create-csv-file.php

<?php

$file_name = "data.csv";

header("Content-Description: File Transfer");
header("Content-Disposition: attachment; filename=$file_name");
header("Content-Type: application/csv");

$file = fopen('php://output', 'w');

$header = array(
	"ID", "NAME", "SURNAME", "JOB"
);

fputcsv($file, $header);

$data = array(
	array(1, "Test 1", "1", "Computer Engineer1"),
	array(2, "Test 2", "2", "Computer Engineer2"),
	array(3, "Test 3", "3", "Computer Engineer3"),
	array(4, "Test 4", "4", "Computer Engineer4"),
	array(5, "Test 5", "5", "Computer Engineer5"),
	array(6, "Test 6", "6", "Computer Engineer6"),
);

foreach ( $data AS $item ){
	fputcsv($file, $item);
}

fclose($file);
exit;