PHP Script: Grab WP MYSQL field content - deliver as iframecntent for other URL

We are publishing our news via Wordpress.. Some of our customers want our news to be embedded in their websites, via an iframe So we need a PHP script which - accesses regularly the relevant MySQL database with WP content - selects all WP posts with certain tags or categories - selects relevant field content (post title, content, author, picture, date of publishing) - transfer these content to a list of articles to be displayed - transfer this content to single articles to be displayed Script should enable us to - start it on a URL,pwd protected - input width of new url to make it in the iframe seize the customer needs - input the CSS info/URL vers output according to customers design needs - give the customer just an url he can embed into his page as iframe Job is urgent. similar projects (website, database to WP script) to follow.