note 43114 added to function.array-unique

The following is an efficient, adaptable implementation of array_unique which always retains the first key having a given value: function array_unique2(&$aray) { $aHash = array(); foreach ($aray as $key => &$val) if (@$aHash[$val]++) unset ($aray[$key]); } It is also adaptable to multi dimensional arrays. For example, if your array is a sequence of (multidimensional) points, then in place of @$aHash[$val]++ you could use @$aHash[implode("X",$val)]++ If you want to not have holes in your array, you can do an array_merge($aray) at the end. Csaba Gabor ---- Manual Page -- http://www.php.net/manual/en/function.array-unique.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+43114 Delete -- http://master.php.net/manage/user-notes.php?action=delete+43114&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+43114&report=yes Search -- http://master.php.net/manage/user-notes.php