PHP export csv

<?php

require('assets/php/connect.php');

$query = "SELECT name, fields, here FROM users";
$result = mysql_query($query);

$radioresults = array();
$i = 0;
while($row = mysql_fetch_array($result))
{
    $rawradioresults = $row['radioresults'];
    $radioresults = explode("/",$rawradioresults);

    $added = $row['added'];
    $datestring1 = strtotime($added);
    $added = date( "j F Y g:i a", $datestring1);

    $improvements = $row['improvements'];

    $content[$i] = $row['country'].'|'.$radioresults[0].'|'.$radioresults[1].'|'.$radioresults[2].'|'.$radioresults[3].'|'.$radioresults[4].'|'.$radioresults[5].'|'.$improvements.'|'.$added.'';

    $i++;
}


$file = fopen("evaluationresults.csv", "w");
$x = 0;
foreach ($content as $line) {
  fputcsv($file,explode('|',$line));
 }

fclose($file);
$exported = true;
header('location: evaluationresults.csv');

header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=".$filename);
echo $data;

?>