load ressource via ajax

$data=null;
$menuIndex = $_GET['menuIndex'];
$criteria = $modx->newQuery('modResource');
$criteria->where(array('parent'=>"2",'menuindex'=>$menuIndex));
$resource = $modx->getObject('modResource',$criteria);

$idPage=$resource->get('id');
$urlPage=$modx->makeUrl($idPage,'','','full');
  //return $urlPage;
  if($http= fopen($urlPage,"r")){
while(!feof($http)){
$data .=fgets($http,1024);
}
fclose($http);
}
preg_match_all('/(<!--DebutContenuArtiste-->)(\W.*)(<!--FinContenuArtiste-->)/imsU',$data,$result);
foreach($result[2] as $contenu){
$contenu;
}

$arr = array ('contenu'=>$contenu);
return json_encode($arr);​

 url=site_url+"/admin/loadajaxartiste.html?menuIndex="+num;
                $.ajax({
                dataType:"json",
                url :url,
                async: false,
                 beforeSend:function() {
                 },
                success :function(data){
                   $("#blocArtiste"+num).append(data.contenu);
                    $("#blocArtiste"+num).css(cssDeb);
                    $("#blocArtiste"+num).animate({left:0},900);
                    $("#blocArtiste"+elemCurrent).animate(cssFin,900);
                    tailleBlocBiographie();
                    $(".ppt").remove();
                    $(".pp_overlay").remove();
                    $(".pp_pic_holder").remove();
                    jQuery('.jcarousel-skin-dates').jcarousel({
                        vertical: true,
                        animation: 800,
                      visible:4
                    });
                    jQuery('.jcarousel-skin-discoGalery').jcarousel({
                        animation: 800,
                      visible:3
                    });
                  $("a[rel^='prettyPhoto']").prettyPhoto();
                  JolieScroll();
                }