PHP PDO retrieves duplicate data

Question

I have this situation with PHP (PDO);

I\'m implementing a method that retrieves data from MySql and does it well, but the problem is that duplicate data recovered as

Answer 1

change pdo attribute accoding to requirment. . .

 $dbConnection = new PDO( 'pgsql:host=' . $host . ';dbname=' . $database, $username, 
 $password, );

 $dbConnection->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);

set / change PDO attribute more detail here