php这种写法什么意思？
<br />if ( defined('WP_USE_THEMES') && WP_USE_THEMES ) :<br /> $template = false;<br /> if ( is_404() && $template = get_404_template() ) :<br /> elseif ( is_search() && $template = get_search_template() ) :<br /> elseif ( is_front_page() && $template = get_front_page_template() ) :<br /> elseif ( is_home() && $template = get_home_template() ) :<br /> elseif ( is_post_type_archive() && $template = get_post_type_archive_template() ) :<br /> elseif ( is_tax() && $template = get_taxonomy_template() ) :<br /> elseif ( is_attachment() && $template = get_attachment_template() ) :<br /> remove_filter('the_content', 'prepend_attachment');<br /> elseif ( is_single() && $template = get_single_template() ) :<br /> elseif ( is_page() && $template = get_page_template() ) :<br /> elseif ( is_category() && $template = get_category_template() ) :<br /> elseif ( is_tag() && $template = get_tag_template() ) :<br /> elseif ( is_author() && $template = get_author_template() ) :<br /> elseif ( is_date() && $template = get_date_template() ) :<br /> elseif ( is_archive() && $template = get_archive_template() ) :<br /> elseif ( is_comments_popup() && $template = get_comments_popup_template() ) :<br /> elseif ( is_paged() && $template = get_paged_template() ) :<br /> else :<br /> $template = get_index_template();<br /> endif;<br /> /**<br /> * Filter the path of the current template before including it.<br /> *<br /> * @since 3.0.0<br /> *<br /> * @param string $template The path of the template to include.<br /> */<br /> if ( $template = apply_filters( 'template_include', $template ) )<br /> include( $template );<br /> return;<br />endif;<br />
