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WordPress中获取页面链接和标题的相关PHP函数用法

2020-03-22 20:22:46
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get_permalink()(获取文章或页面链接)
get_permalink() 用来根据固定连接返回文章或者页面的链接。在获取链接时 get_permalink() 函数需要知道要获取的文章的 ID,如果在循环中则自动默认使用当前文章。用法get_permalink( $id, $leavename );参数$id(混合)(可选)文章或者页面的 ID(整数);还可以是文章对象。默认值:在循环中自动调用当前的文章$leavename(布尔)(可选)转化成链接是是否忽略文章别名。如果设置成 True,那么将返回 http://www.example.com/%postname% 而不是 http://www.example.com/my-post-name默认值:None返回值(字符串 | 布尔)成功获取链接则返回链接,失败则返回 False.例子根据 ID 获取文章或页面的链接: a href=" php echo get_permalink( 268 ); " 获取指定 ID 的文章或页面链接 /a 循环中获取当前文章的链接: php echo get_permalink(); 根据页面标题获取页面链接: a href=" php echo esc_url( get_permalink( get_page_by_title( '留言板' ) ) ); " 留言板 /a 其它此函数位于:wp-includes/link-template.phpwp_title()(获取网页标题)
wp_title() 用来获取当前网页的标题,也就是 title 标签里边的内容。wp_title() 能在不同的页面自动生成不同的标题(比如首页就是网站标题、文章页就是文章标题)。WordPress 官方的主题都在使用这个函数生成标题,但是在国内的主题中却总是被忽视(因为默认情况下这个函数对 SEO 并不是太好)。我还是推荐使用这个函数调用标题,更加符合主题开发规范,如果你要让他变的更加符合 SEO,可以使用过滤器优化一下,本文结尾有优化方法。用法wp_title( $sep, $display, $seplocation );参数$sep(字符串)(可选)标题内容的分隔符,一般设置成 “|” 或者 “-”。默认值: ( )$display(布尔)(可选)是否直接打印标题,如果设置成 False 则返回标题,可以存储到变量里。默认值:True(直接打印输出)$seplocation(字符串)(可选)分隔符所在位置,左边还是右边,如果传递 “right” 则为右边,其它任何内容都是左边。默认值:空字符串(左边)返回值(字符串)如果 $display 参数设置成 False,才能返回标题的内容,根据不同的标题会返回不同的内容,默认情况下返回的内容是这样的: 文章页:文章标题 日期页:日期 分类页:分类标题 作者页:作者名字如果你想更加详细的了解,可以阅读下边的函数源码:
* Display or retrieve page title for all areas of blog. * By default, the page title will display the separator before the page title, * so that the blog title will be before the page title. This is not good for * title display, since the blog title shows up on most tabs and not what is * important, which is the page that the user is looking at. * There are also SEO benefits to having the blog title after or to the 'right' * or the page title. However, it is mostly common sense to have the blog title * to the right with most browsers supporting tabs. You can achieve this by * using the seplocation parameter and setting the html' target='_blank'>value to 'right'. This change * was introduced around 2.5.0, in case backwards compatibility of themes is * important. * @since 1.0.0 * @param string $sep Optional, default is ' '. How to separate the various items within the page title. * @param bool $display Optional, default is true. Whether to display or retrieve title. * @param string $seplocation Optional. Direction to display title, 'right'. * @return string|null String on retrieve, null when displaying.function wp_title($sep = ' ', $display = true, $seplocation = '') { global $wp_locale; $m = get_query_var('m'); $year = get_query_var('year'); $monthnum = get_query_var('monthnum'); $day = get_query_var('day'); $search = get_query_var('s'); $title = ''; $t_sep = '%WP_TITILE_SEP%'; // Temporary separator, for accurate flipping, if necessary // If there is a post if ( is_single() || ( is_home() && !is_front_page() ) || ( is_page() && !is_front_page() ) ) { $title = single_post_title( '', false ); // If there's a post type archive if ( is_post_type_archive() ) { $post_type = get_query_var( 'post_type' ); if ( is_array( $post_type ) ) $post_type = reset( $post_type ); $post_type_object = get_post_type_object( $post_type ); if ( ! $post_type_object- has_archive ) $title = post_type_archive_title( '', false ); // If there's a category or tag if ( is_category() || is_tag() ) { $title = single_term_title( '', false ); // If there's a taxonomy if ( is_tax() ) { $term = get_queried_object(); if ( $term ) { $tax = get_taxonomy( $term- taxonomy ); $title = single_term_title( $tax- labels- name . $t_sep, false ); // If there's an author if ( is_author() && ! is_post_type_archive() ) { $author = get_queried_object(); if ( $author ) $title = $author- display_name; // Post type archives with has_archive should override terms. if ( is_post_type_archive() && $post_type_object- has_archive ) $title = post_type_archive_title( '', false ); // If there's a month if ( is_archive() && !empty($m) ) { $my_year = substr($m, 0, 4); $my_month = $wp_locale- get_month(substr($m, 4, 2)); $my_day = intval(substr($m, 6, 2)); $title = $my_year . ( $my_month $t_sep . $my_month : '' ) . ( $my_day $t_sep . $my_day : '' ); // If there's a year if ( is_archive() && !empty($year) ) { $title = $year; if ( !empty($monthnum) ) $title .= $t_sep . $wp_locale- get_month($monthnum); if ( !empty($day) ) $title .= $t_sep . zeroise($day, 2); // If it's a search if ( is_search() ) { /* translators: 1: separator, 2: search phrase */ $title = sprintf(__('Search Results %1$s %2$s'), $t_sep, strip_tags($search)); // If it's a 404 page if ( is_404() ) { $title = __('Page not found'); $prefix = ''; if ( !empty($title) ) $prefix = " $sep "; * Filter the parts of the page title. * @since 4.0.0 * @param array $title_array Parts of the page title. $title_array = apply_filters( 'wp_title_parts', explode( $t_sep, $title ) ); // Determines position of the separator and direction of the breadcrumb if ( 'right' == $seplocation ) { // sep on right, so reverse the order $title_array = array_reverse( $title_array ); $title = implode( " $sep ", $title_array ) . $prefix; } else { $title = $prefix . implode( " $sep ", $title_array ); * Filter the text of the page title. * @since 2.0.0 * @param string $title Page title. * @param string $sep Title separator. * @param string $seplocation Location of the separator (left or right). $title = apply_filters( 'wp_title', $title, $sep, $seplocation ); // Send it out if ( $display ) echo $title; else return $title;很显然默认情况下标题是比较简陋的,对 SEO 并不是很友好。例子 title php wp_title( '|', true, 'right' ); /title 其它标题可以使用 wp_title 过滤器定制,此函数位于:wp-includes/general-template.phpPHP教程

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