login status - (php)

[alfo]

Is the following php safe to use to check for login status?

Do I need to check against a session id?

   function UserLoginStatus() {
     $result = mysql_query("SELECT * FROM `idx_users` WHERE `username` = '".$_COOKIE[COOKIE_USERNAME]."'");
    while ($row = mysql_fetch_array($result)) {
        if ($row['status'] == '1'){
            return true;
        }
    }
     return false;
  }

  include "application.php";
  if (UserLoginStatus() === true){
      echo "Logged in.";
  }else{
      echo "Logged out.";
  } 
  

Thanks

PS v5.4

[dody]

This version is no longer supported. Please upgrade to indexu deluxe.

[pimpmaster]

I´m using the following code to check if a user is logged in:

 <%if $login_status_logged_in eq 1%>