Issues with exporting a csv file - php

Question

I'm creating a function that, when you click on a button, submits datas to a this function and in return, creates a .csv file and makes the browser download it. I followed the huge amount of tutorials that can be found online, but maybe I'm mixing up things:
header("Content-Type: application/x-excel");
header("Content-disposition: attachment; filename=export".date('d-m-Y') .".csv");
header('Expires : 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
$list = array
(
"Peter,Griffin,Oslo,Norway",
"Glenn,Quagmire,Oslo,Norway",
);
$file = fopen("contacts.csv","w");
foreach ($list as $line) {
fputcsv($file,explode(',',$line));
}
die($file);
readfile($file);
Just keep in mind that these aren't my real datas, I just want to set everything up before continuing, because I have 50 lines of an array to handle.
With this code, If I keep die($file), the file gets downloaded but is empty. If I remove it, my browser tells me that the website is unavailable.
What am I missing?

Answer 1

try this
header('Content-Type: application/excel');
header('Content-Disposition: attachment; filename="sample.csv"');
$data = array(
"Peter,Griffin,Oslo,Norway",
"Glenn,Quagmire,Oslo,Norway",
);
$fp = fopen('php://output', 'w');
foreach ( $data as $line ) {
$val = explode(",", $line);
fputcsv($fp, $val);
}
fclose($fp);