php - Header in the top -

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at time need 2 view pages in 1 page. in session this: 

       <?php         session_start();         if(isset($_session['login_id']) && !empty($_session['login_id'])){                   ?>           ///my html code///         <?              }             else {         ?>           //diffetent view here//         <?              }             require_once('../libraries/config/configpdo.php');         ?>

but need make become 1 page , redirect if not logged in. 

       <?php         session_start();         if(isset($_session['login_id']) && !empty($_session['login_id'])){                   ?>           ///my html code///         <?              }             else {header("location: login.php");         ?>          <?              }             require_once('../libraries/config/configpdo.php');         ?>

but see, put header redirect @ bottom of page.

how make simple, set header location in top of page.

try - 

session_start(); if(empty($_session['login_id'])){      header("location: login.php");     exit; } else {     //html }

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