MySQL Query Error: Unknown column 'author.php' in 'where clause'

Query: SELECT DATE_FORMAT(MediaLibrary.dtmPubDate, "%W, %M %e, %Y") AS PubDate, DATE_FORMAT(MediaLibrary.dtmEventDate, "%b %e, %Y") as eventDate, MediaLibrary.*, Users.strFirstName, Users.strLastName, Users.strBio FROM MediaLibrary LEFT JOIN Users ON MediaLibrary.intAuthorID = Users.intUserID WHERE intMediaID = author.php AND bitPublish = 1 AND dtmPubDate <= CURDATE() AND (dtmExpDate >= CURDATE() OR dtmExpDate IS NULL)