wppaste
WordPress

get_the_taxonomies( int|WP_Post $post = 0, array $args = array() ): string[]

Since
2.5.0
Source
wp-includes/taxonomy.php:4820
Retrieves all taxonomies associated with a post.

Description

This function can be used within the loop. It will also return an array of the taxonomies with links to the taxonomy and name.

Compatibility

WordPress
since 2.5.0
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

$postint|WP_Postoptional
Post ID or WP_Post object. Default is global $post.Default: 0
$argsarrayoptional
Arguments about how to format the list of taxonomies. Default empty array.Default: array()

  • $templatestringdefault: is the term name linked to its archive

    Template for displaying a taxonomy label and list of terms. Default is "Label: Terms." @type string $term_template Template for displaying a single term in the list.

Return value

string[]
List of taxonomies.

Performance profile

How much work a call to get_the_taxonomies() 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_post().

Scaling
Scales with input

The body loops, so the work grows with what you pass in.

Instructions
19–25

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 104.

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 queryget_post()called directly
  • cacheobject cachewp_cache_get()one call below get_the_taxonomies()
  • hookthird-party callbacksapply_filters()one call below get_the_taxonomies()

Further down the call graph this can also reach option, 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 · 2 distinct outcomes

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

WhenInstructionsCalls it makes
always19get_post(), __(), template()
always24–25get_post(), __(), template(), get_object_taxonomies()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 104 instructions, 19–25 executed per call, 11 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 · 10

  • get_post()Retrieves post data given a post ID or post object.
  • wp_parse_args()Merges user defined arguments into defaults array.
  • __()Retrieves the translation of $text.
  • get_object_taxonomies()Returns the names or objects of the taxonomies which are registered for the requested object or object type, such as a post object or post type name.
  • get_taxonomy()Retrieves the taxonomy object of $taxonomy.
  • get_object_term_cache()Retrieves the cached term objects for the given object ID.
  • wp_get_object_terms()Retrieves the terms associated with the given object(s), in the supplied taxonomies.
  • wp_sprintf()WordPress' implementation of PHP sprintf() with filters.
  • esc_attr()Escaping for HTML attributes.
  • get_term_link()Generates a permalink for a taxonomy term archive.

Used by · 1

Source code

View on Trac View on GitHub 

function get_the_taxonomies( $post = 0, $args = array() ) {	$post = get_post( $post ); 	$args = wp_parse_args(		$args,		array(			/* translators: %s: Taxonomy label, %l: List of terms formatted as per $term_template. */			'template'      => __( '%s: %l.' ),			'term_template' => '<a href="%1$s">%2$s</a>',		)	); 	$taxonomies = array(); 	if ( ! $post ) {		return $taxonomies;	} 	foreach ( get_object_taxonomies( $post ) as $taxonomy ) {		$t = (array) get_taxonomy( $taxonomy );		if ( empty( $t['label'] ) ) {			$t['label'] = $taxonomy;		}		if ( empty( $t['args'] ) ) {			$t['args'] = array();		}		if ( empty( $t['template'] ) ) {			$t['template'] = $args['template'];		}		if ( empty( $t['term_template'] ) ) {			$t['term_template'] = $args['term_template'];		} 		$terms = get_object_term_cache( $post->ID, $taxonomy );		if ( false === $terms ) {			$terms = wp_get_object_terms( $post->ID, $taxonomy, $t['args'] );		}		$links = array(); 		foreach ( $terms as $term ) {			$links[] = wp_sprintf( $t['term_template'], esc_attr( get_term_link( $term ) ), $term->name );		}		if ( $links ) {			$taxonomies[ $taxonomy ] = wp_sprintf( $t['template'], $t['label'], $links, $terms );		}	}	return $taxonomies;}

Changelog

Introduced in 2.5.0. 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/taxonomy.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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