[RESOLVED] login help

on my site i have a blog message board thing and i wanted to no how i could only have users be able to add to the blog instead of everyone

thanx

i no it involves a hidden field of the username but i need a cookie to keep them logged in

??? anyone ???

Try using soemthing like the following

register.php

PHP Code:

---

<?
if($_POST['action']=="register")
{
    $link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
    msql_select_db('database',$link);
    $query = "INSERT INTO member (username,password)VALUES('{$_POST['username']}','" . md5($_POST['password']). "')"; //create the new user
    mysql_query($query,$link);
?>
Thank you for registering <?=$_POST['username']?>. You can now login.
<?
}
else
{
?>
<form method="post">
    <table class="columns" cellspacing="0" cellpadding="0">
    <tr>
        <th class="column">Login</th>
    </tr>
        <tr>
            <td>Username
                <input type="text" name="username" class="text"/>
            </td>
        </tr>
        <tr>

            <td>Password
                <input type="password" name="password" class="text"/>
            </td>
        </tr>
        <tr>
            <td colspan="2">
                <input type="hidden" name="action" value="reg" />
                <input type="submit" name="submit" value="Register" class="button" />
            </td>
        </tr>
    </table>
</form>
<?
}
?>

---

checklogin.php

PHP Code:

---

<?
session_start();
function check_user_and_password($username,$password)
{
    $link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
    msql_select_db('database',$link);
    $query = "SELECT username,password FROM member WHERE username = '$username' AND password = '" . md5($password) . "'";
    mysql_query($query,$link);
    if(!empty($results)) //if the query returns nothing then they havent logged in correctly
    {
        $_SESSION['username'] = $username;  //set a value to check later
        $_SESSION['loggedin'] = true; 
        return true;
    }
    else
    {
        return false;
    }
}
?>

---

yourscript.php

PHP Code:

---

<?
require_once('checklogin.php');
if($_SESSION['loggedin'] == true) //check tosee if they are already logged in
{ //display the memeber stuff
?>
    Your memeber stuff here!
<?
}
else
{
    if($_POST['action'] == "login") // check to see if they are trying to login
    {
         check_user_and_password($_POST['username'],$_POST['password']);
         header('Location: ' $_SERVER['PHP_SELF']); //refresh so user sees member section
    }
    else // they are not tryin to login so make them
    {
    ?>
    <form method="post">
    <table class="columns" cellspacing="0" cellpadding="0">
    <tr>
        <th class="column">Login</th>
    </tr>
        <tr>
            <td>Username
                <input type="text" name="username" class="text"/>
            </td>
        </tr>
        <tr>

            <td>Password
                <input type="password" name="password" class="text" />
            </td>
        </tr>
        <tr>
            <td colspan="2">
                <input type="hidden" name="action" value="login" />
                <input type="submit" name="submit" value="Login" class="button" />
            </td>
        </tr>
    </table>
</form>
    <?
    }
}
?>

---

It is really basic but it will get you started on what you want to do.