wp_widget_rss_process( array $widget_rss, bool $check_feed = true ): array
- Since
- 2.5.0
- Source
wp-includes/widgets.php:1795
Description
The feed widget can not have more than 20 items or it will reset back to the default, which is 10.
The resulting array has the feed title, feed url, feed link (from channel), feed items, error (if any), and whether to show summary, author, and date.
All respectively in the order of the array elements.
Compatibility
- WordPress
- since 2.5.0
- PHP
- 7.4–8.6-dev
- 6.7.7
- 6.8.8
- 6.9.7
- 7.0.4
- 7.1.0
Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.
Parameters
$widget_rssarray- RSS widget feed data. Expects unescaped data.
$check_feedbooloptional- Whether to check feed for errors. Default true.Default:
true
Return value
array
Performance profile
How much work a call to wp_widget_rss_process() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Light
- Scaling
- Scales with input
- Instructions
- 49–82
- Plugin surface
- None
- Called by
- 2
Touches nothing outside its own arguments.
The body loops, so the work grows with what you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 88.
Nothing here hands control to plugin code.
2 places in core call this, so the cost is paid more often than your own code shows.
What it touches
- hookthird-party callbacks
apply_filters()one call below wp_widget_rss_process()
Further down the call graph this can also reach option, cache, serialize, query and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.
What one call costs · 3 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_widget_rss_process() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 49–55 | strip_tags(), sanitize_url(), strip_tags(), compact() |
is_wp_error() | 61–67 | strip_tags(), sanitize_url(), strip_tags(), fetch_feed(), is_wp_error(), ->get_error_message(), compact() |
!is_wp_error() && $link === false | 76–82 | strip_tags(), sanitize_url(), strip_tags(), fetch_feed(), is_wp_error(), ->get_permalink(), strip_tags(), esc_url(), stristr(), ->__destruct(), compact() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 88 | 49–82 | 9 | |
| 8.5 | 88 | 49–82 | 9 | |
| 8.4 | 88 | 49–82 | 9 | 5 fewer instructions than PHP 8.3 |
| 8.3 | 93 | 51–84 | 9 | |
| 8.2 | 93 | 51–84 | 9 | |
| 8.1 | 93 | 51–84 | 9 | |
| 7.4 | 93 | 51–84 | 9 |
An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.
Uses · 4
- sanitize_url()Sanitizes a URL for database or redirect usage.
- fetch_feed()Builds SimplePie object based on RSS or Atom feed from URL.
- is_wp_error()Checks whether the given variable is a WordPress Error.
- esc_url()Checks and cleans a URL.
Used by · 2
- WP_Widget_RSS::update()Handles updating settings for the current RSS widget instance.
- wp_dashboard_rss_control()Sets up the RSS dashboard widget control and $args to be used as input to wp_widget_rss_form().
Source code
function wp_widget_rss_process( $widget_rss, $check_feed = true ) { $items = (int) $widget_rss['items']; if ( $items < 1 || 20 < $items ) { $items = 10; } $url = sanitize_url( strip_tags( $widget_rss['url'] ) ); $title = trim( strip_tags( $widget_rss['title'] ?? '' ) ); $show_summary = (int) ( $widget_rss['show_summary'] ?? 0 ); $show_author = (int) ( $widget_rss['show_author'] ?? 0 ); $show_date = (int) ( $widget_rss['show_date'] ?? 0 ); $error = false; $link = ''; if ( $check_feed ) { $rss = fetch_feed( $url ); if ( is_wp_error( $rss ) ) { $error = $rss->get_error_message(); } else { $link = esc_url( strip_tags( $rss->get_permalink() ) ); while ( stristr( $link, 'http' ) !== $link ) { $link = substr( $link, 1 ); } $rss->__destruct(); unset( $rss ); } } return compact( 'title', 'url', 'link', 'items', 'error', 'show_summary', 'show_author', 'show_date' );}Changelog
Introduced in 2.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
About this page
- Parsed data
- Generated from the wordpress-develop 7.0.4 tag, from
src/wp-includes/widgets.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it. - Corrections
- Something wrong on this page? Report it and it gets fixed in the next regeneration.