tag_exists( int|string $tag_name )

Check whether a post tag with a given name exists.

Parameters

$tag_name: (int|string) (Required)

Return

(mixed)

Source

File: wp-admin/includes/taxonomy.php

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

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Changelog

Changelog
Version	Description
WP-2.3.0	Introduced.