[formats] Change item to associative array

Previously the item class was used to dump literaly any data
into an object. The same can be archived by using an array
with named keys (associative array).

Technically it makes more sense to use an array as we want to
be able to store any parameter into our item.

formats/AtomFormat.php

@@ -23,11 +23,11 @@ class AtomFormat extends FormatAbstract{
 
         $entries = '';
         foreach($this->getDatas() as $data){
-            $entryAuthor = is_null($data->author) ? '' : $this->xml_encode($data->author);
-            $entryTitle = is_null($data->title) ? '' : $this->xml_encode($data->title);
-            $entryUri = is_null($data->uri) ? '' : $this->xml_encode($data->uri);
-            $entryTimestamp = is_null($data->timestamp) ? '' : $this->xml_encode(date(DATE_ATOM, $data->timestamp));
-            $entryContent = is_null($data->content) ? '' : $this->xml_encode($this->sanitizeHtml($data->content));
+            $entryAuthor = is_null($data['author']) ? '' : $this->xml_encode($data['author']);
+            $entryTitle = is_null($data['title']) ? '' : $this->xml_encode($data['title']);
+            $entryUri = is_null($data['uri']) ? '' : $this->xml_encode($data['uri']);
+            $entryTimestamp = is_null($data['timestamp']) ? '' : $this->xml_encode(date(DATE_ATOM, $data['timestamp']));
+            $entryContent = is_null($data['content']) ? '' : $this->xml_encode($this->sanitizeHtml($data['content']));
             $entries .= <<<EOD
 
     <entry>

formats/HtmlFormat.php

@@ -17,11 +17,11 @@ class HtmlFormat extends FormatAbstract{
 
         $entries = '';
         foreach($this->getDatas() as $data){
-            $entryAuthor = is_null($data->author) ? '' : '<br /><p class="author">by: ' . $data->author . '</p>';
-            $entryTitle = is_null($data->title) ? '' : $this->sanitizeHtml(strip_tags($data->title));
-            $entryUri = is_null($data->uri) ? $uri : $data->uri;
-            $entryTimestamp = is_null($data->timestamp) ? '' : '<time datetime="' . date(DATE_ATOM, $data->timestamp) . '">' . date(DATE_ATOM, $data->timestamp) . '</time>';
-            $entryContent = is_null($data->content) ? '' : '<div class="content">' . $this->sanitizeHtml($data->content). '</div>';
+            $entryAuthor = isset($data['author']) ? '<br /><p class="author">by: ' . $data['author'] . '</p>' : '';
+            $entryTitle = isset($data['title']) ? $this->sanitizeHtml(strip_tags($data['title'])) : '';
+            $entryUri = isset($data['uri']) ? $data['uri'] : $uri;
+            $entryTimestamp = isset($data['timestamp']) ? '<time datetime="' . date(DATE_ATOM, $data['timestamp']) . '">' . date(DATE_ATOM, $data['timestamp']) . '</time>' : '';
+            $entryContent = isset($data['content']) ? '<div class="content">' . $this->sanitizeHtml($data['content']). '</div>' : '';
             $entries .= <<<EOD
 
 <section class="feeditem">

formats/MrssFormat.php

@@ -21,11 +21,11 @@ class MrssFormat extends FormatAbstract{
 
         $items = '';
         foreach($this->getDatas() as $data){
-            $itemAuthor = is_null($data->author) ? '' : $this->xml_encode($data->author);
-            $itemTitle = strip_tags(is_null($data->title) ? '' : $this->xml_encode($data->title));
-            $itemUri = is_null($data->uri) ? '' : $this->xml_encode($data->uri);
-            $itemTimestamp = is_null($data->timestamp) ? '' : $this->xml_encode(date(DATE_RFC2822, $data->timestamp));
-            $itemContent = is_null($data->content) ? '' : $this->xml_encode($this->sanitizeHtml($data->content));
+            $itemAuthor = is_null($data['author']) ? '' : $this->xml_encode($data['author']);
+            $itemTitle = strip_tags(is_null($data['title']) ? '' : $this->xml_encode($data['title']));
+            $itemUri = is_null($data['uri']) ? '' : $this->xml_encode($data['uri']);
+            $itemTimestamp = is_null($data['timestamp']) ? '' : $this->xml_encode(date(DATE_RFC2822, $data['timestamp']));
+            $itemContent = is_null($data['content']) ? '' : $this->xml_encode($this->sanitizeHtml($data['content']));
             $items .= <<<EOD
 
     <item>