wp_nav_menu_item_taxonomy_meta_box( string $data_object, array $box )

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$data_objectstring

Not used.

$boxarray

Taxonomy menu item meta box arguments.

• $idstring

  Meta box 'id' attribute.

• $titlestring

  Meta box title.

• $callbackcallable

  Meta box display callback.

• $argsobject

  Extra meta box arguments (the taxonomy object for this meta box).

Performance profile

How much work a call to wp_nav_menu_item_taxonomy_meta_box() 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 get_terms().

Scaling

Constant

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

Instructions

43–477

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 562.

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 it touches

• querycontent queryget_terms()called directly
• hookthird-party callbacksapply_filters()one call below wp_nav_menu_item_taxonomy_meta_box()

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 · 15 distinct outcomes

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

This body has more branch combinations than are worth enumerating, so the table covers the outcomes found first rather than every one that exists.

Uses · 20

• get_taxonomy()Retrieves the taxonomy object of $taxonomy.
• absint()Converts a value to non-negative integer.
• get_terms()Retrieves the terms in a given taxonomy or list of taxonomies.
• is_wp_error()Checks whether the given variable is a WordPress Error.
• __()Retrieves the translation of $text.
• wp_count_terms()Counts how many terms are in taxonomy.
• paginate_links()Retrieves paginated links for archive post pages.
• add_query_arg()Retrieves a modified URL query string.
• esc_attr__()Retrieves the translation of $text and escapes it for safe use in an attribute.
• is_taxonomy_hierarchical()Determines whether the taxonomy object is hierarchical.
• remove_query_arg()Removes an item or items from a query string.
• esc_attr()Escaping for HTML attributes.

Source code

View on Trac ↗View on GitHub ↗

861function wp_nav_menu_item_taxonomy_meta_box( $data_object, $box ) {862	global $nav_menu_selected_id;863 864	$taxonomy_name = $box['args']->name;865	$taxonomy      = get_taxonomy( $taxonomy_name );866	$tab_name      = $taxonomy_name . '-tab';867 868	// Paginate browsing for large numbers of objects.869	$per_page = 50;870	$pagenum  = isset( $_REQUEST[ $tab_name ] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;871	$offset   = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;872 873	$args = array(874		'taxonomy'     => $taxonomy_name,875		'child_of'     => 0,876		'exclude'      => '',877		'hide_empty'   => false,878		'hierarchical' => 1,879		'include'      => '',880		'number'       => $per_page,881		'offset'       => $offset,882		'order'        => 'ASC',883		'orderby'      => 'name',884		'pad_counts'   => false,885	);886 887	$terms = get_terms( $args );888 889	if ( ! $terms || is_wp_error( $terms ) ) {890		echo '<p>' . __( 'No items.' ) . '</p>';891		return;892	}893 894	$num_pages = (int) ceil(895		(int) wp_count_terms(896			array_merge(897				$args,898				array(899					'number' => '',900					'offset' => '',901				)902			)903		) / $per_page904	);905 906	$page_links = paginate_links(907		array(908			'base'               => add_query_arg(909				array(910					$tab_name     => 'all',911					'paged'       => '%#%',912					'item-type'   => 'taxonomy',913					'item-object' => $taxonomy_name,914				)915			),916			'format'             => '',917			'prev_text'          => '<span aria-label="' . esc_attr__( 'Previous page' ) . '">' . __( '&laquo;' ) . '</span>',918			'next_text'          => '<span aria-label="' . esc_attr__( 'Next page' ) . '">' . __( '&raquo;' ) . '</span>',919			/* translators: Hidden accessibility text. */920			'before_page_number' => '<span class="screen-reader-text">' . __( 'Page' ) . '</span> ',921			'total'              => $num_pages,922			'current'            => $pagenum,923		)924	);925 926	$db_fields = false;927	if ( is_taxonomy_hierarchical( $taxonomy_name ) ) {928		$db_fields = array(929			'parent' => 'parent',930			'id'     => 'term_id',931		);932	}933 934	$walker = new Walker_Nav_Menu_Checklist( $db_fields );935 936	$current_tab = 'most-used';937 938	if ( isset( $_REQUEST[ $tab_name ] ) && in_array( $_REQUEST[ $tab_name ], array( 'all', 'most-used', 'search' ), true ) ) {939		$current_tab = $_REQUEST[ $tab_name ];940	}

Changelog

Introduced in 3.0.0. 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-admin/includes/nav-menu.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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