On Tue, 3 Sep 2002, Andrey Hristov wrote: AH>>> AH>>> Hi, AH>>> I am not too much in array_unique() but played with array_diff() for a week AH>>> to implement array_diff_assoc() with no success so far but atm I am dreaming AH>>> the code of array_diff. I AH>>> saw that most of the code of array_diff() is in array_intersect() and AH>>> probably in array_unique() (yup it is like them). AH>>> The argument is sorted with zend_qsort() by value and nothing is known for AH>>> the key order in the AH>>> sorted array.
If (zend_)qsort is the basis for all sorting operations, regarding arrays, isn't it better then to use a stable sorting routine (I don't know if zend_qsort makes qsort stable, so if it does, ignore this). >From my personal experience, I expect array_unique, to display more or less the same functionality as the SQL GROUP construct, leaving the first element of dupli- cates in tact. On BSD you have mergesort() but I don't know how portable that is. -- Melvyn. -- PHP Development Mailing List <http://www.php.net/> To unsubscribe, visit: http://www.php.net/unsub.php
