getValue return NULL instead array

[itajackass]

Hi, with this code:

$logins = $db->getValue ("users", "login", 5);
// select login from users limit 5
foreach ($logins as $login)
    echo $login;

All is ok if results found. But if NO RESULT FOUND, we get error:

 Warning: foreach() argument must be of type array|object, null given

[abasnet]

Use is_array before doing foreach