// these files should be put in a directory named 'inc' inc/auth.php // the meat and potatoes of this subject inc/connect.php // an excellent connection script inc/nav.php // navigation include for site // these files should be on the web root index.php // main page of site link_1.php // page of site link_2.php // page of site link_3.php // page of site logout.php // destroy session and re-direct to login
CREATE TABLE users ( user_id int(10) unsigned NOT NULL auto_increment, username varchar(20) NOT NULL default '', password varchar(20) NOT NULL default '', PRIMARY KEY (user_id) ) TYPE=MyISAM;
<?
// start session
session_start();
// convert username and password from _POST or _SESSION
if($_POST){
$_SESSION['username']=$_POST["username"];
$_SESSION['password']=$_POST["password"];
}
// query for a user/pass match
$result=mysql_query("select * from users
where username='" . $_SESSION['username'] . "' and password='" . $_SESSION['password'] . "'");
// retrieve number of rows resulted
$num=mysql_num_rows($result);
// print login form and exit if failed.
if($num < 1){
echo "You are not authenticated. Please login.
<form method=POST action=index.php>
username: <input type=text name=\"username\">
password: <input type=password name=\"password\">
<input type=submit>
</form>";
exit;
}
?>
<?
// replace with your db info
$hostname="localhost";
$mysql_login="myusername";
$mysql_password="mypass";
$database="test";
if (!($db = mysql_connect($hostname, $mysql_login , $mysql_password))){
die("Can't connect to mysql.");
}else{
if (!(mysql_select_db("$database",$db))) {
die("Can't connect to db.");
}
}
?>
<?php // you must start session before destroying it session_start(); session_destroy(); echo "You have been successfully logged out. You will now be returned to the login page. <META HTTP-EQUIV=\"refresh\" content=\"2; URL=index.php\"> "; ?>
[url="index.php>Home</a>"]link_1[/url] | [url="link_2.php>link_2</a>"]link_3[/url] | <a href=logout.php>logout</a>
<?
// connect to database
include("inc/connect.php");
// include auth and nav
include("inc/auth.php");
// begin content
include("inc/nav.php");
echo "This is my home page.";
// close mysql connection
mysql_close();
?>
<?
// connect to database
include("inc/connect.php");
// include auth and nav
include("inc/auth.php");
// begin content
include("inc/nav.php");
echo "This is my Link 1.";
// close mysql connection
mysql_close();
?>
<?
// connect to database
include("inc/connect.php");
// include auth and nav
include("inc/auth.php");
// begin content
include("inc/nav.php");
echo "This is my Link 2.";
// close mysql connection
mysql_close();
?>
<?
// connect to database
include("inc/connect.php");
// include auth and nav
include("inc/auth.php");
// begin content
include("inc/nav.php");
echo "This is my Link 3.";
// close mysql connection
mysql_close();
?>
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