Access denied

[bweekly]

What causes this PHP/MySQL error?

Access denied for user: 'httpd@localhost' (Using password: NO)

I have placed a few php includes inside another php document, basically calling an application from inside another application. Both make db calls and both work fine on their own. Both use usernames and passwords in their queries. But when one is placed inside the other, I get this error. Why? How does one get around it?

[planetsim]

Well its hard to say for sure. Invalid password, if your using a variable with the password defined its been overwritten. Without any code to go off people can only guess.