title: Cant check $_SESSION variable
body: <p>Hello i have problem:  in login.php file i'm storing $_SESSION['$myusername'];
  I try to check that SESSIOn username in page.php file, if session not exists it redirects back to login.php. I try to login with valid user but i'm redirecting back to login.php
  I dont know where is the problem.</p>
  
  <p>login.php:</p>
  
  <pre><code> &lt;?php
  
  
  $host="localhost"; // Host name
  $username="root"; // Mysql username
  $password=""; // Mysql password
  $db_name="2"; // Database name
  
  // Connect to server and select databse.
  mysql_connect("$host", "$username", "$password")or die("cannot connect");
  mysql_select_db("$db_name")or die("cannot select DB");
  if (isset($_POST['formsubmitted'])) {
      $error = array();//Declare An Array to store any error message 
  };  
  // username and password sent from form
  $myusername=$_POST['myusername'];
  $mypassword=$_POST['mypassword'];
  
  // To protect MySQL injection (more detail about MySQL injection)
  $myusername = stripslashes($myusername);
  $mypassword = stripslashes($mypassword);
  $myusername = mysql_real_escape_string($myusername);
  $mypassword = mysql_real_escape_string($mypassword);
  
  $sql="SELECT * FROM `members` WHERE username='$myusername' and password='$mypassword'";
  $result=mysql_query($sql);
  
  // Mysql_num_row is counting table row
  $count=mysql_num_rows($result);
  
  // If result matched $myusername and $mypassword, table row must be 1 row
  
  if($count==1){
  
  // Register $myusername, $mypassword and redirect to file "login_success.php"
  //store data:
  $_SESSION['$myusername'];
  
  //next page:
  
  
  header("location:page.php");
  }
  
  else {
  
  include 'index.php';
  $error[] = '&lt;b&gt;&lt;h5&gt;Invalid Username or Password!&lt;/b&gt;';
  
  
  if(isset($error) &amp;&amp; is_array($error))
  {
     echo "&lt;div class='content1'&gt;" . implode("&lt;br /&gt;", $error) . "&lt;/div&gt;";
  };
  
  };
  ?&gt;
  </code></pre>
  
  <p>page.php :</p>
  
  <pre><code>&lt;?php
      ob_start();
      session_start();
      if(!isset($_SESSION['$myusername']))
      {
           header("Location: login.php")
      }
  
  
  ?&gt;
  </code></pre>