RE: [PHP] Multi-Sort -- how to do this?

On 17 June 2009 22:12, tedd advised:

> Hi gang:
> 
> Here's the problem. Let's say you have a collection of
> arrays, such as:
> 
> $a = array();
> $b = array();
> $c = array();
> $d = array();
> 
> And then you populate the arrays like so:
> 
> while(...)
>     {
>     $a[] = ...
>     $b[] = ...
>     $c[] = ...
>     $d[] = ...
>     }
> 
> Now, let's say you want to sort the $d array, but you also want the
> arrays $a, $b, and $c to be arranged in the same resultant order as
$d.
> 
> For example, please follow this:
> 
> Before sort of $d:
> $a = [apple, banana, grape, orange]
> $b = [100, 2111, 198, 150]
> $c = [red, yellow, purple, orange]
> $d = [100, 300, 11, 50]
> 
> After sort of $d:
> $a = [grape, orange, apple, banana]
> $b = [198, 150, 100, 2111]
> $c = [purple, orange, red, yellow]
> $d = [11, 50, 100, 300]

array_multisort($d, $a, $b, $c) should do what you want,

Cheers!

Mike

 --
Mike Ford,  Electronic Information Developer,
C507, Leeds Metropolitan University, Civic Quarter Campus, 
Woodhouse Lane, LEEDS,  LS1 3HE,  United Kingdom
Email: [email protected]
Tel: +44 113 812 4730


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