
cPanel服务器管理面板概述
get_permalink ( $post = 0, $leavename = false )
get_permink函数是一个检索文章或页面URL的WordPress函数: 此函数接受一个参数,即要检索URL的文章或页面ID: 该函数返回文章或页面的URL。
检索当前文章或文章ID的完整固定链接。
function get_permalink( $post = 0, $leavename = false ) { $rewritecode = array( '%year%', '%monthnum%', '%day%', '%hour%', '%minute%', '%second%', $leavename ? '' : '%postname%', '%post_id%', '%category%', '%author%', $leavename ? '' : '%pagename%', ); if ( is_object( $post ) && isset( $post->filter ) && 'sample' === $post->filter ) { $sample = true; } else { $post = get_post( $post ); $sample = false; } if ( empty( $post->ID ) ) { return false; } if ( 'page' === $post->post_type ) { return get_page_link( $post, $leavename, $sample ); } elseif ( 'attachment' === $post->post_type ) { return get_attachment_link( $post, $leavename ); } elseif ( in_array( $post->post_type, get_post_types( array( '_builtin' => false ) ), true ) ) { return get_post_permalink( $post, $leavename, $sample ); } $permalink = get_option( 'permalink_structure' ); /** * Filters the permalink structure for a post before token replacement occurs. * * Only applies to posts with post_type of 'post'. * * @since 3.0.0 * * @param string $permalink The site's permalink structure. * @param WP_Post $post The post in question. * @param bool $leavename Whether to keep the post name. */ $permalink = apply_filters( 'pre_post_link', $permalink, $post, $leavename ); if ( $permalink && ! wp_force_plain_post_permalink( $post ) ) { $category = ''; if ( strpos( $permalink, '%category%' ) !== false ) { $cats = get_the_category( $post->ID ); if ( $cats ) { $cats = wp_list_sort( $cats, array( 'term_id' => 'ASC', ) ); /** * Filters the category that gets used in the %category% permalink token. * * @since 3.5.0 * * @param WP_Term $cat The category to use in the permalink. * @param array $cats Array of all categories (WP_Term objects) associated with the post. * @param WP_Post $post The post in question. */ $category_object = apply_filters( 'post_link_category', $cats[0], $cats, $post ); $category_object = get_term( $category_object, 'category' ); $category = $category_object->slug; if ( $category_object->parent ) { $category = get_category_parents( $category_object->parent, false, '/', true ) . $category; } } // Show default category in permalinks, // without having to assign it explicitly. if ( empty( $category ) ) { $default_category = get_term( get_option( 'default_category' ), 'category' ); if ( $default_category && ! is_wp_error( $default_category ) ) { $category = $default_category->slug; } } } $author = ''; if ( strpos( $permalink, '%author%' ) !== false ) { $authordata = get_userdata( $post->post_author ); $author = $authordata->user_nicename; } // This is not an API call because the permalink is based on the stored post_date value, // which should be parsed as local time regardless of the default PHP timezone. $date = explode( ' ', str_replace( array( '-', ':' ), ' ', $post->post_date ) ); $rewritereplace = array( $date[0], $date[1], $date[2], $date[3], $date[4], $date[5], $post->post_name, $post->ID, $category, $author, $post->post_name, ); $permalink = home_url( str_replace( $rewritecode, $rewritereplace, $permalink ) ); $permalink = user_trailingslashit( $permalink, 'single' ); } else { // If they're not using the fancy permalink option. $permalink = home_url( '?p=' . $post->ID ); } /** * Filters the permalink for a post. * * Only applies to posts with post_type of 'post'. * * @since 1.5.0 * * @param string $permalink The post's permalink. * @param WP_Post $post The post in question. * @param bool $leavename Whether to keep the post name. */ return apply_filters( 'post_link', $permalink, $post, $leavename ); }
在WordPress中,你可以使用 add_action
函数添加一个钩子函数。钩子函数是在特定事件发生时自动触发的函数。
add_action
函数的第一个参数是钩子名称,第二个参数是要执行的函数名,第三个参数是函数的优先级(可选)。
例如,添加一个在文章保存后执行的钩子函数的代码如下:
function my_save_post_function( $post_ID, $post ) { // 执行你的代码 } add_action( 'save_post', 'my_save_post_function', 10, 2 );
这里, save_post
是钩子名称, my_save_post_function
是要执行的函数名,10是函数的优先级,2是传递给钩子函数的参数数量。
wp_reset_query()
函数用于重置WordPress的查询。在自定义查询或修改查询参数之后,你可能需要使用这个函数来重置到默认的查询。例如:
// 自定义查询 $args = array( 'post_type' => 'product', 'posts_per_page' => 10, ); $custom_query = new WP_Query($args); // 重置查询 wp_reset_query();
创建自定义的WordPress插件需要以下步骤:
使用 get_post
和 get_page
获取单个文章或页面的详细信息:
// 获取文章或页面的ID $post_id = get_the_ID(); // 获取文章或页面的详细信息 $post = get_post($post_id); // 获取文章或页面的标题 $title = $post->post_title; // 获取文章或页面的内容 $content = $post->post_content;
wp_enqueue_script
和 wp_enqueue_style
函数的使用:
wp_enqueue_script()
:此函数位于wp-includes/script-loader.php文件中。它会将JavaScript文件添加到WordPress网站的页脚中。您可以在主题的functions.php文件中调用此函数,以添加自定义的JavaScript文件。wp_enqueue_style()
:此函数位于wp-includes/script-loader.php文件中。它会将CSS文件添加到WordPress网站的部分中。您可以在主题的functions.php文件中调用此函数,以添加自定义的CSS文件。使用 wp_head
和 wp_footer
在主题中添加自定义内容:
wp_head()
:此函数位于wp-includes/general-template.php文件中。它会在文档的部分中输出内容。您可以在主题的header.php文件中调用此函数,以在部分中添加自定义内容。wp_footer()
:此函数位于wp-includes/general-template.php文件中。它会在文档的部分中输出内容。您可以在主题的footer.php文件中调用此函数,以在部分中添加自定义内容。