mpdf - Can't write my table to PDF using WriteHTML in codeigniter -

im trying print table pdf using mpdf library in codeigniter, can't data i'm using mpdf library. when echo $table, can see/preview it, when write pdf, no data appears. can me? in advance..

          $mpdf = new mpdf('',    // mode - default ''                      '',    // format - a4, example, default ''                      7,     // font size - default 0                     'arial',    // default font family                     10,    // margin_left                     10,    // margin right                       5,     // margin top                     5,    // margin bottom                     2,     // margin header                      2,     // margin footer1                       'l');  // l - landscape, p - portrait    $mpdf->setdisplaymode('fullpage');       $mpdf->writehtml($table);          $mpdf->output();  

look whitespaces before <?php , after ?> (if exists) , remove them.

if not work, post more php code please.