Solved

Multi-dem array sort

Posted on 2006-07-20
7
271 Views
Last Modified: 2008-03-17
Multi-demension arrays always get me... I need help sorting this array two ways.

Array
(
    [1] => Array
        (
            [timestamp] => 1153408578
        )
    [2] => Array
        (
            [timestamp] => 1153408589
        )
    [3] => Array
        (
            [timestamp] => 1153408592
        )
    [2.txt] => Array
        (
            [timestamp] => 1153408593
        )
    [3.txt] => Array
        (
            [timestamp] => 1153408593
        )
)

#1 : I would like to sort the array by the key, maintaining the inside array. I tried ksort, but it did not appear to work.

#2 : I would like to sort the array the array but the timestamp, maintaining the associations.

Thanks
0
Comment
Question by:qwertq
  • 3
  • 2
  • 2
7 Comments
 
LVL 33

Accepted Solution

by:
snoyes_jw earned 250 total points
ID: 17148618
Can you show what you tried for #1, what it produced, and what you wanted instead?

For #2, we'll extract the timestamps in order, and then pass that as the first parameter to array_multisort, and your multi-d array as the second..
$reference = array();
foreach ($yourArray as $row)
  $reference[] = $row['timestamp'];
array_multisort($reference, $yourArray);
0
 

Author Comment

by:qwertq
ID: 17149553
this array has been ksort($array) 'ed

notice how it is out of order (the keys). the 1 is at the bottom and the 1.txt is at the top... ?

Array
(
    [1.txt] => Array
        (
            [timestamp] => 1153408592
        )

    [2.txt] => Array
        (
            [timestamp] => 1153408593
        )

    [3.txt] => Array
        (
            [timestamp] => 1153408593
        )

    [a] => Array
        (
            [timestamp] => 1153408596
        )

    [a.jpg] => Array
        (
            [timestamp] => 1153414940
        )

    [b] => Array
        (
            [timestamp] => 1153408599
        )

    [b.jpg] => Array
        (
            [timestamp] => 1153417257
        )

    [c] => Array
        (
            [timestamp] => 1153408604
        )

    [c.jpg] => Array
        (
            [timestamp] => 1153417279
        )

    [1] => Array
        (
            [timestamp] => 1153408578
        )

    [2] => Array
        (
            [timestamp] => 1153408589
        )

    [3] => Array
        (
            [timestamp] => 1153408592
        )

)
0
 
LVL 7

Expert Comment

by:maUru
ID: 17149663
that is normal ksort behaviour, 1.txt comes before 1

and 1. comes before 1.txt

no idea why, something do with how ksort works..
0
Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

 

Author Comment

by:qwertq
ID: 17149780
why is 1 coming after a then?
0
 
LVL 7

Expert Comment

by:maUru
ID: 17149825
why are we here?
is there a god?
why dont you ask the guy who wrote ksort.

it seems a string 'a' will come before a string '1'

but an integer 1 will come before a string 'a'

0
 

Author Comment

by:qwertq
ID: 17149932
can you suggest an atlerntaive to sort by key as all strings. i would like it to display the normal human way of alphabatizing
0
 
LVL 33

Assisted Solution

by:snoyes_jw
snoyes_jw earned 250 total points
ID: 17153853
Try passing the constant SORT_STRING as a second parameter to ksort.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I imagine that there are some, like me, who require a way of getting currency exchange rates for implementation in web project from time to time, so I thought I would share a solution that I have developed for this purpose. It turns out that Yaho…
Developers of all skill levels should learn to use current best practices when developing websites. However many developers, new and old, fall into the trap of using deprecated features because this is what so many tutorials and books tell them to u…
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

813 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now