Pulling Twitter RSS feed not working as expected (fatal error)

That tutorial is no longer valid as Twitter’s API have changed June 2013. There are are some great tutorials that came out just after June 2013 for Twitter API v1.1. Why not use a plugin. It is actually better to go that root as these plugin developers keep their plugins up to date and are quick to modify them if someone like twitter change their API

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