Request: array_unique_values()

I was looking through all the new array functions in PHP4 and couldn't find one that would just return the unique values of a given array. So if: $a = array ( 1, 2, 2, 3, 4, 4, 4, 4, 5, 6, 6 ); The function would return: array ( 1, 2, 3, 4, 5, 6 ); This can be done in (at least) two ways in user-land: function array_unique_values($a) { return array_keys(array_count_values($a)); } function array_unique_values($a) { return array_flip(array_flip($a)); } This could be problematic for associative arrays, but there are three solutions: (1) ignore key->value association and just assign 0,1,2, etc. to the returned array (2) keep the key->value association, but uses the key of the last unique entry in the case of duplicates (3) keep the key->value association, but uses the key of the first unique entry in the case of duplicates The two methods above are for the first 2 cases, respectively. I couldn't find an "elegant" way of solving the 3rd. Anyway ... since the code behind these array functions isn't internal PHP code, I don't wanna mess with ext/standard/array.c myself. Anyone else feel like adding array_unique_values() to PHP4? It seems pretty straightforward ... :) __________________________________________________________________ Colin Viebrock easyDNS Technologies Co-Founder control your domain http://www.easyDNS.com