<?php
if(!empty($_FILES["marks_file"]["name"]))
{
  $connect = mysqli_connect("localhost", "root", "", "dbname");
  $output = '';
  $allowed_ext = array("csv");
  $extension = end(explode(".", $_FILES["marks_file"]["name"]));
  if(in_array($extension, $allowed_ext))
  {
       $file_data = fopen($_FILES["marks_file"]["tmp_name"], 'r');
       fgetcsv($file_data);
       while($row = fgetcsv($file_data))
       {
            $name = mysqli_real_escape_string($connect, $row[0]);
            $Physics = mysqli_real_escape_string($connect, $row[1]);
            $Maths = mysqli_real_escape_string($connect, $row[2]);
            $Chemistry = mysqli_real_escape_string($connect, $row[3]);
            $Biology = mysqli_real_escape_string($connect, $row[4]);
            $SST = mysqli_real_escape_string($connect, $row[5]);
            $query = "
            INSERT INTO csv
                 (name, Physics, Maths, Chemistry, Biology, SST)
                 VALUES ('$name', '$Physics', '$Maths', '$Chemistry', '$Biology' , '$SST')
            ";
            mysqli_query($connect, $query);
       }
       $select = "SELECT * FROM csv ORDER BY id DESC";
       $result = mysqli_query($connect, $select);
       $output .= '
       <table class="table table-bordered">
           <tr>
               <th width="25%" >name</th>
               <th width="15%" >Physics</th>
               <th width="15%" >Maths</th>
               <th width="15%" >Chemistry</th>
               <th width="15%" >Biology</th>
               <th width="15%" >SST</th>
           </tr>
       ';
       while($row = mysqli_fetch_array($result))
       {
            $output .= '
                 <tr>
                      <td>'.$row["name"].'</td>
                      <td>'.$row["Physics"].'</td>
                      <td>'.$row["Maths"].'</td>
                      <td>'.$row["Chemistry"].'</td>
                      <td>'.$row["Biology"].'</td>
                      <td>'.$row["SST"].'</td>
                 </tr>
            ';
       }
       $output .= '</table>';
       echo $output;
  }
  else
  {
       echo 'errorx';
  }
 }
  else
{
     echo "errory";
}
 ?>

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,,,Fields,Physics~75,Maths~50,Chemistry~65,Bio~85,SST~100
,,,Name1,10,25,35,42,62
,,,Name2,80,45,45,45,25
,,,Name3,63,25,63,36,36
,,,Name4,82,36,75,48,42
,,,Name5,45,45,78,25,24
,,,Name6,36,36,15,75,36
,,,Name7,99,45,24,24,45
,,,Name8,45,85,85,85,96