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testing single page protect by php protection method with a MYSQL CRUD extension in a WAMP server localhost.
this comes on the top

The extension cannot detect that session_start is already on the page. So, it may be added twice.
But I think you should be able to disable this warning in the php.ini configuration

how to solve it using the php.ini configuration anything I need to copy paste or change the values to, or Is there any solution to this other than this?

I think you will need to reduce the warning level.
https://www.php.net/manual/en/errorfunc ... ration.php