Omeka Database Error

Unknown MySQL server host '“localhost”' (0).
Confirm that the information in your db.ini file is correct.
What means error (0) ?
My db.ini now is correct and revised by my hosting but omeka dont works
Can someone help me?

That error looks like the host information in db.ini file still isn't quite correct. Usually it is localhost, but your hosting company might have something else set up.

Was this through a one-click installer? sometimes those have trouble getting the configuration correct.