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<?php
/**
* Univarsel Feed Writer
*
* FeedItem class - Used as feed element in FeedWriter class
*
* @package UnivarselFeedWriter
* @author Anis uddin Ahmad <anisniit@gmail.com>
* @link http://www.ajaxray.com/projects/rss
*/
class FeedItem
{
private $elements = array(); //Collection of feed elements
private $version;
/**
* Constructor
*
* @param contant (RSS1/RSS2/ATOM) RSS2 is default.
*/
function __construct($version = RSS2)
{
$this->version = $version;
}
/**
* Set element (overwrites existing elements with $elementName)
*
* @access public
* @param srting The tag name of an element
* @param srting The content of tag
* @param array Attributes(if any) in 'attrName' => 'attrValue' format
* @return void
*/
public function setElement($elementName, $content, $attributes = null)
{
if (isset($this->elements[$elementName])) {
unset($this->elements[$elementName]);
}
$this->addElement($elementName, $content, $attributes);
}
/**
* Add an element to elements array
*
* @access public
* @param srting The tag name of an element
* @param srting The content of tag
* @param array Attributes(if any) in 'attrName' => 'attrValue' format
* @return void
*/
public function addElement($elementName, $content, $attributes = null)
{
$i = 0;
if (isset($this->elements[$elementName])) {
$i = count($this->elements[$elementName]);
} else {
$this->elements[$elementName] = array();
}
$this->elements[$elementName][$i]['name'] = $elementName;
$this->elements[$elementName][$i]['content'] = $content;
$this->elements[$elementName][$i]['attributes'] = $attributes;
}
/**
* Set multiple feed elements from an array.
* Elements which have attributes cannot be added by this method
*
* @access public
* @param array array of elements in 'tagName' => 'tagContent' format.
* @return void
*/
public function addElementArray($elementArray)
{
if(! is_array($elementArray)) return;
foreach ($elementArray as $elementName => $content)
{
$this->addElement($elementName, $content);
}
}
/**
* Return the collection of elements in this feed item
*
* @access public
* @return array
*/
public function getElements()
{
return $this->elements;
}
// Wrapper functions ------------------------------------------------------
/**
* Set the 'dscription' element of feed item
*
* @access public
* @param string The content of 'description' element
* @return void
*/
public function setDescription($description)
{
$tag = 'description';
$this->setElement($tag, $description);
}
/**
* @desc Set the 'title' element of feed item
* @access public
* @param string The content of 'title' element
* @return void
*/
public function setTitle($title)
{
$this->setElement('title', $title);
}
/**
* Set the 'date' element of feed item
*
* @access public
* @param string The content of 'date' element
* @return void
*/
public function setDate($date)
{
if(! is_numeric($date))
{
$date = strtotime($date);
}
if($this->version == RSS2)
{
$tag = 'pubDate';
$value = date(DATE_RSS, $date);
}
else
{
$tag = 'dc:date';
$value = date("Y-m-d", $date);
}
$this->setElement($tag, $value);
}
/**
* Set the 'link' element of feed item
*
* @access public
* @param string The content of 'link' element
* @return void
*/
public function setLink($link)
{
if($this->version == RSS2 || $this->version == RSS1)
{
$this->setElement('link', $link);
$this->setElement('guid', $link);
}
else
{
$this->setElement('link','',array('href'=>$link));
$this->setElement('id', FeedWriter::uuid($link,'urn:uuid:'));
}
}
/**
* Set the 'source' element of feed item
*
* @access public
* @param string The content of 'source' element
* @return void
*/
public function setSource($link)
{
$this->setElement('source', $link);
}
/**
* Set the 'encloser' element of feed item
* For RSS 2.0 only
*
* @access public
* @param string The url attribute of encloser tag
* @param string The length attribute of encloser tag
* @param string The type attribute of encloser tag
* @return void
*/
public function setEncloser($url, $length, $type)
{
$attributes = array('url'=>$url, 'length'=>$length, 'type'=>$type);
$this->setElement('enclosure','',$attributes);
}
} // end of class FeedItem
?>
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