sort multi-dimensional array

[Balaskas Evaggelos]

Hi,

does anyone know how i can sort a multi-dimensional array
by a specific field ?

for example i want to sort arr[m][n] where n=2,
but i need the data of every array to follow that order.

example array:
arr[0][0]
arr[0][1]
arr[0][2]
arr[0][3]
arr[0][4]
arr[0][5]

arr[1][0]
arr[1][1]
arr[1][2]
arr[1][3]
arr[1][4]
arr[1][5]

[gbbulldog@googlemail.com]

Re: sort multi-dimensional array

Balaskas Evaggelos wrote:

Hi,
>
does anyone know how i can sort a multi-dimensional array
by a specific field ?
>
for example i want to sort arr[m][n] where n=2,
but i need the data of every array to follow that order.
>
example array:
arr[0][0]
arr[0][1]
arr[0][2]
arr[0][3]
arr[0][4]
arr[0][5]
>
arr[1][0]
arr[1][1]
arr[1][2]
arr[1][3]
arr[1][4]
arr[1][5]

You can use the array_multisort () function to do this. More info and a
number of examples of useage can be found at :

http://uk.php.net/manual/en/function.array-multisort.php

[Balaskas Evaggelos]

Re: sort multi-dimensional array

gbbulldog@googl email.com wrote:

Balaskas Evaggelos wrote:

>Hi,
>>
>does anyone know how i can sort a multi-dimensional array
>by a specific field ?
>>
>for example i want to sort arr[m][n] where n=2,
>but i need the data of every array to follow that order.
>>
>example array:
>arr[0][0]
>arr[0][1]
>arr[0][2]
>arr[0][3]
>arr[0][4]
>arr[0][5]
>>
>arr[1][0]
>arr[1][1]
>arr[1][2]
>arr[1][3]
>arr[1][4]
>arr[1][5]

>
You can use the array_multisort () function to do this. More info and a
number of examples of useage can be found at :

http://uk.php.net/manual/en/function.array-multisort.php

>

thanks for your anwser but the first thing i checked,
before i wrote this post, was that url.

The example are for multi-dimensional array of one-dimensional arrays.

I can't find how i can sort a multi-dimensional array of array[m][n]
and for a specific field example n=2.

[mootmail-googlegroups@yahoo.com]

Re: sort multi-dimensional array

Balaskas Evaggelos wrote:

thanks for your anwser but the first thing i checked,
before i wrote this post, was that url.
>
The example are for multi-dimensional array of one-dimensional arrays.
>
I can't find how i can sort a multi-dimensional array of array[m][n]
and for a specific field example n=2.

Maybe I just am not understanding you correctly, but aren't they the
same thing?
In PHP:
$ar['m']['n'] = 1;
is equivalent to:
$ar = array('m' =array('n' =1));

Both can be referenced as $ar['m']['n'].

Off the top of my head, the most relevant example from that php manual
page would be Example 3. Sorting database results. It sounds like you
want to essentially sort a 'table' of data by one of the columns. The
concepts of that example should point you in the right direction.
Unless, as I said, I am completely misunderstandin g your question.

[Balaskas Evaggelos]

Re: sort multi-dimensional array

mootmail-googlegroups@ya hoo.com wrote:

Balaskas Evaggelos wrote:

>thanks for your anwser but the first thing i checked,
>before i wrote this post, was that url.
>>
>The example are for multi-dimensional array of one-dimensional arrays.
>>
>I can't find how i can sort a multi-dimensional array of array[m][n]
>and for a specific field example n=2.

>
Maybe I just am not understanding you correctly, but aren't they the
same thing?
In PHP:
$ar['m']['n'] = 1;
is equivalent to:
$ar = array('m' =array('n' =1));
>
Both can be referenced as $ar['m']['n'].
>
Off the top of my head, the most relevant example from that php manual
page would be Example 3. Sorting database results. It sounds like you
want to essentially sort a 'table' of data by one of the columns. The
concepts of that example should point you in the right direction.
Unless, as I said, I am completely misunderstandin g your question.
>

maybe i don't write it correctly - bad english :)

in the example 3 the multi-dimensional array breaks into two
one-dimensional arrays to sort them. So the results is
sorted for every separated array.

i need the 2 arrays to be sorted only by the second field of the second
array. And all the rest to be sorted according by this field.

this is my array:

arr[0][0]
arr[0][1]
arr[0][2]
arr[0][3]
arr[0][4]
arr[0][5]

arr[1][0]
arr[1][1]
arr[1][2]
arr[1][3]
arr[1][4]
arr[1][5]

....
....

i want to sort the arr be second element into the arr:

arr[m][2], and everything else will follow this order.

---
as m: 0,1,2,3,4,5,6,7 ,8,9,...
as n: 0,1,2,3,4,5,6,7 ,8,9,...