no non ci sono riuscito.....vi posto l'intero codice l'ho alleggerito al massimo .
l'errore è questo ,se metto la porzione di codice della stampa del msg di errore in cima(sotto session_start),mi stampa il msg.Mentre se lo metto alla fine della pagina non mi stampa niente.....perchè?sono le 4 e non riuscirò a dormire stanotte finchè non capirò l'errore
Codice PHP:<?php
session_start();
//stampa messaggio
if(isset($_SESSION['msg'])){
echo $_SESSION['msg'];
unset($_SESSION['msg']);
}
# FileName="Connection_php_mysql.htm"
# Type="MYSQL"
# HTTP="true"
$hostname_connessione = "localhost";
$database_connessione = "prova";
$username_connessione = "root";
$password_connessione = "";
$connessione = mysql_pconnect($hostname_connessione, $username_connessione, $password_connessione) or trigger_error(mysql_error(),E_USER_ERROR);
?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
{
if (PHP_VERSION < 6) {
$theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
}
$theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
}
?>
<?php
// *** Validate request to login to this site.
if(!isset($_SESSION['id'])){
$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
$_SESSION['PrevUrl'] = $_GET['accesscheck'];
}
if (isset($_POST['mod_email'])) {
$loginUsername=$_POST['mod_email'];
$password=md5($_POST['mod_password']);
$MM_fldUserAuthorization = "";
$MM_redirectLoginSuccess = "prova.php";
$MM_redirectLoginFailed = "prova.php?failed";
$MM_redirecttoReferrer = true;
mysql_select_db($database_connessione, $connessione);
$LoginRS__query=sprintf("SELECT email, password FROM utenti WHERE email=%s AND password=%s",
GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text"));
$LoginRS = mysql_query($LoginRS__query, $connessione) or die(mysql_error());
$loginFoundUser = mysql_num_rows($LoginRS);
if ($loginFoundUser) {
$loginStrGroup = "";
if (PHP_VERSION >= 5.1) {session_regenerate_id(true);} else {session_regenerate_id();}
//declare two session variables and assign them
$_SESSION['MM_Username'] = $loginUsername;
$_SESSION['id'] = $loginUsername;
$_SESSION['MM_UserGroup'] = $loginStrGroup;
$_SESSION['msg']="OK";
if (isset($_SESSION['PrevUrl']) && true) {
$MM_redirectLoginSuccess = $_SESSION['PrevUrl'];
}
header("Location: " . $MM_redirectLoginSuccess );
}
else {
$_SESSION['msg']="KO";
header("Location: ". $MM_redirectLoginFailed );
}
}?>
<form action="<?php echo $loginFormAction; ?>" method="POST" name="login" id="form-login" >
<fieldset class="input">
<p id="form-login-email">
<label for="modlgn_email">Email</label>
<input id="modlgn_email" type="text" name="mod_email" class="inputbox" alt="email" size="18" />
</p>
<p id="form-login-password">
<label for="modlgn_password">Password</label>
<input id="modlgn_password" type="password" name="mod_password" class="inputbox" size="18" alt="password" />
</p>
<span class="art-button-wrapper">
<span class="art-button-l"> </span>
<span class="art-button-r"> </span>
<input type="submit" name="Submit" class="art-button" value="Login" />
</span>
</fieldset>
</form>
<div class="cleared"></div>
</div>
</div>
<div class="cleared"></div>
</div>
</div>
<?php
}else{
// ** 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['MM_Username'] = NULL;
$_SESSION['MM_UserGroup'] = NULL;
$_SESSION['PrevUrl'] = NULL;
$_SESSION['id'] = NULL;
unset($_SESSION['MM_Username']);
unset($_SESSION['MM_UserGroup']);
unset($_SESSION['PrevUrl']);
unset($_SESSION['id']);
$logoutGoTo = "prova.php";
if ($logoutGoTo) {
header("Location: $logoutGoTo");
exit;
}
}
?>
[url="<?php echo $logoutAction ?>"]Esegui logout[/url]
<?php
}
/*/stampa msg
if(isset($_SESSION['msg'])){
echo $_SESSION['msg'];
unset($_SESSION['msg']);
/*/
?>
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