Run query on specific admin options page and send results to select field in another function

If I’ve understood this correctly, the answer is a simple one.

If these are both in the same class, set a property on your class for storing the output of the first function that runs. From there, any subsequent functions can access the data stored on that property.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)