賢威7.1用のサブページのタイトル変更関数

//---------------------------------------------------------------------------
//	タイトルの表示する関数
//---------------------------------------------------------------------------

$subpage_title = "ここにサブページタイトル";


if ( ! function_exists( 'title_keni' ) ) {
	function title_keni( $blogname = true, $sep = " | " ) {
		echo get_title_keni();
	}
}

if ( ! function_exists( 'get_title_keni' ) ) {
	function get_title_keni( $blogname = true, $sep = " | " ) {

global $subpage_title;

		$title = "";

		if ( is_front_page() ) {
			$title = ( trim( the_keni( 'top_title' ) ) != "" ) ? trim( the_keni( 'top_title' ) ) : trim( get_bloginfo( 'name' ) );

		} elseif ( is_home() ) {
			// TODO 解読する
			$post_page = get_option( 'page_for_posts' );
			if ( ! empty( $post_page ) && $post_page > 0 ) {
				$top_page_data = get_post( $post_page );
				$title         = $top_page_data->post_title;
			} else {
				if ( ( get_option( 'page_for_posts' ) > 0 ) && ( get_the_ID() != get_option( 'page_on_front' ) ) ) {
					$title = trim( get_the_title( 'name' ) );
				} else {
					$title = trim( get_bloginfo( 'name' ) );
				}
			}

			if ( is_home() && get_query_var( 'paged' ) > 1 ) {
				$title = sprintf( __( 'Archive List for %s', 'keni' ), $title );
			}

		} elseif ( is_singular() ) {
			$title     = trim( get_the_title() );
			$this_page = pageNumber();
			if ( $this_page['now_page'] > 1 ) {
				$title .= "（" . $this_page['now_page'] . "/" . $this_page['max_pages'] . __( 'Pages', 'keni' ) . "）";
			}

		} elseif ( is_category() || is_tag() ) {
			$title = get_archive_title_keni( "n" );
		} elseif ( is_day() ) {
			$title = sprintf( __( 'Archive List for %s', 'keni' ), get_the_time( __( 'F j, Y', 'keni' ) ) );
		} elseif ( is_month() ) {
			$title = sprintf( __( 'Archive List for %s', 'keni' ), get_the_time( __( 'F Y', 'keni' ) ) );
		} elseif ( is_year() ) {
			$title = sprintf( __( 'Archive List for %s', 'keni' ), get_the_time( __( 'Y', 'keni' ) ) );
		} elseif ( is_author() ) {
			if ( have_posts() ):
				while ( have_posts() ): the_post();
					$title = get_the_author_meta( 'display_name' ) . sprintf( __( 'Archive List for authors', 'keni' ) );
				endwhile;
				wp_reset_query();
			endif;

		} elseif ( is_post_type_archive() ) {
			$title = wp_title( '', false, 'right' );
		} elseif ( is_archive() ) {
			$title = sprintf( __( 'Archive List for blog', 'keni' ) );
		} elseif ( is_search() ) {
			$title = sprintf( __( 'Search Result for %s', 'keni' ), get_search_query() );
		} elseif ( is_404() ) {
			$title = sprintf( __( 'Sorry, but you are looking for something that isn’t here.', 'keni' ) );
		} else {
			$title = wp_title( '', false, 'right' );
		}

		if ( $title == "" ) {
			$title = get_bloginfo( 'name' );
		}

		if ( get_query_var( 'paged' ) > 1 ) {
			$title .= show_page_number();
		}

		if ( is_page() || is_single() ) {
			if ( ! is_front_page() && the_keni( 'view_site_title' ) != "n" && ( ( ( get_post_meta( get_the_ID(), "title_view", true ) ) == null ) || ( get_post_meta( get_the_ID(), "title_view", true ) == "y" ) ) ) {
				$title .= $sep . $subpage_title;
			}
		} elseif ( ( ! is_front_page() && ! is_home() ) && the_keni( 'view_site_title' ) != "n" ) {
			$title .= $sep . $subpage_title;
		}

		wp_reset_query();

		return esc_html( $title );
	}
}