Hi,
I have a handle on this and hope this might help some of you too in
Sorting Multidimensional Arrays. First we need an array.
$user_ar = array(
0 => array( 'id'=>1, 'name'=>joe)
1 => array( 'id'=>2, 'name'=>mike)
2 => array( 'id'=>3, 'name'=>paul)
);
A typical reference is $user_ar[1]['id'] or $user_ar[1]['name']. To
sort by name we need to use the usort() unfunction of PHP:
usort($user_ar, "compare");
where compare is a function:
function compare($x, $y) {
if ( $x['name'] == $y['name'] ){
return 0;
} else if ( $x['name'] < $y['name'] ) {
return -1;
} else {
return 1;
}
}
To sort the same array by different named positions like 'id' replace
'name' with 'id' in the function or create a new function for sorting
by that value. Also to sort DESC change the '<' to '>' in the
function. After calling usort() you can call a foreach() to iterate
the content of $user_ar.
I think that should do it.
Sincerely,
Mike
--
Mike Brandonisio * Web Hosting
Tech One Illustration * Internet Marketing
tel (630) 759-9283 * e-Commerce
[EMAIL PROTECTED] * http://www.jikometrix.net
JIKOmetrix - Reliable web hosting
On Jun 20, 2006, at 7:38 AM, Mike Brandonisio wrote:
> Hi,
>
> I'm having trouble working with Multidimensional Arrays. Does anyone
> have any tutorials or links they might share on the topic. The
> challenges I'm having are sorting by a value in the 2nd array and
> searching for a value in the second array.
>
> Array
> (
> [0] => Array
> (
> [id] => 6
> [answer] => A
> [remote_address] => 24.15.143.7
> [date_time] => 2006-06-20 07:35:24
> [survey_id] => 1
> )
>
> [1] => Array
> (
> [id] => 4
> [answer] => B
> [remote_address] => 24.15.143.7
> [date_time] => 2006-06-20 07:35:24
> [survey_id] => 1
> )
> )
>
> I'm just not getting how the php example works with usort() or
> array_filter().
>
> Sincerely,
> Mike
> --
> Mike Brandonisio * IT Planning & Support
> Tech One Illustration * Database Applications
> tel (630) 759-9283 * e-Commerce
> [EMAIL PROTECTED] * www.techoneillustration.com
>
>
>
>
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