Pero al momento de intnetar logearme por seguna ves pues cargo bien el menu de los usuarios, pero me aparecio este error:
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home2/oviedosc/public_html/web/SU/men
suario.php:2) in /home2/oviedosc/public_html/web/SU/mensuario.php on line 4Este es mi archivo:
Código PHP:
<?php
//initialize the session
session_start();
// ** Logout the current user. **
$logoutAction = $_SERVER['PHP_SELF']."?doLogout=true";
if ((isset($_SERVER['QUERY_STRING'])) && ($_SERVER['QUERY_STRING'] != "")){
$logoutAction .="&". htmlentities($_SERVER['QUERY_STRING']);
}
if ((isset($_GET['doLogout'])) &&($_GET['doLogout']=="true")){
//to fully log out a visitor we need to clear the session varialbles
session_unregister('MM_Username');
session_unregister('MM_UserGroup');
$logoutGoTo = "desconectado.php";
if ($logoutGoTo) {
header("Location: $logoutGoTo");
exit;
}
}
?>
<?php
session_start();
$MM_authorizedUsers = "";
$MM_donotCheckaccess = "true";
// *** Restrict Access To Page: Grant or deny access to this page
function isAuthorized($strUsers, $strGroups, $UserName, $UserGroup) {
// For security, start by assuming the visitor is NOT authorized.
$isValid = False;
// When a visitor has logged into this site, the Session variable MM_Username set equal to their username.
// Therefore, we know that a user is NOT logged in if that Session variable is blank.
if (!empty($UserName)) {
// Besides being logged in, you may restrict access to only certain users based on an ID established when they login.
// Parse the strings into arrays.
$arrUsers = Explode(",", $strUsers);
$arrGroups = Explode(",", $strGroups);
if (in_array($UserName, $arrUsers)) {
$isValid = true;
}
// Or, you may restrict access to only certain users based on their username.
if (in_array($UserGroup, $arrGroups)) {
$isValid = true;
}
if (($strUsers == "") && true) {
$isValid = true;
}
}
return $isValid;
}
$MM_restrictGoTo = "error_1.php";
if (!((isset($_SESSION['MM_Username'])) && (isAuthorized("",$MM_authorizedUsers, $_SESSION['MM_Username'], $_SESSION['MM_UserGroup'])))) {
$MM_qsChar = "?";
$MM_referrer = $_SERVER['PHP_SELF'];
if (strpos($MM_restrictGoTo, "?")) $MM_qsChar = "&";
if (isset($QUERY_STRING) && strlen($QUERY_STRING) > 0)
$MM_referrer .= "?" . $QUERY_STRING;
$MM_restrictGoTo = $MM_restrictGoTo. $MM_qsChar . "accesscheck=" . urlencode($MM_referrer);
header("Location: ". $MM_restrictGoTo);
exit;
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<!-- Begin
function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=1,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=700,left = 262,top = 34');");
}
// End -->
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Documento sin título</title>
<style type="text/css">
<!--
.Estilo1 {
font-family: "Monotype Corsiva";
font-weight: bold;
font-size: 24px;
}
.Estilo2 {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 16px;
}
.Estilo3 {font-family: Verdana, Arial, Helvetica, sans-serif}
-->
</style>
</head>
<body>
<p align="center" class="Estilo1"><img src="post-it.jpg" width="64" height="64"><span class="Estilo2">Menu de Ex-Alumnos </span></p>
<table width="306" border="0" align="center">
<tr>
<td><a href="javascript:popUp('usuarios_galeria.php')" class="Estilo3">Ver Fotos de usuarios </a></td>
</tr>
<tr>
<td width="300"><span class="Estilo3"><a href="javascript:popUp('usuarios_registrados.php')">Ver usuarios registrados</a></span></td>
</tr>
<tr>
<td><a href="javascript:popUp('subir_imagen.php')" class="Estilo3">Enviar Fotos </a></td>
</tr>
<tr>
<td><a href="<?php echo $logoutAction ?>" class="Estilo3">Desconectar</a></td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
</body>
</html> 
