<?php session_start(); if (isset($_SESSION['username'])) { header("Location: index.php"); } $username = $_SESSION['username']; $firstName = $_POST['firstName']; $lastName = $_POST['lastName']; $street = $_POST['street']; $zipCode = $_POST['zipCode']; $phoneNumber = $_POST['phoneNumber']; $email = $_POST['email']; $password = $_POST['password']; $servername = "localhost"; $username = ""; $password = ""; $db = "test"; // Create connection $conn = new mysqli($servername, $username, $password, $db); // Check connection if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } else { $sql = "UPDATE testtable SET column1=value, column2=value2 WHERE email = {$username}"; //change to watever the table is with user information $result = $conn->execute($sql); } $conn->close();