php实现的RSS生成类实例_PHP教程

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class RSS

{

var $title;

var $link;

var $description;

var $language = "en-us";

var $pubDate;

var $items;

var $tags;

function RSS()

{

$this->items = array();

$this->tags = array();

}

function addItem($item)

{

$this->items[] = $item;

}

function setPubDate($when)

{

if(strtotime($when) == false)

$this->pubDate = date("D, d M Y H:i:s ", $when) . "GMT";

else

$this->pubDate = date("D, d M Y H:i:s ", strtotime($when)) . "GMT";

}

function getPubDate()

{

if(empty($this->pubDate))

return date("D, d M Y H:i:s ") . "GMT";

else

return $this->pubDate;

}

function addTag($tag, $value)

{

$this->tags[$tag] = $value;

}

function out()

{

$out = $this->header();

$out .= "\n";

$out .= "\n";

$out .= "" . $this->link . "\n";

$out .= "" . $this->description . "\n";

$out .= "" . $this->language . "\n";

$out .= "" . $this->getPubDate() . "\n";

foreach($this->tags as $key => $val) $out .= "<$key>$val\n";

foreach($this->items as $item) $out .= $item->out();

$out .= "\n";

$out .= $this->footer();

$out = str_replace("&", "&", $out);

return $out;

}

function serve($contentType = "application/xml")

{

$xml = $this->out();

header("Content-type: $contentType");

echo $xml;

}

function header()

{

$out = '' . "\n";

$out .= '' . "\n";

return $out;

}

function footer()

{

return '';

}

}

class RSSItem

{

var $title;

var $link;

var $description;

var $pubDate;

var $guid;

var $tags;

var $attachment;

var $length;

var $mimetype;

function RSSItem()

{

$this->tags = array();

}

function setPubDate($when)

{

if(strtotime($when) == false)

$this->pubDate = date("D, d M Y H:i:s ", $when) . "GMT";

else

$this->pubDate = date("D, d M Y H:i:s ", strtotime($when)) . "GMT";

}

function getPubDate()

{

if(empty($this->pubDate))

return date("D, d M Y H:i:s ") . "GMT";

else

return $this->pubDate;

}

function addTag($tag, $value)

{

$this->tags[$tag] = $value;

}

function out()

{

$out .= "\n";

$out .= "\n";

$out .= "" . $this->link . "\n";

$out .= "" . $this->description . "\n";

$out .= "" . $this->getPubDate() . "\n";

if($this->attachment != "")

$out .= "";

if(empty($this->guid)) $this->guid = $this->link;

$out .= "" . $this->guid . "\n";

foreach($this->tags as $key => $val) $out .= "<$key>$val";

$out .= "\n";

return $out;

}

function enclosure($url, $mimetype, $length)

{

$this->attachment = $url;

$this->mimetype = $mimetype;

$this->length = $length;

}

}

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$feed = new RSS();

$feed->title = "RSS Feed Title";

$feed->link = "http://website.com";

$feed->description = "Recent articles on your website.";

$db->query($query);

$result = $db->result;

while($row = mysql_fetch_array($result, MYSQL_ASSOC))

{

$item = new RSSItem();

$item->title = $title;

$item->link = $link;

$item->setPubDate($create_date);

$item->description = "";

$feed->addItem($item);

}

echo $feed->serve();