jQuery Grid Plugin - jqGrid

jQuery(document).ready(function(){
jQuery("#list").jqGrid({
    url:'../fonctions/ajax/ajax_search.php',
    datatype: "xml",
    mtype: 'GET',
    colNames:['NFic','Date','Organisme','Objet','Gravité','Etat','Dirisi','Cirisi'],
    colModel:[ {name:'ID',index:'ID', width:55},
        {name:'Date_Debut',index:'Date_Debut', width:90},
        {name:'Armee',index:'Armee', width:100},
        {name:'Libelle',index:'Libelle', width:80, align:"right", sortable:false},
        {name:'Gravite',index:'Gravite', width:80, align:"right"},
        {name:'Etat',index:'Etat', width:80,align:"right"},
        {name:'dirisi',index:'dirisi', width:80,align:"right"},
        {name:'cirisi',index:'cirisi', width:80,align:"right"} ],
  rowNum:10,
  rowList:[10,20,30],
  pager: '#pager',
  sortname: 'ID',
  viewrecords: true,
  sortorder: "desc",
  caption:"Recherche de Fic" }).navGrid('#pager',{edit:false,add:false,del:false});
});

<?php
session_start();

include_once($_SESSION["chemin"].'/bdd/FicDAO.class.php');
include_once($_SESSION["chemin"].'/class/Config.class.php');
include_once($_SESSION["chemin"].'/bdd/FiltreDAO.class.php');
//require_once($_SESSION["chemin"].'/class/jqGrid/jquery.jqGrid.min.js');

$page = $_GET['page']; // get the requested page
$limit = $_GET['rows']; // get how many rows we want to have into the grid
$sidx = $_GET['sidx']; // get index row - i.e. user click to sort
$sord = $_GET['sord']; // get the direction
if(!$sidx) $sidx =1;

$filtres = getFiltreByUser($_SESSION["ut_id"]);

$dao = new FicDAO();
$sql = $dao->getSQLsearchFic($filtres);
$count=$dao->createViewUser($sql,$_SESSION["ut_id"]);
$dao->close();

if( $count >0 )
    { $total_pages = ceil($count/$limit); }
    else { $total_pages = 0; }
if ($page > $total_pages) $page=$total_pages;
$start = $limit*$page - $limit; // do not put $limit*($page - 1)

$db = new PDO ("mysql:host=".Config::$host.";dbname=".Config::$database."", Config::$user, Config::$pass);
$sql="select ID, Date_Debut, Armee, Libelle, Gravite, Etat, dirisi, cirisi from view".$_SESSION["ut_id"]
        . " ORDER BY $sidx $sord LIMIT $start , $limit";
$db->exec('SET CHARACTER SET utf8');
$stm = $db->query($sql);

$responce->page = $page;
$responce->total = $total_pages;
$responce->records = $count;

$i=0;
while($row = $stm->fetch(PDO::FETCH_ASSOC)) {
        $responce->rows[$i]['id']=$row['ID'];
        $responce->rows[$i]['cell']=array($row['ID'],$row['Date_Debut'],$row['Armee'],$row['Libelle'],$row['Gravite'],$row['Etat'],$row['dirisi'],$row['cirisi']);
        $i++;
        }

echo json_encode($responce);

?>