How can I solve ,,PHP Warning: session_start(): Cannot start session when headers already sent"?

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How can I solve ,,PHP Warning: session_start(): Cannot start session when headers already sent"?

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Undefined answered · Answer 1 · 2022-02-8

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Solution:

You should put yoursession_start() at very beginning of scripts

config.php

<?php
session_start();

// do your other code here

in your subviews like index you should put the config.php in the very beginning of line or make a separate php file likesession.php and include it on very beginning of scripts.

The cause of error is that session is trying to start but the page is already sent to the browser or rendered.

or maybe you have a whitespace in opening tag?

Undefined answered · Answer 2 · 2022-02-8

Answer

Solution:

Session start should be placed at the top of the script. And don't repeat. To avoid errors, Just put a '@' before session_start command. Example

@session_start();

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