$username = "john_doe"; $result = mysqli_query($conn, "SELECT * FROM users WHERE username='$username'");
$email = "john_doe@example.com"; $result = mysqli_query($conn, "SELECT * FROM users WHERE email='$email'");
$name = "john"; $result = mysqli_query($conn, "SELECT * FROM users WHERE full_name LIKE '%$name%'");The PHP app User Find likely uses a database library such as mysqli or PDO to connect to the database and execute queries. It may also use a frontend framework such as Bootstrap to display search results in a user-friendly format.