Cannot modify header information - headers already sent by (Code is attached)

Question

Why this error is happening? Code is as follows:

<?php
header('Cache-Control:no-cache,must-revalidate,max-age=0');     
?>

I also feel that you're not including full code. In either case, consult the duplicate the question was closed with. — Funk Forty Niner, Aug 16 '17 at 20:35

score 0 · Answer 1 · answered Aug 16 '17 at 20:32

0

You can try following:

<?php

header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
?>

Note that the exact headers used will depend on your needs (and if you need to support HTTP 1.0 and/or HTTP 1.1)

answered Aug 16 '17 at 20:32

Jayveer Parmar

500
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1

jParmar still same error. – tassawar Aug 16 '17 at 20:55
please specify the exact error. You can post other code if it's relevant – Jayveer Parmar Aug 16 '17 at 21:06

Cannot modify header information - headers already sent by (Code is attached)

1 Answers1