PHP - 如何阅读带有限制的RSS源（分页）

Question

I know there are a lot of ways to read RSS in php just like

$rss = simplexml_load_file('http://rss.cnn.com/rss/edition.rss');
var_dump($rss);

and when I am searching for paginate the feeds and limit them by offset as any pagination example I found more than one way just like

• displaying rss feed with php pagination
• http://www.phpexpertsforum.com/display-rss-feeds-with-pagination-using-php-t2173.html
• http://bavotasan.com/2010/display-rss-feed-with-php/

all of them paginate the feeds after getting all of them form rss provider

my question is

"Is there any way to read the RSS feeds in paging way like twitter or facebook APIs?"

Thank you so much for your help

Answer 1

There's no generic way to do this will work with all providers - what they give you in response to your requests is up to them. Some can/will paginate, others won't - as you've discovered; most won't - they'll just give you back the RSS feed as is.

If you're trying to create a generic module, then it will need to be able to handle paginated feeds if it gets one. It will also either need to keep a white-list of providers which give you paginated feeds or learn to recognise paginated feeds when it receives them - and handle them appropriately.

There are lots of open source RSS readers/aggregators around who's source code you could look at for examples - http://tt-rss.org/redmine/projects/tt-rss/wiki is popular and written in PHP - you could look and see how they do it?