There are several method for transferring data from page to page
Transfer variables through URL
nextpage.php?var1=qwe123&var2=zxc
Transfer variable from FORM with post method (HTML)
<form name="logout" action="logout.php" method="post">
<input type="submit" name="submit" value="LOGOUT">
<input type="hidden" name="var1" value="qwe123">
<input type="hidden" name="var2" value="zxc">
</form>
- Register session variable
---------
<? //firstpage.php
session_start();
session_register("var1_session");
session_register("var2_session");
$var1_session="qwe123";
$var2_session="zxc";
?>
---------
<?//nextpage.php
session_register("var1_session");
session_register("var2_session");
echo $var1_session;
echo $var2_session;
session_destroy();//optional (may be in logout.php)
?>