"headers already sent" when file get too long

TheBeginner

So I have a file with both php and html.

Nothing wrong. No blanks in the begining or at the end.

If I enter too much text of any sort into this file, upload it, I get "headers already sent ...." message and error. Decreasing the amount of text works fine.

I even replaced all text with "lorem ipsum" to see if the lenght of the text matters and yes it does!

What is wrong with php in this case???

TheBeginner

Just one thing. This happens for a file that I include in the script.

Weedpacket

What is on the lines cited in the error message?

TheBeginner

This is the error

PHP Warning: Cannot modify header information - headers already sent by (output started at \wwwroot\wp-content\themes\ghghgh\toggle.php:6) in \wwwroot\wp-content\themes\ghghgh\loggain.php on line 282

Weedpacket

And what is on the lines cited in the error message?

TheBeginner

Nothing just regular "lorem ipsum" text. Nothing that could couse problems.

ivan7

i think, its about sesion start

<?php session_start(); ?>

u must put at the first line in script

bradgrafelman

ivan7 wrote:
u must put at the first line in script

Not really; you just have to call such functions that modify the HTTP headers before anything is outputted (causing the headers to be sent to the user).

TheBeginniner: Can you post or attach an example script that causes this error?

Weedpacket

TheBeginner wrote:
Nothing just regular "lorem ipsum" text. Nothing that could couse problems.

What? Both of them?

It sounds like you're producing output before you send all your headers - that's what the error message is complaining about, after all - but in php.ini you've got output buffering turned on and set to something large enough that until now you haven't noticed that that is what you were doing.