want to stop stripping out from my post content

I’m only guessing but it sounds like your insert method is tripping up on one of WordPress’s filter functions (e.g. wp_filter_kses). If you need a more exact answer, please update your question to include some of the code you’re using to insert the post content.

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