问题
I have to produce an RSS/Atom feed in various applications, and I want to know a good library or class which is able to produce both, and which already handles all common problems.
For example, the one I used for years does not put the right format for date, so my feed is not well-handled by several aggregators.
Update: Why I am looking for a library? Because the one I used for years, which I had hacked a few times, has a little problem. Maybe a specification is not being correctly followed.
Why does my RSS feed duplicate some entries?
回答1:
The PHP Universal Feed Generator seems to be exactly what you're after - it has a simple, OO-based way of declaring a new feed and outputting it to your desired specification.
It also has built-in date format conversions as one of it's features.
Features:
- Generates RSS 1.0, RSS 2.0 and ATOM 1.0 feeds
- All feeds are are validated by feed validator.
- Implements appropriate namespaces for different versions.
- Automatically converts date formats.
- Generates UUID for ATOM feeds.
- Handles CDATA encoding for required tags.
Supported versions:
- RSS 1.0 (which officially obsoleted RSS 0.90)
- RSS 2.0 (which officially obsoleted RSS 0.91, 0.92, 0.93 and 0.94)
- ATOM 1.0
回答2:
Do you really need a library? Choose format and simply follow its specification to output valid XML.
Here is some tutorial to get started.
回答3:
Hmmm, IMO, unless you want enclosures, both of these formats are easy enough to craft without any classes. E.g. for the RSS feeds of a website that I administrate, I simply wrote a small Smarty template, and it works pretty smoothly.
回答4:
For non-english charsets take a look at the PHP function htmlentities: http://php.net/manual/en/function.htmlentities.php
I've just added to support croatian charset:
$nodeText .= (in_array($tagName, $this->CDATAEncoding))? $tagContent : htmlentities($tagContent, ENT_COMPAT, 'UTF-8');
回答5:
PHP Universal Feed Generator is a good answer. I had just to modify the code accordingly to a comment on the webpage to handle correcly french characters.
http://www.ajaxray.com/blog/2008/03/08/php-universal-feed-generator-supports-rss-10-rss-20-and-atom/#comment-341
Like Kereste says (1. June) FeedWrite makes problems with some none-english utf-8 characters like ä etc.. this is because xml only knows 5 entities (&,”,’,). So I changed line 298 in the source code into
$nodeText .= (in_array($tagName, $this->CDATAEncoding))? $tagContent : str_replace ( array ( ‘&’, ‘”‘, “‘”, ” ), array ( ‘&’ , ‘"’, ‘'’ , ‘<’ , ‘>’ ), $tagContent);
to avoiod converting charakters into wrong xml entities.
来源：https://stackoverflow.com/questions/182510/the-best-php-lib-class-to-generate-rss-atom