PHP error happened

Technical information
Error type2
Error descriptionmysql_connect() [function.mysql-connect]: Access denied for user 'webuser'@'H-WEB' (using password: YES)
URLwww.hehs.d211.org/generalinfo/alumni/database/_data_list.php?
Error fileD:\MainWebSite\generalinfo\alumni\database\include\dbconnection.php
Error line9
SQL query