feedcreator.php

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		}
		$feed.= ">\n";
		$feed.= "	<title>".htmlspecialchars($this->title)."</title>\n";
		$feed.= "	<tagline>".htmlspecialchars($this->description)."</tagline>\n";
		$feed.= "	<link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars($this->link)."\"/>\n";
		$feed.= "	<id>".htmlspecialchars($this->link)."</id>\n";
		$now = new FeedDate();
		$feed.= "	<modified>".htmlspecialchars($now->iso8601())."</modified>\n";
		if ($this->editor!="") {
			$feed.= "	<author>\n";
			$feed.= "		<name>".$this->editor."</name>\n";
			if ($this->editorEmail!="") {
				$feed.= "		<email>".$this->editorEmail."</email>\n";
			}
			$feed.= "	</author>\n";
		}
		$feed.= "    <generator>".$this->generator."</generator>\n";
		$feed.= $this->_createAdditionalElements($this->additionalElements, "	");
		$feed.= $this->additionalMarkup;
		for ($i=0;$i<count($this->items);$i++) {
			$feed.= "	<entry>\n";
			$feed.= "		<title>".htmlspecialchars(strip_tags($this->items[$i]->title))."</title>\n";
			$feed.= "		<link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars($this->items[$i]->link)."\"/>\n";
			if ($this->items[$i]->date=="") {
				$this->items[$i]->date = time();
			}
			$itemDate = new FeedDate($this->items[$i]->date);
			$feed.= "		<created>".htmlspecialchars($itemDate->iso8601())."</created>\n";
			$feed.= "		<issued>".htmlspecialchars($itemDate->iso8601())."</issued>\n";
			$feed.= "		<modified>".htmlspecialchars($itemDate->iso8601())."</modified>\n";
			$feed.= "		<id>".htmlspecialchars($this->items[$i]->link)."</id>\n";
			$feed.= $this->_createAdditionalElements($this->items[$i]->additionalElements, "		");
			$feed.= $this->items[$i]->additionalMarkup;
			if ($this->items[$i]->author!="") {
				$feed.= "		<author>\n";
				$feed.= "			<name>".htmlspecialchars($this->items[$i]->author)."</name>\n";
				$feed.= "		</author>\n";
			}
			if ($this->items[$i]->description!="") {
				$feed.= "		<summary>".htmlspecialchars($this->items[$i]->description)."</summary>\n";
			}
			$feed.= "	</entry>\n";
		}
		$feed.= "</feed>\n";
		return $feed;
	}
}


/**
 * MBOXCreator is a FeedCreator that implements the mbox format
 * as described in http://www.qmail.org/man/man5/mbox.html
 *
 * @since 1.3
 * @author Kai Blankenhorn <[e-mail]>
 */
class MBOXCreator extends FeedCreator {

	function MBOXCreator() {
		$this->contentType = "text/plain";
		$this->encoding = "utf-8";
	}

	function qp_enc($input = "", $line_max = 76) {
		$hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F');
		$lines = preg_split("/(?:\r\n|\r|\n)/", $input);
		$eol = "\r\n";
		$escape = "=";
		$output = "";
		while( list(, $line) = each($lines) ) {
			//$line = rtrim($line); // remove trailing white space -> no =20\r\n necessary
			$linlen = strlen($line);
			$newline = "";
			for($i = 0; $i < $linlen; $i++) {
				$c = substr($line, $i, 1);
				$dec = ord($c);
				if ( ($dec == 32) && ($i == ($linlen - 1)) ) { // convert space at eol only
					$c = "=20";
				} elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) { // always encode "\t", which is *not* required
					$h2 = floor($dec/16); $h1 = floor($dec%16);
					$c = $escape.$hex["$h2"].$hex["$h1"];
				}
				if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted
					$output .= $newline.$escape.$eol; // soft line break; " =\r\n" is okay
					$newline = "";
				}
				$newline .= $c;
			} // end of for
			$output .= $newline.$eol;
		}
		return trim($output);
	}


	/**
	 * Builds the MBOX contents.
	 * @return	string	the feed's complete text
	 */
	function createFeed() {
		for ($i=0;$i<count($this->items);$i++) {
			if ($this->items[$i]->author!="") {
				$from = $this->items[$i]->author;
			} else {
				$from = $this->title;
			}
			$itemDate = new FeedDate($this->items[$i]->date);
			$feed.= "From ".strtr(MBOXCreator::qp_enc($from)," ","_")." ".date("D M d H:i:s Y",$itemDate->unix())."\n";
			$feed.= "Content-Type: text/plain;\n";
			$feed.= "	charset=\"".$this->encoding."\"\n";
			$feed.= "Content-Transfer-Encoding: quoted-printable\n";
			$feed.= "Content-Type: text/plain\n";
			$feed.= "From: \"".MBOXCreator::qp_enc($from)."\"\n";
			$feed.= "Date: ".$itemDate->rfc822()."\n";
			$feed.= "Subject: ".MBOXCreator::qp_enc(FeedCreator::iTrunc($this->items[$i]->title,100))."\n";
			$feed.= "\n";
			$body = chunk_split(MBOXCreator::qp_enc($this->items[$i]->description));
			$feed.= preg_replace("~\nFrom ([^\n]*)(\n?)~","\n>From $1$2\n",$body);
			$feed.= "\n";
			$feed.= "\n";
		}
		return $feed;
	}

	/**
	 * Generate a filename for the feed cache file. Overridden from FeedCreator to prevent XML data types.
	 * @return string the feed cache filename
	 * @since 1.4
	 * @access private
	 */
	function _generateFilename() {
		$fileInfo = pathinfo($_SERVER["PHP_SELF"]);
		return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".mbox";
	}
}


/**
 * OPMLCreator is a FeedCreator that implements OPML 1.0.
 *
 * @see http://opml.scripting.com/spec
 * @author Dirk Clemens, Kai Blankenhorn
 * @since 1.5
 */
class OPMLCreator extends FeedCreator {

	function OPMLCreator() {
		$this->encoding = "utf-8";
	}

	function createFeed() {
		$feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n";
		$feed.= $this->_createGeneratorComment();
		$feed.= $this->_createStylesheetReferences();
		$feed.= "<opml xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">\n";
		$feed.= "	<head>\n";
		$feed.= "		<title>".htmlspecialchars($this->title)."</title>\n";
		if ($this->pubDate!="") {
			$date = new FeedDate($this->pubDate);
			$feed.= "		 <dateCreated>".$date->rfc822()."</dateCreated>\n";
		}
		if ($this->lastBuildDate!="") {
			$date = new FeedDate($this->lastBuildDate);
			$feed.= "		 <dateModified>".$date->rfc822()."</dateModified>\n";
		}
		if ($this->editor!="") {
			$feed.= "		 <ownerName>".$this->editor."</ownerName>\n";
		}
		if ($this->editorEmail!="") {
			$feed.= "		 <ownerEmail>".$this->editorEmail."</ownerEmail>\n";
		}
		$feed.= "	</head>\n";
		$feed.= "	<body>\n";
		for ($i=0;$i<count($this->items);$i++) {
			$feed.= "	<outline type=\"rss\" ";
			$title = htmlspecialchars(strip_tags(strtr($this->items[$i]->title,"\n\r","  ")));
			$feed.= " title=\"".$title."\"";
			$feed.= " text=\"".$title."\"";
			//$feed.= " description=\"".htmlspecialchars($this->items[$i]->description)."\"";
			$feed.= " url=\"".htmlspecialchars($this->items[$i]->link)."\"";
			$feed.= "/>\n";
		}
		$feed.= "	</body>\n";
		$feed.= "</opml>\n";
		return $feed;
	}
}



/**
 * HTMLCreator is a FeedCreator that writes an HTML feed file to a specific
 * location, overriding the createFeed method of the parent FeedCreator.
 * The HTML produced can be included over http by scripting languages, or serve
 * as the source for an IFrame.
 * All output by this class is embedded in <div></div> tags to enable formatting
 * using CSS.
 *
 * @author Pascal Van Hecke
 * @since 1.7
 */
class HTMLCreator extends FeedCreator {

	var $contentType = "text/html";

	/**
	 * Contains HTML to be output at the start of the feed's html representation.
	 */
	var $header;

	/**
	 * Contains HTML to be output at the end of the feed's html representation.
	 */
	var $footer ;

	/**
	 * Contains HTML to be output between entries. A separator is only used in
	 * case of multiple entries.
	 */
	var $separator;

	/**
	 * Used to prefix the stylenames to make sure they are unique
	 * and do not clash with stylenames on the users' page.
	 */
	var $stylePrefix;

	/**
	 * Determines whether the links open in a new window or not.
	 */
	var $openInNewWindow = true;

	var $imageAlign ="right";

	/**
	 * In case of very simple output you may want to get rid of the style tags,
	 * hence this variable.  There's no equivalent on item level, but of course you can
	 * add strings to it while iterating over the items ($this->stylelessOutput .= ...)
	 * and when it is non-empty, ONLY the styleless output is printed, the rest is ignored
	 * in the function createFeed().
	 */
	var $stylelessOutput ="";

	/**
	 * Writes the HTML.
	 * @return	string	the scripts's complete text
	 */
	function createFeed() {
		// if there is styleless output, use the content of this variable and ignore the rest
		if ($this->stylelessOutput!="") {
			return $this->stylelessOutput;
		}

		//if no stylePrefix is set, generate it yourself depending on the script name
		if ($this->stylePrefix=="") {
			$this->stylePrefix = str_replace(".", "_", $this->_generateFilename())."_";
		}

		//set an openInNewWindow_token_to be inserted or not
		if ($this->openInNewWindow) {
			$targetInsert = " target='_blank'";
		}

		// use this array to put the lines in and implode later with "document.write" javascript
		$feedArray = array();
		if ($this->image!=null) {
			$imageStr = "<a href='".$this->image->link."'".$targetInsert.">".
							"<img src='".$this->image->url."' border='0' alt='".
							FeedCreator::iTrunc(htmlspecialchars($this->image->title),100).
							"' align='".$this->imageAlign."' ";
			if ($this->image->width) {
				$imageStr .=" width='".$this->image->width. "' ";
			}
			if ($this->image->height) {
				$imageStr .=" height='".$this->image->height."' ";
			}
			$imageStr .="/></a>";
			$feedArray[] = $imageStr;
		}

		if ($this->title) {
			$feedArray[] = "<div class='".$this->stylePrefix."title'><a href='".$this->link."' ".$targetInsert." class='".$this->stylePrefix."title'>".
				FeedCreator::iTrunc(htmlspecialchars($this->title),100)."</a></div>";
		}
		if ($this->getDescription()) {
			$feedArray[] = "<div class='".$this->stylePrefix."description'>".
				str_replace("]]>", "", str_replace("<![CDATA[", "", $this->getDescription())).
				"</div>";
		}

		if ($this->header) {
			$feedArray[] = "<div class='".$this->stylePrefix."header'>".$this->header."</div>";
		}

		for ($i=0;$i<count($this->items);$i++) {
			if ($this->separator and $i > 0) {
				$feedArray[] = "<div class='".$this->stylePrefix."separator'>".$this->separator."</div>";
			}

			if ($this->items[$i]->title) {
				if ($this->items[$i]->link) {
					$feedArray[] =
						"<div class='".$this->stylePrefix."item_title'><a href='".$this->items[$i]->link."' class='".$this->stylePrefix.
						"item_title'".$targetInsert.">".FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100).
						"</a></div>";
				} else {
					$feedArray[] =
						"<div class='".$this->stylePrefix."item_title'>".
						FeedCreator::iTrunc(htmlspecialchars(strip_tags($this->items[$i]->title)),100).
						"</div>";
				}
			}
			if ($this->items[$i]->getDescription()) {
				$feedArray[] =
				"<div class='".$this->stylePrefix."item_description'>".
					str_replace("]]>", "", str_replace("<![CDATA[", "", $this->items[$i]->getDescription())).
					"</div>";
			}
		}
		if ($this->footer) {
			$feedArray[] = "<div class='".$this->stylePrefix."footer'>".$this->footer."</div>";
		}

		$feed= "".join($feedArray, "\r\n");
		return $feed;
	}

	/**
	 * Overrrides parent to produce .html extensions
	 *
	 * @return string the feed cache filename
	 * @since 1.4
	 * @access private
	 */
	function _generateFilename() {
		$fileInfo = pathinfo($_SERVER["PHP_SELF"]);
		return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".html";
	}
}


/**
 * JSCreator is a class that writes a js file to a specific
 * location, overriding the createFeed method of the parent HTMLCreator.
 *
 * @author Pascal Van Hecke
 */
class JSCreator extends HTMLCreator {
	var $contentType = "text/javascript";

	/**
	 * writes the javascript
	 * @return	string	the scripts's complete text
	 */
	function createFeed()
	{
		$feed = parent::createFeed();
		$feedArray = explode("\n",$feed);

		$jsFeed = "";
		foreach ($feedArray as $value) {
			$jsFeed .= "document.write('".trim(addslashes($value))."');\n";
		}
		return $jsFeed;
	}

	/**
	 * Overrrides parent to produce .js extensions
	 *
	 * @return string the feed cache filename
	 * @since 1.4
	 * @access private
	 */
	function _generateFilename() {
		$fileInfo = pathinfo($_SERVER["PHP_SELF"]);
		return substr($fileInfo["basename"],0,-(strlen($fileInfo["extension"])+1)).".js";
	}

}


/**
* GoogleSiteMapIndex is a FeedCreator that implements Google Sitemap Index 0.84.
*
* @see https://www.google.com/webmasters/sitemaps/docs/en/protocol.html#sitemapFileRequirements
* taken from http://phpbb.bitfolge.de/viewtopic.php?t=102
*/
class GoogleSiteMapIndex extends FeedCreator {
	/**
	* Builds the Google Sitemap feed's text.
	* The feed will contain all items previously added in the same order.
	* @return string the feed's complete text
	*/
	function createFeed() {
		$feed 	= "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
		$feed	.= "<sitemapindex xmlns=\"http://www.google.com/schemas/sitemap/0.84\"\n";
		$feed	.= "			  xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
		$feed	.= "			  xsi:schemaLocation=\"http://www.google.com/schemas/sitemap/0.84\n";
		$feed	.= "			  http://www.google.com/schemas/sitemap/0.84/siteindex.xsd\">\n";

		$total = count( $this->items ) ;
		for ( $i=0; $i < $total; $i++ ) {
			$feed	.= "  <sitemap>\n";
			$feed	.= "	<loc>".htmlspecialchars($this->items[$i]->link)."</loc>\n";
			if ( $this->items[$i]->date != "" ) {
				$itemDate 	= new FeedDate( $this->items[$i]->date );
				$feed		.= "	<lastmod>".htmlspecialchars($itemDate->iso8601())."</lastmod>\n";
			}
			$feed.= "  </sitemap>\n";
		}
		$feed.= "</sitemapindex>\n";

		return $feed;
	}
}

/*** TEST SCRIPT *********************************************************

//include("feedcreator.class.php");

$rss = new UniversalFeedCreator();
$rss->useCached();
$rss->title = "PHP news";
$rss->description = "daily news from the PHP scripting world";

//optional
//$rss->descriptionTruncSize = 500;
//$rss->descriptionHtmlSyndicated = true;
//$rss->xslStyleSheet = "http://feedster.com/rss20.xsl";

$rss->link = "http://www.dailyphp.net/news";
$rss->feedURL = "http://www.dailyphp.net/".$PHP_SELF;

$image = new FeedImage();
$image->title = "dailyphp.net logo";
$image->url = "http://www.dailyphp.net/images/logo.gif";
$image->link = "http://www.dailyphp.net";
$image->description = "Feed provided by dailyphp.net. Click to visit.";

//optional
$image->descriptionTruncSize = 500;
$image->descriptionHtmlSyndicated = true;

$rss->image = $image;

// get your news items from somewhere, e.g. your database:
//mysql_select_db($dbHost, $dbUser, $dbPass);
//$res = mysql_query("SELECT * FROM news ORDER BY newsdate DESC");
//while ($data = mysql_fetch_object($res)) {
	$item = new FeedItem();
	$item->title = "This is an the test title of an item";
	$item->link = "http://localhost/item/";
	$item->description = "<b>description in </b><br />HTML";

	//optional
	//item->descriptionTruncSize = 500;
	$item->descriptionHtmlSyndicated = true;

	$item->date = time();
	$item->source = "http://www.dailyphp.net";
	$item->author = "John Doe";

	$rss->addItem($item);
//}

// valid format strings are: RSS0.91, RSS1.0, RSS2.0, PIE0.1, MBOX, OPML, ATOM0.3, HTML, JS
echo $rss->saveFeed("RSS0.91", "feed.xml");



***************************************************************************/