来自php的Jquery ui autocomplete + json数据

Question

我正在尝试使用jquery ui autocomplete和json，来自php文件的数据自动完成字段...但是无法获得任何结果......

这是我的jquery代码：

$('#rech_abo').keyup(function(e) {
        e.preventDefault();

        $( ".find_group_ac" ).autocomplete({
            minLength: 3,
            source: function(request, response) {
                $.ajax({
                    url: "/chercheabo",
                    data: {achercher : $("#rech_abo").val()},
                    dataType: "json",
                    type: "POST",
                    success: function(data) {
                        response($.map(data, function(obj) {
                            return {
                                label: obj.pseuDO,
                                value: obj.userID,
                               // description: obj.description
                               // id: obj.userID // don't really need this unless you're using it elsewhere.
                            };
                        }));
                    }

                });
            }
        }).data( "autocomplete" )._renderItem = function( ul, item ) {
            // Inside of _renderItem you can use any property that exists on each item that we built
            // with $.map above */
            return $("<li></li>")
                .data("item.autocomplete", item)
                .append("<a>" + item.label + "<br>" + item.description + "</a>")
                .appendTo(ul);
        };
        });

我的php：

$options = array();
$result = mysqli_query($link,"select userid, pseudo from utilisateurs where pseudo like '%".strtolower($_POST[achercher])."%'");
while($uti = $result->fetch_object()) {

    $options['myData'][] = array(
        'userID' => $uti->userid,
        'pseuDO'    => $uti->pseudo,
        'retourDATA' => $retour_data
    );
}

echo json_encode($options);

我的HTML：

<div class=\"abo_parnom\"><input class=\"input_text_compte\" type=\"text\" placeholder=\"Tappez un nom\" id=\"rech_abo\"> <input type=\"button\" id=\"rech_abo_valider\" class=\"bouton_suppr\" value=\"Ok\"></div>

知道这里缺少什么吗？ 感谢