Ticket #5272: bp-blogs-classes.php

<?php
//Includes also  fix based on https://buddypress.trac.wordpress.org/ticket/5303
/**
 * BuddyPress Blogs Classes.
 *
 * @package BuddyPress
 * @subpackage BlogsClasses
 */
// Exit if accessed directly
if (!defined('ABSPATH'))
    exit;

/**
 * The main BuddyPress blog class.
 *
 * A BP_Blogs_Object represents a link between a specific WordPress blog on a
 * network and a specific user on that blog.
 *
 * @since BuddyPress (1.0.0)

 */
class BP_Blogs_Blog {

    public $id;
    public $user_id;
    public $blog_id;

    /**
     * Constructor method.
     *
     * @param int $id Optional. The ID of the blog.
     */
    public function __construct($id = null) {
        if (!empty($id)) {
            $this->id = $id;
            $this->populate();
        }
    }

    /**
     * Populate the object with data about the specific activity item.
     */
    public function populate() {
        global $wpdb, $bp;

        $blog = $wpdb->get_row($wpdb->prepare("SELECT * FROM {$bp->blogs->table_name} WHERE id = %d", $this->id));

        $this->user_id = $blog->user_id;
        $this->blog_id = $blog->blog_id;
    }

    /**
     * Save the BP blog data to the database.
     *
     * @return bool True on success, false on failure.
     */
    public function save() {
        global $wpdb, $bp;

        $this->user_id = apply_filters('bp_blogs_blog_user_id_before_save', $this->user_id, $this->id);
        $this->blog_id = apply_filters('bp_blogs_blog_id_before_save', $this->blog_id, $this->id);

        do_action_ref_array('bp_blogs_blog_before_save', array(&$this));

        // Don't try and save if there is no user ID or blog ID set.
        if (!$this->user_id || !$this->blog_id)
            return false;

        // Don't save if this blog has already been recorded for the user.
        if (!$this->id && $this->exists())
            return false;

        if ($this->id) {
            // Update
            $sql = $wpdb->prepare("UPDATE {$bp->blogs->table_name} SET user_id = %d, blog_id = %d WHERE id = %d", $this->user_id, $this->blog_id, $this->id);
        } else {
            // Save
            $sql = $wpdb->prepare("INSERT INTO {$bp->blogs->table_name} ( user_id, blog_id ) VALUES ( %d, %d )", $this->user_id, $this->blog_id);
        }

        if (!$wpdb->query($sql))
            return false;

        do_action_ref_array('bp_blogs_blog_after_save', array(&$this));

        if ($this->id)
            return $this->id;
        else
            return $wpdb->insert_id;
    }

    /**
     * Check whether an association between this user and this blog exists.
     *
     * @return int The number of associations between the user and blog
     *         saved in the blog component tables.
     */
    public function exists() {
        global $bp, $wpdb;

        return $wpdb->get_var($wpdb->prepare("SELECT COUNT(id) FROM {$bp->blogs->table_name} WHERE user_id = %d AND blog_id = %d", $this->user_id, $this->blog_id));
    }

    /** Static Methods ************************************************** */

    /**
     * Retrieve a set of blog-user associations.
     * @param array $args {
     *     An array of arguments. All items are optional.
     * @param string $type The order in which results should be returned.
     *        'active', 'alphabetical', 'newest', or 'random'.
     * @param int|bool $limit Optional. The maximum records to return.
     *        Default: false.
     * @param int|bool $page Optional. The page of records to return.
     *        Default: false (unlimited results).
     * @param int $user_id Optional. ID of the user whose blogs are being
     *        retrieved. Default: 0.
     * @param string|bool $search_terms Optional. Search by text stored in
     *        blogmeta (such as the blog name). Default: false.
     * @param bool $show_hidden. Whether to include private blogs of user
     * }
     * @return array Multidimensional results array, structured as follows:
     *           'blogs' - Array of located blog objects
     *           'total' - A count of the total blogs matching the filter params
     *
     * @version 2, stergatu merged all func arguments into an array and added show hidden
     *
     */
    public static function get($args = array()) {
        global $bp, $wpdb;
        // Backward compatibility with old method of passing arguments
        if (!is_array($args) || func_num_args() > 1) {
            _deprecated_argument(__METHOD__, '2', sprintf(__('Arguments passed to %1$s should be in an associative array. See the inline documentation at %2$s for more details.', 'buddypress'), __METHOD__, __FILE__));

            $old_args_keys = array(
                0 => 'type',
                1 => 'per_page',
                2 => 'page',
                3 => 'user_id',
                4 => 'search_terms',
                5 => 'show_hidden',
            );

            $func_args = func_get_args();
            $args = bp_core_parse_args_array($old_args_keys, $func_args);
        }

        $defaults = array(
            'type' => 'active',
            'per_page' => false,
            'page' => false,
            'user_id' => 0,
            'search_terms' => false, // Terms to search by
            'show_hidden' => false, // Show blogs marked hidden
        );
        $r = wp_parse_args($args, $defaults);
        extract($r);


        $hidden_sql = '';
        if (!bp_is_my_profile() && !$show_hidden && !bp_current_user_can('bp_moderate'))
            $hidden_sql = " AND wb.public = 1";

        $pag_sql = ( $per_page && $page ) ? $wpdb->prepare(" LIMIT %d, %d", intval(( $page - 1 ) * $per_page), intval($per_page)) : '';

        $user_sql = !empty($user_id) ? $wpdb->prepare(" AND b.user_id = %d", $user_id) : '';

        switch ($type) {
            case 'active': default:
                $order_sql = "ORDER BY bm.meta_value DESC";
                break;
            case 'alphabetical':
                $order_sql = "ORDER BY bm2.meta_value ASC";
                break;
            case 'newest':
                $order_sql = "ORDER BY wb.registered DESC";
                break;
            case 'random':
                $order_sql = "ORDER BY RAND()";
                break;
        }

        if (!empty($search_terms)) {
            $filter = esc_sql(like_escape($search_terms));
            $paged_blogs = $wpdb->get_results("SELECT b.blog_id, b.user_id as admin_user_id, u.user_email as admin_user_email, wb.domain, wb.path, bm.meta_value as last_activity, bm2.meta_value as name FROM {$bp->blogs->table_name} b, {$bp->blogs->table_name_blogmeta} bm, {$bp->blogs->table_name_blogmeta} bm2, {$wpdb->base_prefix}blogs wb, {$wpdb->users} u WHERE b.blog_id = wb.blog_id AND b.user_id = u.ID AND b.blog_id = bm.blog_id AND b.blog_id = bm2.blog_id AND wb.archived = '0' AND wb.spam = 0 AND wb.mature = 0 AND wb.deleted = 0 {$hidden_sql} AND bm.meta_key = 'last_activity' AND bm2.meta_key = 'name' AND bm2.meta_value LIKE '%%$filter%%' {$user_sql} GROUP BY b.blog_id {$order_sql} {$pag_sql}");
            $total_blogs = $wpdb->get_var("SELECT COUNT(DISTINCT b.blog_id) FROM {$bp->blogs->table_name} b, {$wpdb->base_prefix}blogs wb, {$bp->blogs->table_name_blogmeta} bm, {$bp->blogs->table_name_blogmeta} bm2 WHERE b.blog_id = wb.blog_id AND bm.blog_id = b.blog_id AND bm2.blog_id = b.blog_id AND wb.archived = '0' AND wb.spam = 0 AND wb.mature = 0 AND wb.deleted = 0 {$hidden_sql} AND bm.meta_key = 'name' AND bm2.meta_key = 'description' AND ( bm.meta_value LIKE '%%$filter%%' || bm2.meta_value LIKE '%%$filter%%' ) {$user_sql}");
        } else {
            $paged_blogs = $wpdb->get_results("SELECT b.blog_id, b.user_id as admin_user_id, u.user_email as admin_user_email, wb.domain, wb.path, bm.meta_value as last_activity, bm2.meta_value as name FROM {$bp->blogs->table_name} b, {$bp->blogs->table_name_blogmeta} bm, {$bp->blogs->table_name_blogmeta} bm2, {$wpdb->base_prefix}blogs wb, {$wpdb->users} u WHERE b.blog_id = wb.blog_id AND b.user_id = u.ID AND b.blog_id = bm.blog_id AND b.blog_id = bm2.blog_id {$user_sql} AND wb.archived = '0' AND wb.spam = 0 AND wb.mature = 0 AND wb.deleted = 0 {$hidden_sql} AND bm.meta_key = 'last_activity' AND bm2.meta_key = 'name' GROUP BY b.blog_id {$order_sql} {$pag_sql}");
            $total_blogs = $wpdb->get_var("SELECT COUNT(DISTINCT b.blog_id) FROM {$bp->blogs->table_name} b, {$wpdb->base_prefix}blogs wb WHERE b.blog_id = wb.blog_id {$user_sql} AND wb.archived = '0' AND wb.spam = 0 AND wb.mature = 0 AND wb.deleted = 0 {$hidden_sql}");
        }

        $blog_ids = array();
        foreach ((array) $paged_blogs as $blog) {
            $blog_ids[] = (int) $blog->blog_id;
        }

        $paged_blogs = BP_Blogs_Blog::get_blog_extras($paged_blogs, $blog_ids, $type);

        return array('blogs' => $paged_blogs, 'total' => $total_blogs);
    }

    /**
     * Delete the record of a given blog for all users.
     *
     * @param int $blog_id The blog being removed from all users.
     * @return int|bool Number of rows deleted on success, false on failure.
     */
    public static function delete_blog_for_all($blog_id) {
        global $wpdb, $bp;

        bp_blogs_delete_blogmeta($blog_id);
        return $wpdb->query($wpdb->prepare("DELETE FROM {$bp->blogs->table_name} WHERE blog_id = %d", $blog_id));
    }

    /**
     * Delete the record of a given blog for a specific user.
     *
     * @param int $blog_id The blog being removed.
     * @param int $user_id Optional. The ID of the user from whom the blog
     *        is being removed. If absent, defaults to the logged-in user ID.
     * @return int|bool Number of rows deleted on success, false on failure.
     */
    public static function delete_blog_for_user($blog_id, $user_id = null) {
        global $wpdb, $bp;

        if (!$user_id)
            $user_id = bp_loggedin_user_id();

        return $wpdb->query($wpdb->prepare("DELETE FROM {$bp->blogs->table_name} WHERE user_id = %d AND blog_id = %d", $user_id, $blog_id));
    }

    /**
     * Delete all of a user's blog associations in the BP tables.
     *
     * @param int $user_id Optional. The ID of the user whose blog
     *        associations are being deleted. If absent, defaults to
     *        logged-in user ID.
     * @return int|bool Number of rows deleted on success, false on failure.
     */
    public static function delete_blogs_for_user($user_id = null) {
        global $wpdb, $bp;

        if (!$user_id)
            $user_id = bp_loggedin_user_id();

        return $wpdb->query($wpdb->prepare("DELETE FROM {$bp->blogs->table_name} WHERE user_id = %d", $user_id));
    }

    /**
     * Get all of a user's blogs, as tracked by BuddyPress.
     *
     * Note that this is different from the WordPress function
     * {@link get_blogs_of_user()}; the current method returns only those
     * blogs that have been recorded by BuddyPress, while the WP function
     * does a true query of a user's blog capabilities.
     *
     * @param int $user_id Optional. ID of the user whose blogs are being
     *        queried. Defaults to logged-in user.
     * @param bool $show_hidden Optional. Whether to include blogs that are
     *        not marked public. Defaults to true when viewing one's own
     *        profile.
     * @return array Multidimensional results array, structured as follows:
     *           'blogs' - Array of located blog objects
     *           'total' - A count of the total blogs for the user.

      @version 2 stergatu
     */
    public static function get_blogs_for_user($user_id = 0, $show_hidden = false) {
        global $bp, $wpdb;

        if (!$user_id)
            $user_id = bp_displayed_user_id();

// Show logged in users their hidden blogs or user can moderate
        if (!bp_is_my_profile() && !$show_hidden && !bp_current_user_can('bp_moderate'))
            $blogs = $wpdb->get_results($wpdb->prepare("SELECT DISTINCT b.blog_id, b.id, bm1.meta_value as name, wb.domain, wb.path FROM {$bp->blogs->table_name} b, {$wpdb->base_prefix}blogs wb, {$bp->blogs->table_name_blogmeta} bm1 WHERE b.blog_id = wb.blog_id AND b.blog_id = bm1.blog_id AND bm1.meta_key = 'name' AND wb.public = 1 AND wb.deleted = 0 AND wb.spam = 0 AND wb.mature = 0 AND wb.archived = '0' AND b.user_id = %d ORDER BY b.blog_id", $user_id));
        else
            $blogs = $wpdb->get_results($wpdb->prepare("SELECT DISTINCT b.blog_id, b.id, bm1.meta_value as name, wb.domain, wb.path FROM {$bp->blogs->table_name} b, {$wpdb->base_prefix}blogs wb, {$bp->blogs->table_name_blogmeta} bm1 WHERE b.blog_id = wb.blog_id AND b.blog_id = bm1.blog_id AND bm1.meta_key = 'name' AND wb.deleted = 0 AND wb.spam = 0 AND wb.mature = 0 AND wb.archived = '0' AND b.user_id = %d ORDER BY b.blog_id", $user_id));

        $total_blog_count = BP_Blogs_Blog::total_blog_count_for_user($user_id, $show_hidden);

        $user_blogs = array();

        foreach ((array) $blogs as $blog) {
            $user_blogs[$blog->blog_id] = new stdClass;
            $user_blogs[$blog->blog_id]->id = $blog->id;
            $user_blogs[$blog->blog_id]->blog_id = $blog->blog_id;
            $user_blogs[$blog->blog_id]->siteurl = ( is_ssl() ) ? 'https://' . $blog->domain . $blog->path : 'http://' . $blog->domain . $blog->path;
            $user_blogs[$blog->blog_id]->name = $blog->name;
        }

        return array('blogs' => $user_blogs, 'count' => $total_blog_count);
    }

    /**
     * Get IDs of all of a user's blogs, as tracked by BuddyPress.
     *
     * This method always includes hidden blogs.
     *
     * @param int $user_id Optional. ID of the user whose blogs are being
     *        queried. Defaults to logged-in user.
     * @return int The number of blogs associated with the user.
     */
    public static function get_blog_ids_for_user($user_id = 0) {
        global $bp, $wpdb;

        if (!$user_id)
            $user_id = bp_displayed_user_id();

        return $wpdb->get_col($wpdb->prepare("SELECT blog_id FROM {$bp->blogs->table_name} WHERE user_id = %d", $user_id));
    }

    /**
     * Check whether a blog has been recorded by BuddyPress.
     *
     * @param int $blog_id ID of the blog being queried.
     * @return int|null The ID of the first located entry in the BP table
     *         on success, otherwise null.
     */
    public static function is_recorded($blog_id) {
        global $bp, $wpdb;

        return $wpdb->get_var($wpdb->prepare("SELECT id FROM {$bp->blogs->table_name} WHERE blog_id = %d", $blog_id));
    }

    /**
     * Return a count of associated blogs for a given user.
     *
     * Includes hidden blogs when the logged-in user is the same as the
     * $user_id parameter, or when the logged-in user has the bp_moderate
     * cap.
     *
     * @param int $user_id Optional. ID of the user whose blogs are being
     *        queried. Defaults to logged-in user.
     * @param type $show_hidden
     * @return int Blog count for the user.
     * @version 2.0, stergatu on 22/11/2013
     */
    public static function total_blog_count_for_user($user_id = null, $show_hidden = false) {
        global $bp, $wpdb;

        if (!$user_id)
            $user_id = bp_displayed_user_id();


        // Show logged in users their hidden blogs or show also hidden user's blog.
        if (!bp_is_my_profile() && !$show_hidden && !bp_current_user_can('bp_moderate'))
            return $wpdb->get_var($wpdb->prepare("SELECT COUNT(DISTINCT b.blog_id) FROM {$bp->blogs->table_name} b LEFT JOIN {$wpdb->base_prefix}blogs wb ON b.blog_id = wb.blog_id WHERE wb.public = 1 AND wb.deleted = 0 AND wb.spam = 0 AND wb.mature = 0 AND wb.archived = '0' AND user_id = %d", $user_id));
        else
            return $wpdb->get_var($wpdb->prepare("SELECT COUNT(DISTINCT b.blog_id) FROM {$bp->blogs->table_name} b LEFT JOIN {$wpdb->base_prefix}blogs wb ON b.blog_id = wb.blog_id WHERE wb.deleted = 0 AND wb.spam = 0 AND wb.mature = 0 AND wb.archived = '0' AND user_id = %d", $user_id));
    }

    /**
     * Return a list of blogs matching a search term.
     *
     * Matches against blog names and descriptions, as stored in the BP
     * blogmeta table.
     *
     * @param string $filter The search term.
     * @param int $limit Optional. The maximum number of items to return.
     *        Default: null (no limit).
     * @param int $page Optional. The page of results to return. Default:
     *        null (no limit).
     * @return array Multidimensional results array, structured as follows:
     *           'blogs' - Array of located blog objects
     *           'total' - A count of the total blogs matching the query.
     * @version 2 stergatu
     */
    public static function search_blogs($filter, $per_page = null, $page = null, $show_hidden = FALSE) {
        global $wpdb, $bp;

        $filter = esc_sql(like_escape($filter));

        $hidden_sql = '';


        if (!bp_is_my_profile() && !$show_hidden && !bp_current_user_can('bp_moderate'))
            $hidden_sql = "AND wb.public = 1";

        if ($per_page && $page) {
            $pag_sql = $wpdb->prepare(" LIMIT %d, %d", intval(( $page - 1 ) * $per_page), intval($per_page));
        }

        $paged_blogs = $wpdb->get_results("SELECT DISTINCT bm.blog_id FROM {$bp->blogs->table_name_blogmeta} bm LEFT JOIN {$wpdb->base_prefix}blogs wb ON bm.blog_id = wb.blog_id WHERE ( ( bm.meta_key = 'name' OR bm.meta_key = 'description' ) AND bm.meta_value LIKE '%%$filter%%' ) {$hidden_sql} AND wb.mature = 0 AND wb.spam = 0 AND wb.archived = '0' AND wb.deleted = 0 ORDER BY meta_value ASC{$pag_sql}");
        $total_blogs = $wpdb->get_var("SELECT COUNT(DISTINCT bm.blog_id) FROM {$bp->blogs->table_name_blogmeta} bm LEFT JOIN {$wpdb->base_prefix}blogs wb ON bm.blog_id = wb.blog_id WHERE ( ( bm.meta_key = 'name' OR bm.meta_key = 'description' ) AND bm.meta_value LIKE '%%$filter%%' ) {$hidden_sql} AND wb.mature = 0 AND wb.spam = 0 AND wb.archived = '0' AND wb.deleted = 0 ORDER BY meta_value ASC");

        return array('blogs' => $paged_blogs, 'total' => $total_blogs);
    }

    /**
     * Retrieve a list of all blogs.
     *
     * Query will include hidden blogs if the logged-in user has the
     * 'bp_moderate' cap.
     *
     * @param int $limit Optional. The maximum number of items to return.
     *        Default: null (no limit).
     * @param int $page Optional. The page of results to return. Default:
     *        null (no limit).
     * @return array Multidimensional results array, structured as follows:
     *           'blogs' - Array of located blog objects
     *           'total' - A count of the total blogs.
     * @version 2 stergatu
     */
    public static function get_all($per_page = null, $page = null, $show_hidden = false) {
        global $bp, $wpdb;
        $hidden_sql = '';
        if (!bp_is_my_profile() && !$show_hidden && !bp_current_user_can('bp_moderate'))
            $hidden_sql = "AND wb.public = 1";


        $pag_sql = ( $per_page && $page ) ? $wpdb->prepare(" LIMIT %d, %d", intval(( $page - 1 ) * $per_page), intval($per_page)) : '';

        $paged_blogs = $wpdb->get_results("SELECT DISTINCT b.blog_id FROM {$bp->blogs->table_name} b LEFT JOIN {$wpdb->base_prefix}blogs wb ON b.blog_id = wb.blog_id WHERE wb.mature = 0 AND wb.spam = 0 AND wb.archived = '0' AND wb.deleted = 0 {$hidden_sql} {$pag_sql}");
        $total_blogs = $wpdb->get_var("SELECT COUNT(DISTINCT b.blog_id) FROM {$bp->blogs->table_name} b LEFT JOIN {$wpdb->base_prefix}blogs wb ON b.blog_id = wb.blog_id WHERE wb.mature = 0 AND wb.spam = 0 AND wb.archived = '0' AND wb.deleted = 0 {$hidden_sql}");

        return array('blogs' => $paged_blogs, 'total' => $total_blogs);
    }

    /**
     * Retrieve a list of blogs whose names start with a given letter.
     *
     * Query will include hidden blogs if the logged-in user has the
     * 'bp_moderate' cap.
     *
     * @param string $letter. The letter you're looking for.
     * @param int $per_page Optional. The maximum number of items to return.
     *        Default: null (no limit).
     * @param int $page Optional. The page of results to return. Default:
     *        null (no limit).
     * @return array Multidimensional results array, structured as follows:
     *           'blogs' - Array of located blog objects.
     *           'total' - A count of the total blogs matching the query.
     * @version 2, stergatu changed show_hidden and $limit to $per_page
     */
    public static function get_by_letter($letter, $per_page = null, $page = null, $show_hidden = false) {
        global $bp, $wpdb;

        $letter = esc_sql(like_escape($letter));

        $hidden_sql = '';

        if (!bp_is_my_profile() && !$show_hidden && !bp_current_user_can('bp_moderate'))
            $hidden_sql = "AND wb.public = 1";




        if ($per_page && $page)
            $pag_sql = $wpdb->prepare(" LIMIT %d, %d", intval(( $page - 1 ) * $per_page), intval($per_page));

        $paged_blogs = $wpdb->get_results("SELECT DISTINCT bm.blog_id FROM {$bp->blogs->table_name_blogmeta} bm LEFT JOIN {$wpdb->base_prefix}blogs wb ON bm.blog_id = wb.blog_id WHERE bm.meta_key = 'name' AND bm.meta_value LIKE '$letter%%' {$hidden_sql} AND wb.mature = 0 AND wb.spam = 0 AND wb.archived = '0' AND wb.deleted = 0 ORDER BY bm.meta_value ASC{$pag_sql}");
        $total_blogs = $wpdb->get_var("SELECT COUNT(DISTINCT bm.blog_id) FROM {$bp->blogs->table_name_blogmeta} bm LEFT JOIN {$wpdb->base_prefix}blogs wb ON bm.blog_id = wb.blog_id WHERE bm.meta_key = 'name' AND bm.meta_value LIKE '$letter%%' {$hidden_sql} AND wb.mature = 0 AND wb.spam = 0 AND wb.archived = '0' AND wb.deleted = 0 ORDER BY bm.meta_value ASC");

        return array('blogs' => $paged_blogs, 'total' => $total_blogs);
    }

    /**
     * Fetch blog data not caught in the main query and append it to results array.
     *
     * Gets the following information, which is either unavailable at the
     * time of the original query, or is more efficient to look up in one
     * fell swoop:
     *   - The latest post for each blog, include Featured Image data
     *   - The blog description
     *
     * @param array $paged_blogs Array of results from the original query.
     * @param array $blog_ids Array of IDs returned from the original query.
     * @param string|bool $type Not currently used. Default: false.
     * @return array $paged_blogs The located blogs array, with the extras added.
     */
    public static function get_blog_extras(&$paged_blogs, &$blog_ids, $type = false) {
        global $bp, $wpdb;

        if (empty($blog_ids))
            return $paged_blogs;

        $blog_ids = implode(',', wp_parse_id_list($blog_ids));

        for ($i = 0, $count = count($paged_blogs); $i < $count; ++$i) {
            $blog_prefix = $wpdb->get_blog_prefix($paged_blogs[$i]->blog_id);
            $paged_blogs[$i]->latest_post = $wpdb->get_row("SELECT ID, post_content, post_title, post_excerpt, guid FROM {$blog_prefix}posts WHERE post_status = 'publish' AND post_type = 'post' AND id != 1 ORDER BY id DESC LIMIT 1");
            $images = array();

            // Add URLs to any Featured Image this post might have
            if (!empty($paged_blogs[$i]->latest_post) && has_post_thumbnail($paged_blogs[$i]->latest_post->ID)) {

                // Grab 4 sizes of the image. Thumbnail.
                $image = wp_get_attachment_image_src(get_post_thumbnail_id($paged_blogs[$i]->latest_post->ID), 'thumbnail', false);
                if (!empty($image))
                    $images['thumbnail'] = $image[0];

                // Medium
                $image = wp_get_attachment_image_src(get_post_thumbnail_id($paged_blogs[$i]->latest_post->ID), 'medium', false);
                if (!empty($image))
                    $images['medium'] = $image[0];

                // Large
                $image = wp_get_attachment_image_src(get_post_thumbnail_id($paged_blogs[$i]->latest_post->ID), 'large', false);
                if (!empty($image))
                    $images['large'] = $image[0];

                // Post thumbnail
                $image = wp_get_attachment_image_src(get_post_thumbnail_id($paged_blogs[$i]->latest_post->ID), 'post-thumbnail', false);
                if (!empty($image))
                    $images['post-thumbnail'] = $image[0];

                // Add the images to the latest_post object
                $paged_blogs[$i]->latest_post->images = $images;
            }
        }

        /* Fetch the blog description for each blog (as it may be empty we can't fetch it in the main query). */
        $blog_descs = $wpdb->get_results("SELECT blog_id, meta_value as description FROM {$bp->blogs->table_name_blogmeta} WHERE meta_key = 'description' AND blog_id IN ( {$blog_ids} )");

        for ($i = 0, $count = count($paged_blogs); $i < $count; ++$i) {
            foreach ((array) $blog_descs as $desc) {
                if ($desc->blog_id == $paged_blogs[$i]->blog_id)
                    $paged_blogs[$i]->description = $desc->description;
            }
        }

        return $paged_blogs;
    }

    /**
     * Check whether a given blog is hidden.
     *
     * Checks the 'public' column in the wp_blogs table.
     *
     * @param int $blog_id The ID of the blog being checked.
     * @return bool True if hidden (public = 0), false otherwise.
     */
    public static function is_hidden($blog_id) {
        global $wpdb;

        if (!(int) $wpdb->get_var($wpdb->prepare("SELECT DISTINCT public FROM {$wpdb->base_prefix}blogs WHERE blog_id = %d", $blog_id)))
            return true;

        return false;
    }

}