header too long HTTP_MIME_TOO_LONG

[wayneforrest]

I am receiving an error when I call my php file, from an external application:

I think that there is some kind of limit in the amount of data that can fit
into the header.

is there perhaps a header setting or better way,
preferably I do not want the data to be returned via the content.

Google does not seem to have answers either. :glare:

<?php
session_start();
header("SQL_RESULTS: SQL_RESULTS=$alist");
?>

Thanking you.

[johanafm]

Headers are supposed to be used for meta data about requests and responses, so string length really should not be a problem.

As for an actual limit, the http specification does not impose any. But the error message, wherever that comes from, seems to indicate MIME headers which I don't remember much about. It would not surprise me if they actually have a length limit of 76 bytes, or of 76 bytes per line.
Http headers can be split over several lines with CRLF followed by SP or HT, and while I'd suspect the same goes for MIME headers I'd check out the MIME specification myself if I were you. RFC2616 should contain an URL to the MIME spec.