Untitled

FICHERO LAYOUT:

<?php
include('Clases/session_class.php');
$sess = new sessions();

error_reporting(E_ALL);
ini_set('display_errors','On');

	echo '
	<html>
	<title>
	AMBU-Gestión
	</title>
	<head>
	Bienvenido, ';
	if ($sess.sessions::get_var("SNAME")=="")
		echo "Anónimo";
	else
		echo $sess.sessions::get_var("SNAME");

	echo'<br>
	</head>
	<body>
	<center><FONT FACE="arial"><b>Formulario de inicio de sesión</b><p></font>
	<table><form action="funcs.php" method=post>
	<tr><row>Nombre de usuario</row><row><input type=text name="user" /></row></tr>
	<tr><row>Contraseña</row><row><input type=password name="pass" /></row></tr>
	<tr><row><br></row><row><input type=submit /></row></tr>
	</table>
	<input type="hidden" name="accion" value="login" /></form>
	</center>
	</body>
	</html>';
?>

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FICHERO FUNCIONES:
<?php
include "Clases/session_class.php";
$sess = new sessions();
include "Clases/cronometro.php";

error_reporting(E_ALL);
ini_set('display_errors','On');

/*	######################################################
 * 			CRONÓMETRO DE SCRIPT
 */	######################################################
$casio = new cronometro();
for ($i = 1 ; $i <= 10000 ; $i++)
{
   // hacer nada
}
echo "según mi reloj, este script se demoró " . $casio->stop(true, 2) . " segundos en su ejecucion<br>";

/*
 * 	SE CREA U OBTIENE UNA NUEVA INSTANCIA DE LA CLASE SESSION.
 */


/*	######################################################
 * 			MÁNAGER DE LAS VARIABLES RECOGIDAS
 */	######################################################

switch ($_POST["accion"])
{
	case "login":
		LogIn($_POST["user"], $_POST["pass"]);
		break;
}


/*	######################################################
 * 				CONEXIÓN A LA BASE DE DATOS
 */	######################################################

function Conectar()
{
   if (!($link=mysql_connect("localhost","root","454850")))
   {
      echo "Error conectando a la base de datos.";
      exit();
   }
   if (!mysql_select_db("ambu",$link))
   {
      echo "Error seleccionando la base de datos.";
      exit();
   }
   return $link;
}


/*	######################################################
 * 				FUNCION DE INICIO DE SESIÓN
 */	######################################################

function LogIn($user, $pass)
{
		$link=Conectar();
		$query=mysql_query("SELECT * FROM user WHERE username='".$user."'", $link);
		if(!$query) die('Invalid query: ' . mysql_error());
		while($row = mysql_fetch_array($query))
		{
			$row_user=$row["username"];
			$row_password=$row["password"];
			$row_access=$row['access'];
		}
		if ($row_password==$pass)
		{
			$sess.sessions::set_var("SNAME", $row_user);
			$sess.sessions::set_var("SLEVEL", $row_access);
			echo $sess->$sess.sessions::get_var("SNAME")." / Access Level: ".$sess.sessions::get_var("SLEVEL");
			echo '<br /><a href="start.php">Volver</a>';
		} else {
			echo "Contraseña incorrecta ";
		}
}
?>

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FICHERO CLASE:
<?php
$sess = new sessions();
class sessions {
/**********************************************
**
** Beginner's session handling class
**
** Author..: leapinglangoor [ leapinglangoor@yahoo.co.in ]
** Date....: 30th May 2005
** Ver.....: v1.00
**
** Desc....: This is a beginner's class to use sessions.
** This is meant more for for educational purposes rather
** than implimentation. There should be no problems using this.
**


**********************************************/

    /*****************************
    ** func - sessions()
    ** @Constructor
    ** @Access - public
    ** @Desc - The cunstructor used for warming up
    ** and preparing the sessions.
    ** @params - None
    *****************************/
    function sessions()
    {
        // Let's initialise the sessions
        session_start();
    }


    /*****************************
    ** func - set_var()
    ** @Access - public
    ** @Desc - Set a session variable
    ** @param $var_name - the variable name
    ** @paran $var_val  - value for $$var_name
    *****************************/
    function set_var( $var_name, $var_val )
    {
        if( !$var_name || !$var_val )
        {
            return false;
        }
        $_SESSION[$var_name] = $var_val;
    }


    /*****************************
    ** func - get_var()
    ** @Access - public
    ** @Desc - Get a session variable
    ** @param $var_name -  the variable name to be retrieved
    *****************************/
    function get_var( $var_name )
    {
        return $_SESSION[$var_name];
    }


    /*****************************
    ** func - delete_var()
    ** @Access - public
    ** @Desc - Delete a session variable
    ** @param $var_name -  the variable name to be deleted
    *****************************/
    function del_var( $var_name )
    {
        unset( $_SESSION[$var_name] );
    }


    /*****************************
    ** func - delete_vars()
    ** @Access - public
    ** @Desc - Delete session variables contained in an array
    ** @param $arr -  Array of the elements
    ** to be deleted
    *****************************/
    function del_vars( $arr )
    {
        if( !is_array( $arr ) )
        {
            return false;
        }
        foreach( $arr as $element )
        {
            unset( $_SESSION[$element] );
        }
        return true;
    }


    /*****************************
    ** func - delete_all_vars()
    ** @Access - public
    ** @Desc - Delete all session variables
    ** @params - None
    *****************************/
    function del_all_vars()
    {
        del_all_vars();
    }


    /*****************************
    ** func - end_session()
    ** @Access - public
    ** @Desc - Des! ! troy the session
    ** @params - None
    *****************************/
    function end_session()
    {
        $_SESSION = array();
        session_destroy();
    }

}// End class sessions
?>