functions

<?php


function login($db,$usrname,$usrpass){
    if(isset($_POST['submit'])){
        $sql ="select * from users where usrname='".$usrname."' and usrpass='".sha1($usrpass)."'";
    $query = mysqli_query($db,$sql) or die (mysqli_error($db));
    $nums = mysqli_num_rows($query);
    if($nums == 1){
        $_SESSION['login'] = true;
        header("location:index.php?page=1");
    }else{
        echo"<div class=\"error\">Brugernavn eller adgangskode er forkert</div>";

};
};
?>
<table border="0" cellspacing="0" cellpadding="0">
    <h2>Login</h2>
    <form method="POST" action="" name="formlogin">
      Indtast brugernavn og adgangskode
      <tr>
        <td><b>Brugernavn:</b></td>
        <td><input type="text" size="20" name="usrname"></td><br>
      </tr>
      <tr>
        <td><b>Adgangskode:</b></td>
        <td><input type="password" size="20" name="usrpass"></td>
      </tr><br>
      <tr>
        <td><input type="submit" name="submit" value="Log Ind" class="btn"></td>
      </tr>
    </form>
</table>
<?php
};
?>

<?php
//funktionen der henter text fra databasen tilsvarende pagenummer sætter overskrift fra databasen, tilføjer overskrift class til overskriften

function get_content($db,$page){
    $sql = "select * from content where m_id = ".@$_GET['page']."";
                $query = mysqli_query($db,$sql) or die (mysqli_error($db));
                        while($res=mysqli_fetch_array($query)){
                        echo "<h3>";
                        echo $res['m_title'] ;
                        echo "</h3>";
                        echo $res['m_content'];
            };
  };
?>
<?php
function logud(){
    unset($_SESSION['granted']);
    session_destroy();
    header("location:index.php?page=6");
};
?>