How to Modify Existing Rewrite Rules?

Wow I feel like a huge newblet. This is incredibly simple. Just escape it with a \.

"&feed=$matches[1]" should be "&feed=\$matches[1]".

EASY.

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