Wordpress converting array to csv for download - php

Question

I have the following function that takes an array of results from a database query. I populate the array as I loop through the query results. At the same time I create an html table. After outputting the html table I call the function download_csv($csvArray) but no downloading of the CSV happens, It just displays the contents of the the array as if I did a var_dump on the array. I can confirm that the contents of the array are correct.
Note: this is being done on an external web page not from the admin area.
Is there some wordpress function that needs to be called to allow the download or am I missing something?
function download_csv($csvArray) {
$file_name = 'report.csv';
//output headers so that the file is downloaded rather than displayed
header("Content-Type: text/csv");
header("Content-Disposition: attachment; filename=$file_name");
//Disable caching - HTTP 1.1
header("Cache-Control: no-cache, no-store, must-revalidate");
//Disable caching - HTTP 1.0
header("Pragma: no-cache");
//Disable caching - Proxies
header("Expires: 0");
//Start the ouput
$output = fopen("php://output", "w");
//Then loop through the rows
foreach ($csvArray as $fields) {
fputcsv($output, $fields);
}
//Close the stream off
fclose($output);
die();
}

Answer 1

Following Code will help you to convert Array to CSV and Make it to automatically download Change the die(); function to exit(); And Use Implode function. It will work.
header('Content-Type: text/csv; charset=UTF-8');
header('Content-Disposition: attachment; filename=sample.csv');
header('Pragma: no-cache');
header('Expires: 0');
$fp = fopen('php://output', 'w');
//ex: $list={...};
foreach ($list as $fields)
{
fputcsv($fp,implode($fields, ','));
}
fclose($fp);
exit();