taxonomy_exists() – Function | Developer.WordPress.org

Determines whether the taxonomy name exists.

Description

Formerly is_taxonomy() , introduced in 2.3.0.

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

Parameters

$taxonomystringrequired: Name of taxonomy object.

Return

bool Whether the taxonomy exists.

Source

function taxonomy_exists( $taxonomy ) {
	global $wp_taxonomies;

	return is_string( $taxonomy ) && isset( $wp_taxonomies[ $taxonomy ] );
}

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Changelog

Version	Description
3.0.0	Introduced.

User Contributed Notes

Codex 9 years ago

Basic Example

$taxonomy_exist = taxonomy_exists( 'category' );
// Returns true

$taxonomy_exist = taxonomy_exists( 'post_tag' );
// Returns true

$taxonomy_exist = taxonomy_exists( 'link_category' );
// Returns true

$taxonomy_exist = taxonomy_exists( 'my_taxonomy' );
// Returns false if global $wp_taxonomies['my_taxonomy'] is not set

taxonomy_exists( string $taxonomy ): bool

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