Что такое капча при регистрации 5

a:64:{s:9:"post_type";a:4:{i:0;s:4:"post";i:1;s:17:"sposobi-zarabotka";i:2;s:10:"biznesidei";i:3;s:11:"biznes_plan";}s:14:"posts_per_page";i:4;s:8:"meta_key";s:15:"item_intresting";s:10:"meta_value";i:1;s:5:"error";s:0:"";s:1:"m";s:0:"";s:1:"p";i:0;s:11:"post_parent";s:0:"";s:7:"subpost";s:0:"";s:10:"subpost_id";s:0:"";s:10:"attachment";s:0:"";s:13:"attachment_id";i:0;s:4:"name";s:0:"";s:8:"pagename";s:0:"";s:7:"page_id";i:0;s:6:"second";s:0:"";s:6:"minute";s:0:"";s:4:"hour";s:0:"";s:3:"day";i:0;s:8:"monthnum";i:0;s:4:"year";i:0;s:1:"w";i:0;s:13:"category_name";s:0:"";s:3:"tag";s:0:"";s:3:"cat";s:0:"";s:6:"tag_id";s:0:"";s:6:"author";s:0:"";s:11:"author_name";s:0:"";s:4:"feed";s:0:"";s:2:"tb";s:0:"";s:5:"paged";i:0;s:7:"preview";s:0:"";s:1:"s";s:0:"";s:8:"sentence";s:0:"";s:5:"title";s:0:"";s:6:"fields";s:0:"";s:10:"menu_order";s:0:"";s:5:"embed";s:0:"";s:12:"category__in";a:0:{}s:16:"category__not_in";a:0:{}s:13:"category__and";a:0:{}s:8:"post__in";a:0:{}s:12:"post__not_in";a:0:{}s:13:"post_name__in";a:0:{}s:7:"tag__in";a:0:{}s:11:"tag__not_in";a:0:{}s:8:"tag__and";a:0:{}s:12:"tag_slug__in";a:0:{}s:13:"tag_slug__and";a:0:{}s:15:"post_parent__in";a:0:{}s:19:"post_parent__not_in";a:0:{}s:10:"author__in";a:0:{}s:14:"author__not_in";a:0:{}s:19:"ignore_sticky_posts";b:0;s:16:"suppress_filters";b:0;s:13:"cache_results";b:1;s:22:"update_post_term_cache";b:1;s:22:"update_menu_item_cache";b:0;s:19:"lazy_load_term_meta";b:1;s:22:"update_post_meta_cache";b:1;s:8:"nopaging";b:0;s:17:"comments_per_page";s:2:"50";s:13:"no_found_rows";b:0;s:5:"order";s:4:"DESC";}