On Wed, April 11, 2007 8:44 am, Tijnema ! wrote: > On 4/10/07, Richard Lynch <ceo@xxxxxxxxx> wrote: >> http://php.net/array_flip followed up an unset, followed by another >> array_flip, I guess... > > What if you have an array like this: > Array > ( > [0] => Array > ( > [0] => 1 > [1] => 2 > [2] => 2 > [3] => 2 > [4] => 2 > [5] => 4 > ) > [1] => 4 > [2] => 2 > [3] => 4 > ) > > And i want to remove the 4, but i don't know 1 and 3. using array_flip > wouldn't work because of my multi-dimensional array. But what if i'm > using array_search? will it return 1 only? will it return 5? >> >> Why in the world you'd architect the array with a value when you >> need >> to unset by value in the first place is beyond me, though... > > Sometimes you end up with such arrays, where you need to have > non-unique values first, so you store them in the value, and then you > need to remove some of the non-unique values. But it's a > multi-dimensional array... All I can say is that if I have to be able to delete by value, then I etiher build an inverse mapping array, or, if they arrays are going to get bigger then X, I just skip the arrays, and architect it in the database. You can always write an inverse array -- if you have multiple keys for one value, you just have to add another layer of array-ness in your reverse map. Searcing through an array for a value to be deleted is just something I never personally do. 'Course, we didn't *have* array_search back when I formed this opinion, and I'm a fossil/Luddite... YMMV -- Some people have a "gift" link here. Know what I want? I want you to buy a CD from some indie artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
