$_SESSION variable not passing and no clue why? it sets then doesn't pass

Question

I have a login script coded in php and mysqli. upon submission and successful authentication it redirects to success.php to write sessions. my success page looks like this.

Answer 1

Use session_start(); inside all page before using $_SESSION variable in PHP. session_start(); function use to initialize session process.

your success.php should be.

");

}

else {
    print "Session partner id not set";
}

?>