tag_exists( int|string $tag_name ): mixed

Checks whether a post tag with a given name exists.

Parameters

$tag_nameint|stringrequired

Return

mixed Returns null if the term does not exist.
Returns an array of the term ID and the term taxonomy ID if the pairing exists.
Returns 0 if term ID 0 is passed to the function.

Source

function tag_exists( $tag_name ) {
	return term_exists( $tag_name, 'post_tag' );
}

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Uses	Description
term_exists()`wp-includes/taxonomy.php`	Determines whether a taxonomy term exists.

Changelog

Version	Description
2.3.0	Introduced.

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