array $all_roles )
Filters the list of editable roles.
Array of arrays containing role information.
editable_roles is a filter applied by the function get_editable_roles() to the list of roles that one user can assign to others (a user must have the edit_users capability to change another user’s role). This list is displayed in the bulk operations (if the user has the list_users and promote_users) of the Users Screen, and on the profile screen.
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$editable_roles = apply_filters( 'editable_roles', $all_roles );