在函数中。php：

function wpse82525_link_search_to_tag()
{
    // check if search archive is being displayed
    if( ! is_search() )
        return;

    // get search query var
    $sqv = get_query_var( \'s\' );

    // get tag base
    $tagbase = get_option( \'permalink_structure\' ) 
        ? get_option( \'tag_base\' ) 
            ? trailingslashit( get_option( \'tag_base\' ) )
            : \'tag/\' 
        : \'?tag=\';

    // return link if matching tag is found
    return ( get_term_by( \'slug\', $sqv, \'post_tag\' ) )
        ? \'<p>\' . sprintf( 
            __( \'Are you looking for our <a href="%1$s">%2$s</a> page?\', \'txtdomain\' ),
            home_url( $tagbase . sanitize_title_with_dashes( $sqv ) ),
            $sqv
        ) . \'</p>\'
        : \'\';
}

<?php echo wpse82525_link_search_to_tag(); ?>