wppaste
WordPress

the_taxonomies( array $args = array() )

Since
2.5.0
Source
wp-includes/taxonomy.php:4755
Displays the taxonomies of a post with available options.

Description

This function can be used within the loop to display the taxonomies for a post without specifying the Post ID. You can also use it outside the Loop to display the taxonomies for a specific post.

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

$argsarrayoptional
Arguments about which post to use and how to format the output. Shares all of the arguments supported by get_the_taxonomies(), in addition to the following.Default: array()

  • $postint|WP_Postdefault: current post

    Post ID or object to get taxonomies of.

  • $beforestringdefault: empty string

    Displays before the taxonomies.

  • $sepstringdefault: is a space

    Separates each taxonomy.

  • $afterstringdefault: empty string

    Displays after the taxonomies.

Performance profile

How much work a call to 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
Constant

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

Instructions
21

Executed per call on PHP 8.5. 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 it touches

  • querycontent queryget_post()one call below the_taxonomies()

Further down the call graph this can also reach hook, cache, 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 · 1 distinct outcome

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

WhenInstructionsCalls it makes
always21wp_parse_args(), get_the_taxonomies()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev21210
8.521210
8.4212103 fewer instructions than PHP 8.3
8.324240
8.224240
8.124240
7.424240

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

Source code

View on Trac View on GitHub 

function the_taxonomies( $args = array() ) {	$defaults = array(		'post'   => 0,		'before' => '',		'sep'    => ' ',		'after'  => '',	); 	$parsed_args = wp_parse_args( $args, $defaults ); 	echo $parsed_args['before'] . implode( $parsed_args['sep'], get_the_taxonomies( $parsed_args['post'], $parsed_args ) ) . $parsed_args['after'];}

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 6.7.7 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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