Session full Tutorial (iii) _php tutorial

Source: Internet
Author: User
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 = "selectuseridfromreguserwhereuserid= ' $userid ' andpass= ' $pass '";
$userid $pass is the user name and password passed in from the login form.
$res =mysql_query ($query, $DBH);
if ($row =mysql_fetch ($res))
$reguser = $row [0];

$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

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.
?> true techarticle Third, the session application examples of the following examples are for reference, you can customize or do not customize the session, as you will (1) for user authentication? Session_Start (); $dbh =mysql_connect (Localh ...

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