Session full Tutorial (iii) _php

Third, the session application example

The following example snippets are for reference only, you can customize or you can not customize the session, as you
(1) for user authentication
Session_Start ();
$DBH = mysql_connect ("localhost:3306", "xxxx", "xxxx");
mysql_select_db ("Znsoft");//Select Database
$query = "Select UserID from Reguser where userid= ' $userid ' and pass= ' $pass '";
$userid $pass is the user name and password passed in by login form.
$res =mysql_query ($query, $DBH);
if ($row =mysql_fetch ($res))
{
$reguser = $row [0];
?>

}
Else
{
$reguser = "";
?>

You put the code on your own.
}
Session_register ("Reguser");
?>
Check whether you are logged in on another page
================
Session_Start ();

if (Isset ($reguser) && $reguser! = "")//already logged in
{
echo "Welcome, man";
}
else//not logged in!
echo "Please register";
?>
Exit function
===============================
Session_destroy ();
or $reguser = "";
?>

(2) for passing variables

This program is used to pass variables between pages
$name = "M.y";
if (!sesion_is_registered ("name"))//not register session variable name
Session_register ("name");//Register variable name
?>
Second page
===================
Echo $name;

Don't want to use it, delete it.
if (session_is_registered ("name"))//whether registered, if already registered
Session_unregister ("name");//Of course it's deleted.
?>

<全文完>

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