Prueba con este codigo y me dices si es lo que quieres
Código PHP:
<?php
session_start();
include "conn.inc.php";
if($_POST['login']!="" && $_POST['pass']!= "")
{
if($_POST['login']== "adminis" && $_POST['pass']== "adminis")
{
$_SESSION['login'] = $_POST['login'];
$_SESSION['pass'] = $_POST['pass'];
echo "<script>alert('Bienvenido administrador');</script>";
header("Location: administracion1.php");
}else{
$query = "SELECT login, pass FROM usuario WHERE login = '" . $_POST['login'] ."' AND pass = '" . $_POST['pass']. "';";
$results = mysql_query($query) or die(mysql_error());
if(mysql_num_rows($results) != 0)
{
$_SESSION['login'] = $_POST['login'];
$_SESSION['pass'] = $_POST['pass'];
echo "<script>alert('Hola ".$_POST['login']."');</script>";
//header("Location: datospersonales.php");
}else{
echo "<script>alert('No existen registros');</script>";
//header("Location: aviso1.html");
}
}
}else{
echo "<script>alert('Usuario y/o clave incorrecta');</script>";
//header("Location: aviso1.html");
}
?>
Saludos.