PHP download script for big files
Today i had a task at one customer where a directory of files needed to be downloaded using a PHP script. For one strange reason the script failed and the browser displayed a File not found error. I couldn’t for a while figure out what was happening. But after some test it was obvious that the file size was too big for the server (90 MB) because with a smaller file size it worked.
So this was the original code:
header("Content-length:".filesize($filename));
header('Content-Type: application/zip'); // ZIP file
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="downloadpackage.zip"');
header('Content-Transfer-Encoding: binary');
readfile($filename);
exit();
After some digging i quickly found the solution, it is : ob_end_clean();
Here is the final code:
header("Content-length:".filesize($filename));
header('Content-Type: application/zip'); // ZIP file
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="downloadpackage.zip"');
header('Content-Transfer-Encoding: binary');
ob_end_clean();
readfile($filename);
exit();
Works like a charm with any file size
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