wppaste
WordPress

twentyfifteen_nav_description( string $item_output, WP_Post $item, int $depth, stdClass $args ): string

Since
Twenty Fifteen 1.0
Source
wp-content/themes/twentyfifteen/functions.php:581
Displays descriptions in main navigation.

Compatibility

WordPress
since Twenty Fifteen 1.0
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

$item_outputstring
The menu item's starting HTML output.
$itemWP_Post
Menu item data object.
$depthint
Depth of the menu. Used for padding.
$argsstdClass
An object of wp_nav_menu() arguments.

Return value

string
Menu item with possible description.

Performance profile

How much work a call to twentyfifteen_nav_description() 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
Trivial

Touches nothing outside its own arguments.

Scaling
Constant

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

Instructions
8–21

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 21.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

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 twentyfifteen_nav_description() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always8–21none

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev218–212
8.5218–212
8.4218–2123 fewer instructions than PHP 8.3
8.3248–242
8.2248–242
8.1248–242
7.4248–242

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.

Source code

View on Trac View on GitHub 

function twentyfifteen_nav_description( $item_output, $item, $depth, $args ) {	if ( 'primary' === $args->theme_location && $item->description ) {		$item_output = str_replace( $args->link_after . '</a>', '<div class="menu-item-description">' . $item->description . '</div>' . $args->link_after . '</a>', $item_output );	} 	return $item_output;}

Changelog

Introduced in Twenty Fifteen 1.0. 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-content/themes/twentyfifteen/functions.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.