How to get primary category set via Yoast seo plugin in WordPress

Question

I have used a Yoast seo plugin and set primary category for product. But in front I cannot get primary category name.

Answer 1

The Yoast SEO plugin now has a dedicated function — yoast_get_primary_term_id() — for getting the primary term's ID:

$primary_term_id = yoast_get_primary_term_id( 'taxonomy_slug', $post_id_or_object );

You can then use get_term() to get the WP_Term object:

// Will return `false` if no primary term has been set
$primary_term_id = yoast_get_primary_term_id( 'taxonomy_slug', $post_id_or_object );

if ( $primary_term_id ) {
    /** @var WP_Term $primary_term */
    $primary_term = get_term( $primary_term_id );
}

For those scenarios where you just need the term's name, you can use yoast_get_primary_term():

// Will return an empty string if no primary term has been set
$primary_term_name = yoast_get_primary_term( 'taxonomy_slug', $post_id_or_object );