
WordPress预发布环境初学者指南
switch_to_blog ( $new_blog_id, $deprecated = null )
switch_to_blog: 这是一个WordPress函数,允许你在WordPress多站点安装中把当前站点切换到不同的站点: 这个函数只需要一个参数,即你想切换到的网站的ID。一旦切换完成,所有后续的WordPress函数和查询将被引导到新的站点,直到你切换回原来的站点。
切换当前博客。
如果你需要从其他博客中提取文章,或其他信息,这个函数很有用。你可以在事后用restore_current_blog()切换回来。
没有被切换的东西。 – plugins. See #14941
function switch_to_blog( $new_blog_id, $deprecated = null ) { global $wpdb; $prev_blog_id = get_current_blog_id(); if ( empty( $new_blog_id ) ) { $new_blog_id = $prev_blog_id; } $GLOBALS['_wp_switched_stack'][] = $prev_blog_id; /* * If we're switching to the same blog id that we're on, * set the right vars, do the associated actions, but skip * the extra unnecessary work */ if ( $new_blog_id == $prev_blog_id ) { /** * Fires when the blog is switched. * * @since MU (3.0.0) * @since 5.4.0 The `$context` parameter was added. * * @param int $new_blog_id New blog ID. * @param int $prev_blog_id Previous blog ID. * @param string $context Additional context. Accepts 'switch' when called from switch_to_blog() * or 'restore' when called from restore_current_blog(). */ do_action( 'switch_blog', $new_blog_id, $prev_blog_id, 'switch' ); $GLOBALS['switched'] = true; return true; } $wpdb->set_blog_id( $new_blog_id ); $GLOBALS['table_prefix'] = $wpdb->get_blog_prefix(); $GLOBALS['blog_id'] = $new_blog_id; if ( function_exists( 'wp_cache_switch_to_blog' ) ) { wp_cache_switch_to_blog( $new_blog_id ); } else { global $wp_object_cache; if ( is_object( $wp_object_cache ) && isset( $wp_object_cache->global_groups ) ) { $global_groups = $wp_object_cache->global_groups; } else { $global_groups = false; } wp_cache_init(); if ( function_exists( 'wp_cache_add_global_groups' ) ) { if ( is_array( $global_groups ) ) { wp_cache_add_global_groups( $global_groups ); } else { wp_cache_add_global_groups( array( 'blog-details', 'blog-id-cache', 'blog-lookup', 'blog_meta', 'global-posts', 'networks', 'sites', 'site-details', 'site-options', 'site-transient', 'rss', 'users', 'useremail', 'userlogins', 'usermeta', 'user_meta', 'userslugs', ) ); } wp_cache_add_non_persistent_groups( array( 'counts', 'plugins' ) ); } } /** This filter is documented in wp-includes/ms-blogs.php */ do_action( 'switch_blog', $new_blog_id, $prev_blog_id, 'switch' ); $GLOBALS['switched'] = true; return true; }