Невозможно войти

dbConfig.php

<?php $dbhost = 'localhost'; $dbuser = 'root'; $dbpass = ''; $conn = mysql_connect($dbhost, $dbuser, $dbpass) or die; $dbname = 'charitydatabase'; mysql_select_db($dbname); echo("Successfully Connected to ". $dbname . " !"); mysql_query($sql); ?> 

register.php

 <?php // dbConfig.php is a file that contains your // database connection information. This // tutorial assumes a connection is made from // this existing file. include ("dbConfig.php"); //Input vaildation and the dbase code if ( $_GET["op"] == "reg" ) { $bInputFlag = false; foreach ( $_POST as $field ) { if ($field == "") { $bInputFlag = false; } else { $bInputFlag = true; } } // If we had problems with the input, exit with error if ($bInputFlag == false) { die( "Problem with your registration info. " ."Please go back and try again."); } // Fields are clear, add user to database // Setup query $q = "INSERT INTO `dbuser` (`username`,`password`,`email`) " ."VALUES ('".$_POST["username"]."', " ."PASSWORD('".$_POST["password"]."'), " ."'".$_POST["email"]."')"; // Run query $r = mysql_query($q); // Make sure query inserted user successfully if ( !mysql_insert_id() ) { die("Error: User not added to database."); } else { // Redirect to thank you page. Header("Location: register.php?op=thanks"); } } // end if //The thank you page elseif ( $_GET["op"] == "thanks" ) { echo "<h2>Thanks for registering!</h2>"; } //The web form for input ability else { echo "<form action=\"?op=reg\" method=\"POST\">\n"; echo "Username: <input name=\"username\" MAXLENGTH=\"16\"><br />\n"; echo "Password: <input type=\"password\" name=\"password\" MAXLENGTH=\"16\"><br />\n"; echo "Email Address: <input name=\"email\" MAXLENGTH=\"25\"><br />\n"; echo "<input type=\"submit\">\n"; echo "</form>\n"; } // EOF ?> 

login.php

  <?php session_start(); // dBase file include "dbConfig.php"; if ($_GET["op"] == "login") { if (!$_POST["username"] || !$_POST["password"]) { die("You need to provide a username and password."); } // Create query $q = "SELECT * FROM `dbuser` " ."WHERE `username`='".$_POST["username"]."' " ."AND `password`=PASSWORD('".$_POST["password"]."') " ."LIMIT 1"; // Run query $r = mysql_query($q); if ( $obj = @mysql_fetch_object($r) ) { // Login good, create session variables $_SESSION["valid_id"] = $obj->id; $_SESSION["valid_user"] = $_POST["username"]; $_SESSION["valid_time"] = time(); // Redirect to member page Header("Location: member.php"); } else { // Login not successful die("Sorry, could not log you in. Wrong login information."); } } else { //If all went right the Web form appears and users can log in echo "<form action=\"?op=login\" method=\"POST\">"; echo "Username: <input name=\"username\" size=\"15\"><br />"; echo "Password: <input type=\"password\" name=\"password\" size=\"8\"><br />"; echo "<input type=\"submit\" value=\"Login\">"; echo "</form>"; } ?> 

Задача 1: Возможность добавления пользователя в базу данных. Но я получаю сообщение об ошибке после отладки кода:

Предупреждение. Невозможно изменить информацию заголовка – уже отправленные заголовки (вывод начинается с C: \ xampp \ htdocs \ Login \ dbConfig.php: 4) в C: \ xampp \ htdocs \ Login \ register.php в строке 49

Проблема 2: и ошибка сохранения пароля в базе данных.

проблем3:

не удалось войти.

Пожалуйста, помогите мне решить вышеуказанный вопрос, tq!

 if (!$_POST["username"] || !$_POST["password"]) { die("You need to provide a username and password."); } 

 if (empty($_POST["username"]) || empty($_POST["password"]) ) { die("You need to provide a username and password."); }