[AJAX] récupérer tableau de php vers ajax

changement de tactique :

repPhpAjax.php

Code:

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        echo	"<script>
		function load() {
 
		var map;
		var directionsPanel;
		var directions;
 
		map = new GMap2(document.getElementById(\"map_canvas\"));
		map.addControl(new GLargeMapControl3D());
		map.addControl(new GMapTypeControl());
		map.setCenter(new GLatLng(47.082999, 2.395692), 6);
		directionsPanel = document.getElementById(\"map_directions\");
		directions = new GDirections(map, directionsPanel);
		directions.load(\"from: \"".$latA."\",\"".$longA."\" to: \"".$latB."\",\"".$longB.");
 
 
		GEvent.addListener(directions,\"load\", function() {
 
			var distance = directions.getDistance().meters;
			var duree = directions.getDuration().seconds;
 
			alert(\"- Distance : \"+distance+\" Metres\n- Durée : \"+duree+\" Secondes\");
		});
 
	 };
	 </script>";

page1.php

Code:

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function traitementReponse(http_request,id_ecrire) {
	var affich="";
	if (http_request.readyState == 4) {
		if (http_request.status == 200) {
 
			document.getElementById(id_ecrire).innerHTML = http_request.responseText; 
 
			alert("La fonction js :"+http_request.responseText);
 
		} 
		else {
                alert('Un problème est survenu avec la requête. Status: '+http_request.status);
        }
    }
}

Toujours sans résultat