unregister_taxonomy_for_object_type( string $taxonomy, string $object_type ): bool

Compatibility

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

Parameters

$taxonomystring

Name of taxonomy object.

$object_typestring

Name of the object type.

Return value

bool

True if successful, false if not.

Performance profile

How much work a call to unregister_taxonomy_for_object_type() 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

Touches nothing outside its own arguments.

Scaling

Constant

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

Instructions

6–28

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 31.

Plugin surface

1 hook

Third-party callbacks on 'unregistered_taxonomy_for_object_type' run inside this call, and their cost is not bounded by anything here.

Called by

1

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

What it touches

• hookthird-party callbacksdo_action()called directly

What one call costs · 4 distinct outcomes

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

Hooks and filters fired · 1

One hook fires while unregister_taxonomy_for_object_type() runs, in this order:

1. 1
   do_action( unregistered_taxonomy_for_object_type )actionline 836 (+26 into the body)

   Fires after a taxonomy is unregistered for an object type.

Uses · 2

• get_post_type_object()Retrieves a post type object by name.
• do_action()Calls the callback functions that have been added to an action hook.

Used by · 1

• WP_Post_Type::unregister_taxonomies()Removes the post type from all taxonomies.

Source code

View on Trac ↗View on GitHub ↗

810function unregister_taxonomy_for_object_type( $taxonomy, $object_type ) {811	global $wp_taxonomies;812 813	if ( ! isset( $wp_taxonomies[ $taxonomy ] ) ) {814		return false;815	}816 817	if ( ! get_post_type_object( $object_type ) ) {818		return false;819	}820 821	$key = array_search( $object_type, $wp_taxonomies[ $taxonomy ]->object_type, true );822	if ( false === $key ) {823		return false;824	}825 826	unset( $wp_taxonomies[ $taxonomy ]->object_type[ $key ] );827 828	/**829	 * Fires after a taxonomy is unregistered for an object type.830	 *831	 * @since 5.1.0832	 *833	 * @param string $taxonomy    Taxonomy name.834	 * @param string $object_type Name of the object type.835	 */836	do_action( 'unregistered_taxonomy_for_object_type', $taxonomy, $object_type );837 838	return true;839}

Changelog

Introduced in 3.7.0. 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 7.1.0 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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