WordPress函数fetch_rss从URL构建基于RSS的Magpie对象，fetch_rss()函数位于rss.php，但自3.0.0版本起，已不建议使用rss.php，因此，推荐使用fetch_feed()函数。
fetch_rss( string $url )
函数参数
$url
字符串
Feed URL地址
函数返回值
成功返回MagpieRSS，失败返回false
MagpieRSS Object
(
[parser] =>
[current_item] => Array
(
)
[items] => Array
(
[0] => Array
(
[title] => WordPress快速添加用户函数：wp_create_user
[link] => https://www.beizigen.com/post/wordpress-function-wp_create_user/
[dc] => Array
(
[creator] => 背字根
)
[pubdate] => Tue, 05 Apr 2022 08:03:20 +0000
[category] => 开发WP函数
[guid] => https://www.beizigen.com/?p=3753
[description] => WordPress函数wp_create_user用于插入新用户，与wp_insert_user()函数相比较 […]
[summary] => WordPress函数wp_create_user用于插入新用户，与wp_insert_user()函数相比较 […]
)
......
)
[channel] => Array
(
[link] => https://www.beizigen.com
[description] => 开发运营笔记
[lastbuilddate] => Tue, 05 Apr 2022 08:04:10 +0000
[language] => zh-CN
[sy] => Array
(
[updateperiod] => hourly
[updatefrequency] => 1
)
[generator] => https://wordpress.org/?v=5.9.3
[tagline] => 开发运营笔记
)
[textinput] => Array
(
)
[image] => Array
(
[url] => https://www.beizigen.com/wp-content/uploads/2022/04/cropped-favicon-32x32.webp
[title] => 背字根
[link] => https://www.beizigen.com
[width] => 32
[height] => 32
)
[feed_type] => RSS
[feed_version] => 2.0
[stack] => Array
(
)
[inchannel] =>
[initem] =>
[incontent] =>
[intextinput] =>
[inimage] =>
[current_field] =>
[current_namespace] =>
[_CONTENT_CONSTRUCTS] => Array
(
[0] => content
[1] => summary
[2] => info
[3] => title
[4] => tagline
[5] => copyright
)
[last_modified] => Tue, 05 Apr 2022 08:04:27 GMT
[etag] =>
[from_cache] => 1
)
函数使用示例
include_once(ABSPATH . WPINC . '/rss.php');
$rss = fetch_rss('https://www.beizigen.com/feed/');
$rss_items = array_slice($rss->items, 0, 5);
if(empty($rss_items)) {
echo '没有文章';
} else {
foreach($rss_items as $item) {
echo '' . $item['title'] . ' ';
}
}
扩展阅读
fetch_rss()函数位于：wp-includes/rss.php
相关函数：
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