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WP_REST_Menu_Items_Controller::get_menu_id( int $menu_item_id ): int

Since
5.9.0
Source
wp-includes/rest-api/endpoints/class-wp-rest-menu-items-controller.php:1030
Gets the id of the menu that the given menu item belongs to.

Compatibility

WordPress
since 5.9.0
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

$menu_item_idint
Menu item id.

Return value

int

Performance profile

How much work a call to WP_REST_Menu_Items_Controller::get_menu_id() 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
Heavy

Reaches the database via wp_get_object_terms().

Scaling
Constant

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

Instructions
10–18

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 18.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
1

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

What it touches

  • querycontent querywp_get_object_terms()one call below WP_REST_Menu_Items_Controller::get_menu_id()
  • hookthird-party callbacksdo_action()one call below WP_REST_Menu_Items_Controller::get_menu_id()

Further down the call graph this can also reach option, cache, serialize 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_REST_Menu_Items_Controller::get_menu_id() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always10wp_get_post_terms()
is_wp_error()14wp_get_post_terms(), is_wp_error()
!is_wp_error()18wp_get_post_terms(), is_wp_error(), array_shift()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 18 instructions, 10–18 executed per call, 2 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.

Uses · 2

Used by · 1

Source code

View on Trac View on GitHub 

	protected function get_menu_id( $menu_item_id ) {		$menu_ids = wp_get_post_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) );		$menu_id  = 0;		if ( $menu_ids && ! is_wp_error( $menu_ids ) ) {			$menu_id = array_shift( $menu_ids );		} 		return $menu_id;	}

Changelog

Introduced in 5.9.0. 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 6.9.7 tag, from src/wp-includes/rest-api/endpoints/class-wp-rest-menu-items-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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