validar_usuario.php
Código PHP:
<?php
if (strlen($_POST['logout']) > 0)
{
session_destroy();
}
ob_start();
$host="localhost"; // Host name
$username=" "; // Mysql username
$password=" "; // Mysql password
$db_name=" "; // Database name
$tbl_name=" "; // Table name
// Connect to server and select databse.
mysql_connect($host, $username, $password)or die("cannot connect");
mysql_select_db($db_name)or die("cannot select DB");
// Define $myusername and $mypassword
$myusername=$_POST['username'];
$mypassword=$_POST['password'];
if (strlen($myusername) > 0 || strlen($mypassword) > 0)
{
// To protect MySQL injection (more detail about MySQL injection)
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
if (mysql_num_rows(mysql_query("SELECT * FROM `$tbl_name` WHERE `usuario` = '$myusername' AND `password` = '$mypassword'"))==1)
{
ingresa el usuario
}
else
{
si esta mal el muestro algo
}
}
//ob_end_flush();
?>
y este es el archivo logout.php
Código PHP:
<?php
session_start();
session_destroy();
echo 'Ha terminado la session <p><a href="index.php">Principal</a></p>';
?>
<SCRIPT LANGUAGE="javascript">
location.href = "index.php";
</SCRIPT>