tag_exists


      tag_exists ( $tag_name )

参数

返回值

(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.

定义位置

Checks whether a post tag with a given name exists.

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