Error al registrarme

[Manoloweb]

Te paso uno que hice y me funciona de maravilla...

Código PHP:

  $varNoreg="Invitado" 
 
if (isset($_GET["salir"])) 
    { 
        $varID=0; 
        $varUSR=$varNoreg; 
        $varNIV=0; 
        unset($_SESSION["sessionID"]); 
        unset($_SESSION["sessionUSR"]); 
        unset($_SESSION["sessionNIV"]); 
        session_destroy(); 
        header("Location: $varSalida"); 
        exit(); 
    } 
if (isset($_SESSION["sessionUSR"])) 
    { 
        $varUSR=$_SESSION["sessionUSR"]; 
        $varID=$_SESSION["sessionID"]; 
        $varNIV=$_SESSION["sessionNIV"]; 
    } 
elseif (isset($_COOKIE["cookieUSR"])and $_COOKIE["cookieUSR"]!="") 
    { 
        $varID=$_COOKIE["cookieID"]; 
        $varUSR=$_COOKIE["cookieUSR"]; 
        $varNIV=$_COOKIE["cookieNIV"]; 
        $_SESSION["sessionID"]=$_COOKIE["cookieID"]; 
        $_SESSION["sessionUSR"]=$_COOKIE["cookieUSR"]; 
        $_SESSION["sessionNIV"]=$_COOKIE["cookieNIV"]; 
    } 
else 
    { 
        if (isset($_POST["form_usuario"])) 
            { 
                $varFusuario=$_POST["form_usuario"]; 
                $varFpass=$_POST["form_password"]; 
                $varFrecordar=$_POST["form_recordar"]; 
                mysql_connect($varServidor,$varUser,$varPassword); 
                mysql_select_db($varBase); 
                $Qbuscar=mysql_query("select * from administradores where cuenta='$varFusuario'"); 
                $Qbuscar_fila=mysql_fetch_array($Qbuscar); 
                if ($varFpass==$Qbuscar_fila["password"] and $varFusuario!="" and $varFpass!="") 
                    { 
                        $varID=$Qbuscar_fila["adminID"]; 
                        $varUSR=$Qbuscar_fila["nombre"]; 
                        $varNIV=$Qbuscar_fila["nivel"]; 
                        $_SESSION["sessionID"]=$varID; 
                        $_SESSION["sessionUSR"]=$varUSR; 
                        $_SESSION["sessionNIV"]=$varNIV; 
                        if ($varFrecordar=="true") 
                            { 
                                setcookie("cookieID",$varID,time()[phone]); 
                                setcookie("cookieUSR",$varUSR,time()[phone]); 
                                setcookie("cookieNIV",$varNIV,time()[phone]); 
                            } 
                    } 
                else 
                    { 
                        $varID=0; 
                        $varUSR=$varNoreg; 
                        $varNIV=0; 
                        $varErrorlog=1; 
                    } 
                    mysql_free_result($Qbuscar); 
            } 
        else 
            { 
                $varID=0; 
                $varUSR=$varNoreg; 
                $varNIV=0; 
            } 
    } 
 
If ($varID==0){ 
// Mandas a la pagina de error 
} 
else 
{ 
//Le das acceso 
}  
   

Espero que te sirva...