如何只回显一个值，值是多个[PHP]

im trying to display only one value of my database if the value is duplicate/multiple or have the same value in another row

example database

id | name | section
1  | ron  | ABC
2  | mark | B12
3  | nick | B12

this my php code:

$sql = "SELECT * FROM myusers";
$result = mysqli_query($conn, $sql);    
while($rows = mysqli_fetch_array($result))
{
    echo "$rows['section']"; 
}

Output : ABC B12 B12

i want output like this ABC B12

Since you're only using one column, just select that column. Then if you apply the DISTINCT keyword there will be no duplicates:

$sql = "SELECT DISTINCT `section` FROM `myusers`";

You would need to use the DISTINCT parameter in your Queen. Here is an article with how to: https://www.dofactory.com/sql/select-distinct

Try this

$sql = "SELECT * FROM myusers GROUP BY section";