如何使用php读取csv文件的特定列

Question

i'm using the code below to show a csv file as html table with php. My issue is how to show only specific columns of the csv file. For example I'd show the columns number 1,5,9,15. How can be modified the code to select that specific fields?

Thanks in advance, Mattew

 <?php
 $row = 1;
 if (($handle = fopen("donors.csv", "r")) !== FALSE) {
      while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
    $num = count($data);
    if ($row == 1) {
        echo '<tr>';
    }else{
        echo '<tr>';
    }

    for ($c=0; $c < $num; $c++) {

        if(empty($data[$c])) {
           $value = "&nbsp;";
        }else{
           $value = $data[$c];
        }
        if ($row == 1) {

             echo '<td style="border-top: 1px solid rgb(111,180,224); border-left: 1px solid rgb(111,180,224); border-bottom: 1px solid rgb(111,180,224);"  align="left" bgcolor="#0066cc" height="36" valign="middle" ><b><font color="#ffffff" size="2">&nbsp;&nbsp;'.$value.'&nbsp;&nbsp;</font></b></td>';
        }else{


            echo '<td style=" border-bottom: 1px solid rgb(111,180,224);" sdval="9" sdnum="1040;" align="left" bgcolor="#ffffff" height="25"  valign="middle"><font color="#000000" size="2">&nbsp;&nbsp;'.$value.'&nbsp;&nbsp;</font></td>';
        }
    }

    if ($row == 1) {
        echo '</tr>';
    }else{
        echo '</tr>';
    }
    $row++;
   }

  echo '</tbody></table>';
echo '</center>';   
    fclose($handle);
 }
 ?>

Answer 1

// before your while loop 
$wantedColumns = array(1,5,9,15);

// ...

for ($c=0; $c < $num; $c++) {
   if (!in_array($c,$wantedColumns)) continue;
   // ....