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Multi-dem array sort
Posted on 2006-07-20
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
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
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7 Comments
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
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
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
)
)
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
)
)
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..
and 1. comes before 1.txt
no idea why, something do with how ksort works..
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'
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'
can you suggest an atlerntaive to sort by key as all strings. i would like it to display the normal human way of alphabatizing
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