<b>MySQL server error report:Array
(
    [0] => Array
        (
            [message] => MySQL Query Error
        )

    [1] => Array
        (
            [sql] => SELECT a.*,b.cat_name FROM tblcourse AS a LEFT JOIN tblcategory AS b ON a.cat_id = b.id WHERE a.id=www 
        )

    [2] => Array
        (
            [error] => Unknown column 'www' in 'where clause'
        )

    [3] => Array
        (
            [errno] => 1054
        )

)