I have a Bootstrap dropdown list and when the end user select one of the items I want to pass the parameter `option` indicated on the `href` attribute to my php file `rssnews.inc.php`, my dropdown list look like:

```
<div class="dropdown">
    <button class="btn btn-default dropdown-toggle" type="button" id="dropdownMenu1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true">
    Select<span class="caret"></span>
    </button>
    <ul class="dropdown-menu" aria-labelledby="dropdownMenu1" id="rubChoice">
        <li><a href="/rss/core/inc/rssnews.inc.php?option=sport" id="act1" data-item="Sport">Sport</a></li>
        <li><a href="/rss/core/inc/rssnews.inc.php?option=politique" id="act2"  data-item="Politique">Politique</a></li>
        <li><a href="/rss/core/inc/rssnews.inc.php?option=international" id="act3"  data-item="International">International</a></li>
        <li><a href="/rss/core/inc/rssnews.inc.php?option=divers" id="act4"  data-item="Divers">Divers</a></li>
    </ul>
</div>

```

my `rssnews.inc.php` file look like:

```
    function getFeed() 
    {
        if (isset($_POST['option'])) {
            $option = $_POST['option'];

            switch ($option) {
                case "sport":
                    $url = 'http://feeds.feedburner.com/GalerieArtciles';
                    echo 'Du sport'.$url;
                    break;
                case "international":
                    $url = 'http://feeds.bbci.co.uk/news/rss.xml?edition=int#';
                    echo 'Du international'.$url;
                    break;
                case "politique":
                    $url = 'http://www.elkhabar.com/feeds/';
                    echo 'du politique'.$url;
                    break;
                default: $url = 'http://feeds.bbci.co.uk/news/rss.xml?edition=int#';
                    break;
            }
        } else {
            echo "there is error"; 
        }

       $content = file_get_contents($url);
    $data = simplexml_load_string($content);
    $articles= array();

    foreach( $data->channel->item as $item){

        $articles[]=array(
            'title'         =>  (string)$item->title,
            'description'   =>  (string)$item->description,
            'link'          =>  (string)$item->link,
            'Date'          =>  (string)$item->pubDate,
        );
    }

     $articalesArr = array();
    foreach($articles as $article){
        array_push($articalesArr, $article['title']);    
    }

    return json_encode($articles);
}
if(isset($_GET['function']) && $_GET['function'] !=''){

    $result = $_GET['function']();
    echo json_encode($result);
    header("Content-type:application/json");
} 
    }

```

To execute this function I have a button with `id="start"` and when end user click on it make an AJAX call: 

```
<button type="submit" class="btn btn-default btn-success col-xs-3" id="start"> <i class="fa fa-play"></i>Start</button>

```

the AJAX call: 

```
$('#start').click(function(){
            var $item = $('#test');
                $.ajax({
                    type:'GET',
                    url: '/rss/core/inc/rssnews.inc.php?function=getFeed',
                    //dataType: 'json',
                    success: function (data){
                    var articles = $.parseJSON(data);
                    $.each (articles, function (key, value) { 
                        $item.append('<div id="item" style="border-bottom:1px dashed #ccc; padding-top:10px; padding-right: 10px;"><ul><li><h4>'+ value.title +'</h4></li> <li>'+ value.description+'</li><li><a href="'+value.link+'">Lire+</a></li></ul>');
                        console.log('success',data);

                    });

                    }
                });
            });

```

Once I execute the code, I get this message `"there is error"`. So, How can I transfer successfully a parameter from dropdown list to a php file ? Knowing that the scenario I follow is: 
1. End user select a topic with dropdown list
2. the topic choosen correspond to a URL 
3. function getFeed() fetch the rss feed
4. when end user click on start button rss is fetched and data displayed on a div element
Any Help I appreciate it.