[SOLVED] Warning: session_start(): Cannot start session when headers already sent: 000webhost.com

[SOLVED] Warning: session_start(): Cannot start session when headers already sent: 000webhost.com
session_start() cannot start session when headers already sent. How to fix headers already sent, cannot modify header information. 000webhost Database Connection

All these fix are done right here. Just follow the video closely. For any concern, reach me out on the comment section. Thanks for watching and don't forget to SUBSCRIBE, LIKE AND SHARE this video.

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Today I encountered this warning message:
"Warning: session start: Cannot start session when headers already sent in /storage/ssd3/417/10667417/public_html/functions.php on line 3"
Well, functions.php is where all my php functions are and am starting session on line 3, that's why it was able to report line 3.
If you can't start session, then literally in php, it means you can not log in.
Thus, the steps shown in the video is the way to go, that is, navigate to your 000webhostapp manager site, then click on Tools then File Manager, then Upload files.
Under public_html directory, select the file .htacess, open it and add this line of code below the php_value display_errors
Code: "php_flag output_buffering on"
Click on the button save & close. There you are good to go, your freely hosted website is up and running.

Also, when at any time, you happen again to encounter this warning message...
"Warning: Cannot modify header information - headers already sent by (output started at /something) in /something/something.php on line something"
Just navigate to where your php file where you are making connection to the database. In most cases it will be a function file.
Add this line of code just right after the start tag of php.
Code: "ob_start()", that will prevent the headers from being sent prematurely, I mean sending the header info earlier.

Thanks for watching and catch up later.