php - Make multiple files to force-download

Question

Sorry if the title doesn't explain much. Let me try to explain further.

I have code that looks like this:

<?
//Grab the number in count.txt
$count = intval(file_get_contents('count.txt'));
//Move the number up one
file_put_contents('count.txt', ++$count);
$number = file_get_contents('count.txt');
//Force Download
header('Content-Disposition: attachment; filename=DataFiles'.$number.".csv");
header('Content-Type: application/octet-stream');

//The data

foreach($array as $info){
echo $info."
";
}
?>

With $array being an array of data.

Now sometimes the amount of data can be more than 5000, so if the data is over 5000, make another file for every 5000 data that is being echoed. Ea: If there is 20,000 pieces of data in the $array, then it will make a total of 4 files.

Answer 1

Here you are how to download multiple files... The tricks is rendering many iframe in same page. Every frame has different source that force download different files

<?php
for($i = 0; $i<5; $i++){
    echo '<iframe src="test_multiple_downfile.php?text='.$i.'">/iframe>';
}
?>

test_multiple_downfile.php content is this:

$out = $_GET['text'];
header("Content-Type: plain/text");
header("Content-Disposition: Attachment; filename=testfile_".$out.".txt");
header("Pragma: no-cache");
echo "$out";