i am developing a php app. in the beginning of every file there is a require_once("./setup.php"); that does the housekeeping, fetches the connection credentials and connects to the database. All that worked fine until this morning I made a new file.

Now I get a connection failure when I try to connect but ONLY from this one php file. I can connect to the server fine manually, the server is not unduly loaded, all the other apps that use this db server are fine and even the other files in THIS app using THIS particular db seem to be connecting fine. Well actually I should say that one of the other files *did* get this error once but on a subsequent call it corrected itself. I should also say that the "bad" file did connect fine the first time I ran it but I haven't been able to make it do it since. Is it possible that the bad new file is doing something bad that boggles subsequent connections? If so what?

It is using exactly the same include file that works in all the other files. I'm stumped Thank you...