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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
703 | * Filters the list of sites a user belongs to. |
704 | * |
705 | * @since MU (3.0.0) |
706 | * |
707 | * @param array $sites An array of site objects belonging to the user. |
708 | * @param int $user_id User ID. |
709 | * @param bool $all Whether the returned sites array should contain all sites, including |
710 | * those marked 'deleted', 'archived', or 'spam'. Default false. |
711 | */ |
712 | return apply_filters( 'get_blogs_of_user', $sites, $user_id, $all ); |
713 | } |
714 |
|
715 | /** |
716 | * Find out whether a user is a member of a given blog. |
717 | * |
718 | * @since MU (3.0.0) |
719 | * |
720 | * @global wpdb $wpdb WordPress database abstraction object. |
721 | * |