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<?php include 'db.php'; $firstname = mysqli_real_escape_string($db, $_POST['name']); $query ="SELECT * FROM p391 WHERE name1= '$firstname' group by name2"; $results = $db->query($query); ?> <option value="" hidden>Select </option> <?php while($rs=$results->fetch_assoc()) { ?> <option value="<?php echo htmlspecialchars($rs["name2"]); ?>"><?php echo htmlspecialchars($rs["name2"]); ?></option> <?php } ?>