PHP Decode

<?php  
 
@session_start(); 
 
 
 
include_once('funtions.php');  
 
 
 
if (verifica_conexion()==true) { 
 
 
 
	$query = "SELECT count(*) as cantidad 
 
				FROM messages 
 
				WHERE ( fk_id_user = " . $_SESSION['id_user'] .  
 
				" OR fk_id_user is null)  
 
				and id_message not in (select fk_id_message from  
 
				messages_ready where fk_username = '" . $_SESSION['username'] . "') ";	 
 
	$check = mysqli_query($connectdb, $query)or die(mysqli_error()); 
 
	while($info = mysqli_fetch_array( $check )) { 
 
		$_SESSION['mensajes'] = $info['cantidad']; 
 
	} 
 
 
 
	if ($_GET['menu']!='') { 
 
		$_SESSION['menu_opcion'] = $_GET['menu']; 
 
	} 
 
 
 
	include_once('header.php');  
 
 
 
?> 
 
	<body> 
 
     
 
    	<?php include_once('header_menu.php'); ?> 
 
 
 
         
 
        <!-- Body --> 
 
         
 
        <div class="container"> 
 
         
 
            <div class="row"> 
 
                <div class="col-sm-12"> 
 
                    <div id="incluir-contenido"></div> 
 
                </div> 
 
            </div> 
 
         
 
            <!-- Footer --> 
 
            <div class="row"> 
 
                <div class="page-header"> 
 
                    <?php include_once('footer.php');?> 
 
                </div> 
 
            </div> 
 
            <!-- End of Footer --> 
 
        </div> 
 
         
 
    </body> 
 
<?php 
 
} 
 
?> 
 
<script> 
 
	incluir_contenido('<?php echo $_SESSION['menu_opcion']; ?>'); 
 
</script>