost
$username = "root"; // Your MySQL username
$password = "@SONUsingh1607"; // Your MySQL password
$dbname = "portfolio_db"; // Your database name

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Prepare and bind
$stmt = $conn->prepare("INSERT INTO feedback (firstname, lastname, email, message) VALUES (?, ?, ?, ?)");
$stmt->bind_param("ssss", $firstname, $lastname, $email, $message);

// Set parameters and execute
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$email = $_POST['email'];
$message = $_POST['message'];

if ($stmt->execute()) {
    echo "Feedback submitted successfully!";
} else {
    echo "Error: " . $stmt->error;
}

// Close connections
$stmt->close();
$conn->close();
?>