How can I clear my php session data correctly?

Question

My php website flows like this:

• Page1.php has an html form which POSTs to Page2.php
• Page2.php stores all the POST data into SESSION variables and has

Answer 1

Only use session_unset() for older deprecated code that does not use $_SESSION.

see session_destroy manual

example you can try and see how it works

session.php

1,'session2'=>2);

echo $_SESSION['session1']; //1
$_SESSION['session1'] = 3;
echo "
";
print_r($_SESSION); //session one now updated to 3
echo "
";


$_SESSION = array();
if ($_SESSION['session1']) {
 echo $_SESSION['session1']; //  IS NOW EMPTY
} else {
 echo "woops... nothing found";
}
?>

NOW GOING TO DESTROYED PHP

destroyed.php