Je suis tout débutant en dhtmx, j’ai écrit un petit code en utilisant le  composant
dhtmlxconnector, mais jusqu’a present je ne parviens pas à charger les données de mes tables dans une grille, pourtant  j’ai respecté ce qui est dans la documentation.
Here is my client side code.
<html>
	<head>
		<title>
			premier test langage pljava
		</title>
		<style>
			.global
			{
				width:400px;
				height:400px;
				margin:auto;
			}
		</style>
		<script src="codebase/dhtmlx.js" type="text/javascript"></script>
		<script src="codebase/connector.js"></script>
		<script src="codebase/dataprocessor.js"></script>
		<link rel="STYLESHEET" type="text/css" href="codebase/dhtmlx.css">
		<script type="text/javascript">  
			var mygrid,myDP;
			function doOnLoad()
			{
				mygrid = new dhtmlXGridObject('gridbox');
				mygrid.setImagePath("codebase/imgs/");
				mygrid.setHeader("nom,prenom,email,telephone,ville,filliere,id_classe");
				mygrid.attachHeader("#connector_text_filter,#connector_select_filter,#connector_select_filter");
				mygrid.setInitWidths("200,80,*");
				mygrid.setColTypes("ro,ed,ed");
				mygrid.setColSorting("str,connector,str");
				mygrid.init();
					mygrid.load("traitement.php");
			 
				myDP = new dataProcessor("traitement.php");
					myDP.init(mygrid);		 
			}
		</script>		
	</head>
	<body onload="doOnLoad()">
		<div id="gridbox" style="width:450px;height:250px;border:1px solid #A4BED4;"></div>
	</body>
</html>the server side code
<?php
try {		
		require_once("codebase/grid_connector.php");
		$res=new PDO('pgsql:host=localhost port=5436 dbname=etudiant', 'postgres', 'fb12fb12b');
		$gridConn=new GridConnector($res,"PDO");
if ($gridConn->is_select_mode())
		{
			$gridConn->render_sql("SELECT * FROM etudiant,classe WHERE etudiant.id_classe=classe.id_classe","etudiant.id_etudiant","nom,prenom,email,telephone");
		}else
		{
			 $gridConn->render_table("etudiant","id_etudiant","nom,prenom,email,telephone");
		}
		//$sql=$db->query("SELECT * FROM resultatresultset_test()");
		
		//$result = $sql->fetchAll();
          //var_dump($result);
    }
	catch (PDOException $e)
	{
		print "Erreur !: " . $e->getMessage() . "<br/>";
		die();
    }
	?>i have following error:
[15-Jan-2013 07:29:22] PHP Warning:  PDO::__construct() expects parameter 1 to be string, object given in H:\Program Files\Zend\Apache2\htdocs\testpljava\codebase\base_connector.php on line 344
[15-Jan-2013 07:29:22] PHP Fatal error:  Call to a member function select() on a non-object in H:\Program Files\Zend\Apache2\htdocs\testpljava\codebase\base_connector.php on line 513quelqu’un peut il m’aider svp