// Connect to database $mysqli = new mysqli("localhost", "username", "password", "dbname"); // Define user ID to retrieve $user_id = 123; // Execute query to select user data by ID $result = $mysqli->query("SELECT * FROM users WHERE id = '$user_id'"); // Fetch user data from query result $user_data = $result->fetch_assoc(); // Print user data echo "User ID: " . $user_data['id'] . "
"; echo "Username: " . $user_data['username'] . "
"; echo "Email: " . $user_data['email'] . "
";
// Load JSON data from file $json_data = file_get_contents("users.json"); // Decode JSON data into array $user_data = json_decode($json_data, true); // Define user ID to retrieve $user_id = 123; // Find user data by ID in array $user = null; foreach ($user_data as $u) { if ($u['id'] == $user_id) { $user = $u; break; } } // Print user data echo "User ID: " . $user['id'] . "The package or library for the getByid method will depend on the specific data source being used. For example, if querying a MySQL database, the mysqli or PDO libraries can be used. If working with JSON data, the built-in JSON functions in PHP can be used.
"; echo "Username: " . $user['username'] . "
"; echo "Email: " . $user['email'] . "
";