laravel excel当我做getcell时如何移除子弹

Question

Excel::load($path, function($reader) {

    $sheet = $reader->getSheetByName('nameofsheet');

    $cellvalue = $sheet->getCell('B10'); //cell with a bullet (bullet and text of cell)

    $echo $cellvalue;  //display (Ÿ text of cell) display Ÿ instead of bullet and i don't want this character


});