Define a custom search type.
This hook allows a module to tell search.module that it wishes to perform searches on content it defines (custom node types, users, or comments for example) when a site search is performed.
In order for the search to do anything, your module must also implement hook_search_execute(), which is called when someone requests a search on your module's type of content. If you want to have your content indexed in the standard search index, your module should also implement hook_update_index(). If your search type has settings, you can implement hook_search_admin() to add them to the search settings page. You can use hook_form_FORM_ID_alter(), with FORM_ID set to 'search_form', to add fields to the search form (see node_form_search_form_alter() for an example). You can use hook_search_access() to limit access to searching, and hook_search_page() to override how search results are displayed.
Array with optional keys:
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_search_info() {
// Make the title translatable.
t('Content');
return array(
'title' => 'Content',
'path' => 'node',
'conditions_callback' => 'callback_search_conditions',
);
}