wppaste
WordPress

get_bloginfo_rss( string $show = '' ): string

Since
1.5.1
Source
wp-includes/feed.php:27
Retrieves RSS container for the bloginfo function.

Description

You can retrieve anything that you can using the get_bloginfo() function.
Everything will be stripped of tags and characters converted, when the values are retrieved for use in the feeds.

Compatibility

WordPress
since 1.5.1
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

$showstringoptional
See get_bloginfo() for possible values.Default: ''

Return value

string

Performance profile

How much work a call to get_bloginfo_rss() 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
Moderate

Reads stored settings via get_option(), cached per request but not free on a cold cache.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
17

Executed per call on PHP 8.5. The body compiles to 17.

Plugin surface
1 hook

Third-party callbacks on 'get_bloginfo_rss' run inside this call, and their cost is not bounded by anything here.

Called by
5

5 places in core call this, so the cost is paid more often than your own code shows.

What it touches

  • hookthird-party callbacksapply_filters()called directly
  • optionoption read or writeget_option()one call below get_bloginfo_rss()

Further down the call graph this can also reach 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 · 1 distinct outcome

One number would be a lie: the work depends on which branch runs. These are every distinct cost get_bloginfo_rss() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always17get_bloginfo(), strip_tags(), convert_chars(), apply_filters()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 17 instructions, 17 executed per call, 0 branches. The work does not change between versions.

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.

Hooks and filters fired · 1

One hook fires while get_bloginfo_rss() runs, in this order:

  1. apply_filters( get_bloginfo_rss )filterline 40 (+13 into the body)

    Filters the bloginfo for use in RSS feeds.

Uses · 3

Used by · 5

Source code

View on Trac View on GitHub 

function get_bloginfo_rss( $show = '' ) {	$info = strip_tags( get_bloginfo( $show ) );	/**	 * Filters the bloginfo for use in RSS feeds.	 *	 * @since 2.2.0	 *	 * @see convert_chars()	 * @see get_bloginfo()	 *	 * @param string $info Converted string value of the blog information.	 * @param string $show The type of blog information to retrieve.	 */	return apply_filters( 'get_bloginfo_rss', convert_chars( $info ), $show );}

Changelog

Introduced in 1.5.1. Unchanged from 6.7.7 through 7.1.0.

  1. 6.7.7
  2. 6.8.8
  3. 6.9.7
  4. 7.0.4
  5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/feed.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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