<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "estudi";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT * FROM `codes` order by categoria asc";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) { 
?> 

<!-- element que vull repetir -->
<?php echo "$row[nom]";?>

<?php }
} else {
echo "0 results";
}
$conn->close();
?>