public static function queries_array($index = null)
 {
     $arr = array(function () {
         $users_q = \hlkiller_core::db()->query("SELECT `users_id` FROM `users` ORDER BY RAND() LIMIT 1");
         $users = $users_q->fetch_array(MYSQLI_ASSOC);
         $posts_q = \hlkiller_core::db()->query("SELECT `posts_id` FROM `posts` ORDER BY RAND() LIMIT 1");
         $posts = $posts_q->fetch_array(MYSQLI_ASSOC);
         $likes_q = \hlkiller_core::db()->query("SELECT COUNT(*) FROM `users_posts_like` WHERE `users_id`='{$users['users_id']}' AND `posts_id`='{$posts['posts_id']}'");
         $likes = $likes_q->fetch_array(MYSQLI_NUM);
         if ($likes[0]) {
             $result = \hlkiller_core::db()->query("DELETE FROM `users_posts_like` WHERE `users_id`='{$users['users_id']}' AND `posts_id`='{$posts['posts_id']}'");
         } else {
             $result = \hlkiller_core::db()->query("INSERT INTO `users_posts_like` (`users_id`,`posts_id`,`rel_users_posts_like_time`) VALUES ('{$users['users_id']}','{$posts['posts_id']}',UNIX_TIMESTAMP())");
         }
         return $result;
     }, function () {
         $users_q = \hlkiller_core::db()->query("SELECT `users_id` FROM `users` ORDER BY RAND() LIMIT 1");
         $users = $users_q->fetch_array(MYSQLI_ASSOC);
         $users2_q = \hlkiller_core::db()->query("SELECT `users_id` FROM `users` ORDER BY RAND() LIMIT 1");
         $users2 = $users2_q->fetch_array(MYSQLI_ASSOC);
         $likes_q = \hlkiller_core::db()->query("SELECT `following_id` FROM `rel_users_following` WHERE `users_follower_id`='{$users['users_id']}' AND `users_supplier_id`='{$users2['users_id']}'");
         $likes = $likes_q->fetch_array(MYSQLI_NUM);
         if ($likes[0]) {
             $result = \hlkiller_core::db()->query("DELETE FROM `rel_users_following` WHERE `following_id`='{$likes['0']}'");
         } else {
             $result = \hlkiller_core::db()->query("INSERT INTO `rel_users_following` (`users_follower_id`,`users_supplier_id`,`following_time`) VALUES ('{$users['users_id']}','{$users2['users_id']}',UNIX_TIMESTAMP())");
         }
         return $result;
     }, function () {
         $users_q = \hlkiller_core::db()->query("SELECT `users_id` FROM `users` ORDER BY RAND() LIMIT 1");
         $users = $users_q->fetch_array(MYSQLI_ASSOC);
         $posts_q = \hlkiller_core::db()->query("SELECT `posts_id` FROM `posts` ORDER BY RAND() LIMIT 1");
         $posts = $posts_q->fetch_array(MYSQLI_ASSOC);
         $text = \annex::gen_rnd_text();
         $result = \hlkiller_core::db()->query("INSERT INTO `rel_users_posts_comments` (`users_id`,`posts_id`,`rel_users_posts_comments_time`,`comments_text`) VALUES ('{$users['users_id']}','{$posts['posts_id']}',UNIX_TIMESTAMP(),'{$text}')");
         return $result;
     }, function () {
         $posts_q = \hlkiller_core::db()->query("SELECT `posts_id` FROM `posts` ORDER BY RAND() LIMIT 1");
         $posts = $posts_q->fetch_array(MYSQLI_ASSOC);
         $categories_q = \hlkiller_core::db()->query("SELECT `categories_id` FROM `categories` ORDER BY RAND() LIMIT 1");
         $categories = $categories_q->fetch_array(MYSQLI_ASSOC);
         $pc_q = \hlkiller_core::db()->query("SELECT `posts_categories_id` FROM `rel_posts_categories` WHERE `posts_id`='{$posts['posts_id']}' AND `categories_id`='{$categories['categories_id']}'");
         if ($pc_q->num_rows) {
             $result = \hlkiller_core::db()->query("DELETE FROM `rel_posts_categories` WHERE `posts_id`='{$posts['posts_id']}' AND `categories_id`='{$categories['categories_id']}'");
         } else {
             $result = \hlkiller_core::db()->query("INSERT INTO `rel_posts_categories` (`posts_id`,`categories_id`) VALUES ('{$posts['posts_id']}','{$categories['categories_id']}')");
         }
         return $result;
     }, function () {
         $name = \annex::gen_rnd_str(20);
         $pass = \annex::gen_rnd_str(25);
         $time = time();
         $result = \hlkiller_core::db()->query("INSERT INTO `users` (`users_username`,`users_password`,`users_created_on`) VALUES ('{$name}','{$pass}','{$time}')");
         return $result;
     });
     if (!is_null($index)) {
         return $arr[$index]();
     } else {
         return count($arr);
     }
 }