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Re: multi-dimensional array sorting by index (like a table) [message #176359 is a reply to message #176358]

Wed, 28 December 2011 00:39

Denis McMahon
Messages: 634
Registered: September 2010

Karma:

Senior Member

On Tue, 27 Dec 2011 19:24:05 -0500, Michael Joel wrote:

> On Wed, 28 Dec 2011 01:03:22 +0100, Thomas Mlynarczyk
> <thomas(at)mlynarczyk-webdesign(dot)de> wrote:

>> Michael Joel schrieb:

>>> I am guessing there is no php function to handle sorting an array as
>>> you could a database? Meaning I want a multi-dimensional array sorted
>>> by index 0, and "sub sorting" (whatever you call it) using index 4?

>> Have a look at http://de3.php.net/array_multisort.

> Yes I saw that but I couldn't seem to get it to work. It says it will
> sort a multi-dimensional array by an index. I tried and it just kept
> spitting errors at me. I test the arrays to make sure they contained
> data I expected.

The way I read it (example 3), assuming your 2d array is $data containing
1d arrays of 5 or more elements:

$k1 = $k2 = array();
foreach ($data as $key => $row) {
$k1[$key] = $row[0];
$k2[$key] = $row[4];
}
array_multisort($k1, SORT_DESC, $k2, SORT_DESC, $data);

but I haven't tried this.

Mind you, I haven't tried the other solution that I posted earlier
either, although I have used similar code in practice.

Rgds

Denis McMahon

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[Message index]

		multi-dimensional array sorting by index (like a table) By: Michael Joel on Tue, 27 December 2011 20:25
		Re: multi-dimensional array sorting by index (like a table) By: The Natural Philosoph on Tue, 27 December 2011 21:07
		Re: multi-dimensional array sorting by index (like a table) By: Denis McMahon on Tue, 27 December 2011 23:16
		Re: multi-dimensional array sorting by index (like a table) By: Thomas Mlynarczyk on Wed, 28 December 2011 00:03
		Re: multi-dimensional array sorting by index (like a table) By: Michael Joel on Wed, 28 December 2011 00:24
		Re: multi-dimensional array sorting by index (like a table) By: Denis McMahon on Wed, 28 December 2011 00:39
		Re: multi-dimensional array sorting by index (like a table) By: Michael Joel on Wed, 28 December 2011 01:12
		Re: multi-dimensional array sorting by index (like a table) By: Michael Joel on Wed, 28 December 2011 03:50

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