下面是另一种使用get_term_field():

$count = get_term_field( \'count\', 17, \'post_tag\' );

if( is_int( $count ) && $count > 0 )
{
    // tag contains posts
}   

然后，我们可以创建自定义包装：

/**
 * Check if a term has any posts assigned to it
 *
 * @param  int|WP_Term|object $term
 * @param  string             $taxonomy 
 * @return bool 
 */
function wpse_term_has_posts( $term, $taxonomy )
{
    $count = get_term_field( \'count\', $term, $taxonomy );
    return is_int( $count ) && $count > 0;  
}

if( wpse_term_has_posts( 17, \'post_tag\' ) )
{
    // do stuff
}