如何在php中的sql查询中使用会话值？

Question

I want to use session's name in my sql query. I dont know how to compare values in sql query using session. And is it safe to compare session's value in sql query. I am getting this error-

( ! ) Parse error: syntax error, unexpected T_VARIABLE in ****www\1lab\my-status.php on line 53

At top of htmlpage-:

  session_start();
   if(!isset($_SESSION['check']) or ($_SESSION['check'])!=='*****' or         !isset($_SESSION['uname']) )
    {
       header('location:index.php');
    }

in between html page-:

   include 'config.php';
   $list="select * from books where b_issued = "$_SESSION['uname']"";
   $data=mysqli_query($con,$list); 
   while($info = mysqli_fetch_array($data))
   {
     echo $info['b_name']."<br><br>";
   }

Answer 1

You forgot the concatenate operator

$list="select * from `books` where `b_issued` = ".$_SESSION['uname'];
                                              // ^------ Here