Difference between user complete and omni complete in vim

Question

I'm using neocomplcache in Vim 7.3. When entering some code I'd expect it to suggest completions based on the class of the variable:

$db = new MembersDatabase();
$db-> /* Sugest addMember, printMembers, __construct */

Instead vim just outputs

-- User defined completion (^U^N^P) Pattern not found

However if I hit <C-x><C-o> omni completion pops up and shows me what I expect.

Isn't neocomplcache supposed to be smarter than that? Can I just disable user complete since (in this instance) omni obviously is what I want.

Additional question, on some screenshots for neocomplcache they show method signatures when suggesting completions, how do I enable those?

Link to my vim config Pastibin of .vimrc

Answer 1

let g:neocomplcache_omni_patterns.php = '[^. \t]->\h\w*\|\h\w*::'

is supposed to kick the plugin into omnicompletion mode after a -> or a ::. You should post an issue on GitHub.

Also I don't see method signatures in any of those screenshots but the PHP omnicompletion script already does that in small preview window.