twentynineteen_nav_menu_link_attributes( array $atts, WP_Post $item, stdClass $args ): string[]
- Source
wp-content/themes/twentynineteen/inc/template-functions.php:183
Description
Adjustments to menu attributes to support WCAG 2.0 recommendations for flyout and dropdown menus.
Compatibility
- WordPress
- core
- 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
$attsarray- The HTML attributes applied to the menu item's
<a>element, empty strings are ignored.$titlestringTitle attribute.$targetstringTarget attribute.$relstringThe rel attribute.$hrefstringThe href attribute.$ariastring-current The aria-current attribute.
$itemWP_Post- The current menu item object.
$argsstdClass- An object of
wp_nav_menu()arguments.
Return value
string[]- Modified attributes.
Performance profile
How much work a call to twentynineteen_nav_menu_link_attributes() 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
- Scaling
- Constant
- Instructions
- 6–17
- Plugin surface
- None
- Called by
- 0
Touches nothing outside its own arguments.
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 17.
Nothing here hands control to plugin code.
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 twentynineteen_nav_menu_link_attributes() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 6–17 | none |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 17 | 6–17 | 3 | |
| 8.5 | 17 | 6–17 | 3 | |
| 8.4 | 17 | 6–17 | 3 | 3 fewer instructions than PHP 8.3 |
| 8.3 | 20 | 6–20 | 3 | |
| 8.2 | 20 | 6–20 | 3 | |
| 8.1 | 20 | 6–20 | 3 | |
| 7.4 | 20 | 6–20 | 3 |
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
function twentynineteen_nav_menu_link_attributes( $atts, $item, $args ) { // Check that this is the primary menu. if ( isset( $args->theme_location ) && 'menu-1' === $args->theme_location ) { // Add [aria-haspopup] and [aria-expanded] to menu items that have children. $item_has_children = in_array( 'menu-item-has-children', $item->classes, true ); if ( $item_has_children ) { $atts['aria-haspopup'] = 'true'; $atts['aria-expanded'] = 'false'; } } return $atts;}Changelog
One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
$args added.verified against sourceAbout this page
- Parsed data
- Generated from the wordpress-develop 7.1.0 tag, from
src/wp-content/themes/twentynineteen/inc/template-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.