Mamka
Сообщений: 560
Оценки: 0
Присоединился: 2007-11-26 22:20:09.313333
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Нашел такой вот скриптик, который преобразовывает xml rss в html-код.
<?php
$RSSFEEDS = array(
0 => "http://www.site-reference.com/xml.php?c=all",
1 => "http://rss.cnn.com/rss/cnn_topstories.rss",
2 => "http://rss.slashdot.org/Slashdot/slashdot",
);
//
// Makes a pretty HTML page bit from the title,
// description and link
//
function FormatRow($title, $description, $link) {
return "<HTML>
<!-- RSS FEED ENTRY -->
<p class='feed_title'>$title</p>
<p class='feed_description'>$description</p>
<a class='feed_link' href='$link' rel='nofollow' target='_blank'>Read more...</a>
<p> </p>
<hr size=1>
<!-- END OF RSS FEED ENTRY -->
<HTML>";
}
// we ll buffer the output
ob_start();
// Now we make sure that we have a feed selected to work with
if (!isset($feedid)) $feedid = 0;
$rss_url = $RSSFEEDS[$feedid];
// Server friendly page cache
$ttl = 60*60;// 60 secs/min for 60 minutes = 1 hour(360 secs)
$cachefilename = md5($rss_url);
if (file_exists($cachefilename) && (time() - $ttl < filemtime($cachefilename))) {
// We recently did the work, so we'll save bandwidth by not doing it again
include($cachefilename);
exit();
}
// Now we read the feed
$rss_feed = file_get_contents($rss_url);
// Now we replace a few things that may cause problems later
$rss_feed = str_replace("<![CDATA[", "", $rss_feed);
$rss_feed = str_replace("]]>", "", $rss_feed);
$rss_feed = str_replace("\n", "", $rss_feed);
// If there is an image node remove it, we aren't going to use
// it anyway and it often contains a <title> and <link>
// that we don't want to match on later.
$rss_feed = preg_replace('#<image>(.*?)</image>#', '', $rss_feed, 1 );
// Now we get the nodes that we're interested in
preg_match_all('#<title>(.*?)</title>#', $rss_feed, $title, PREG_SET_ORDER);
preg_match_all('#<link>(.*?)</link>#', $rss_feed, $link, PREG_SET_ORDER);
preg_match_all('#<description>(.*?)</description>#', $rss_feed, $description, PREG_SET_ORDER);
//
// Now that the RSS/XML is parsed.. Lets Make HTML !
//
// If there is not at least one title, then the feed was empty
// it happens sometimes, so lets be prepared and do something
// reasonable
if(count($title) <= 1)
{
echo "No news at present, please check back later.<br><br>";
}
else
{
// OK Here we go, this is the fun part
// Well do up the top 3 entries from the feed
for ($counter = 1; $counter <= 3; $counter++ )
{
// We do a reality check to make sure there is something we can show
if(!empty($title[$counter][1]))
{
// Then we'll make a good faith effort to make the title
// valid HTML
$title[$counter][1] = str_replace("&", "&", $title[$counter][1]);
$title[$counter][1] = str_replace("'", "'", $title[$counter][1]);
// The description often has encoded HTML entities in it, and
// we probably don't want these, so we'll decode them
$description[$counter][1] = html_entity_decode( $description[$counter][1]);
// Now we make a pretty page bit from the data we retrieved from
// the RSS feed. Remember the function FormatRow from the
// beginning of the program ? Here we put it to use.
$row = FormatRow($title[$counter][1],$description[$counter][1],$link[$counter][1]);
// And now we'll output the new page bit!
echo $row;
}
}
}
// Finally we'll save a copy of the pretty HTML we just created
// so that we can skip most of the work next time
$fp = fopen($cachefilename, 'w');
fwrite($fp, ob_get_contents());
fclose($fp);
// All Finished!
ob_end_flush(); // Send the output to the browser
?>
вроде бы все хорошо, но есть одно НО:
допустим строка
<a class='feed_link' href='$link' rel='nofollow' target='_blank'>Read more…</a>
ссылка на источник новости. Убираю эту строку из кода и…и…ничего не меняется, ссылка остается.
или строка
for ($counter = 1; $counter <= 3; $counter++ )
которая вроде как отвечает за то, сколько будет выведено новостей из rss на страницу. Меняю 3 на 7-выводит все-равно 3 новости.
Создается впечатление, что работаю не с этим файлом(делал специально синтаксиси иррор-страница запарывалась, так что все-таки с этим).
Я что то не так понял? помогите разобраться
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Проблема c RSS. PHP - 
