CODEWITHSUNDEEP
phpheaderhttp-headersexport-to-csvresponse-headers
Nikita Karpenko
Nikita Karpenko

Reputation: 21

PHP; Export CSV to output buffer: Loaded File is empty. Why?

File resource - fopen('php://output')

Header list: 

Content-Type: application/csv
Content-Disposition: attachment; filename="test.csv"
Cache-Control: max-age=0
Expires: 0
Cache-Control: must-revalidate
Pragma: public

How i download:

ob_clean();
readfile("php://output");
exit;

ob_get_contents() before readfile is not empty and data which i write to file too.

But loaded file is empty. Why

Upvotes: 1

Views: 324

Answers (1)

KIKO Software
KIKO Software

Reputation: 16741

https://www.php.net/manual/en/wrappers.php.php#wrappers.php.output

Says:

php://output is a write-only stream that allows you to write to the output buffer mechanism in the same way as print and echo.

You're trying to read from it, which clearly cannot be done.

It is unclear to me what you're actually trying to achieve.

Upvotes: 1

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