echo ini_get('session.use_trans_sid'); // echo value of session.use_trans_sid ini setting
echo '-'; // echo a spacer

ini_set('session.use_trans_sid', '0'); // try setting session.use_trans_sid to '0' (doesn't work)

echo ini_get('session.use_trans_sid'); // echo value of session.use_trans_sid ini setting

// Output: "1-1"