}
else{
  $students=$repObj->getStudentsByCourse($selected_values[0]);
}
$resultArr=$repObj->getGradeByActivity($students,$selected_values[0],
   $selected_values[1],$selected_values[2],$rank);

  }
  else {
         $resultArr=html_writer::tag("h1","No Results Found");
             }
             return $resultArr;
}

$res=reportsBygrade();

$export_data= explode("#", $res);
$data='<style>table {
    margin: 0px;
    padding: 0px;
    width: 100%;
    border: 1px solid #C4BABA;
} 
table tr{
     border-bottom: 2px solid #048AC2;
}
.head {
    background-color: #049CDB;
  
    color: #FFF;
Exemple #2
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$resultArr=$repObj->getGradeBySection($students,$selected_values[0],$selected_values[1],$rank);

  } 

   /*CLIENT SELECTED COURSE<TOPIC AND ACTIVTY*/
  elseif ($selected_values[0]!='0'&&$selected_values[1]!='0'&&$selected_values[2]!='0')
  {

    if(   strcasecmp($grade_type,"submitted")==0||strcasecmp($grade_type,"notsubmitted")==0)
{

  $students=$repObj->getStudentsByCourse($selected_values[0]);
$students=$repObj->studnetsBySubmission($students,$selected_values[0],$selected_values[2],$grade_type);

}
else{
  $students=$repObj->getStudentsByCourse($selected_values[0]);
}
//var_dump($students);

$resultArr=$repObj->getGradeByActivity($students,$selected_values[0],
   $selected_values[1],$selected_values[2],$rank);

  }
  else {
         $resultArr=html_writer::tag("h1","No Results Found");
             }
             return $resultArr;
}
reportsBygrade();