使用多个选择选项在下拉列表中检索SQL数据库值并发布值

Question

I have retrieved the database values in dropdown list with multiple select option using PHP MySQL. My code is as follows.

$sql = "SELECT student_id, name, phone FROM student";
$result = $conn->query($sql);

if ($result->num_rows > 0) {

    echo "<select name='num' multiple >";
    while($row = $result->fetch_assoc()) {
       echo "<option value='" . "'>" . $row['name']. " " . $row['phone_number'] ."</option>";
    }
    echo "</select>";




} else {
    echo "0 results";
}

What I need is, I want to post the multiple selected phone_number values to another page. Also, Is it possible to create a checkbox before the list values?

Answer 1

Change this line to :

echo "<select name='num[]' multiple >";

name should be in array format like num[] not like num