I have used the function usort() to sort multi-dimensional arrays before.
It might be a challenge to write the comparison function, but it is
possible. I use 3-dim arrays all of the time. Makes for a bit cleaner code
IMHO.
I suppose one thing to consider, is that if you have an enormous 3-dim
array, you are probably doing something wrong. Generating a really big
array can be resource intense, and can slow you page down exponentially.
Select only parts of the recordset, or smaller chuck of the file for better
execution, but if your application requires a large 3-dim array, it works
just fine for me.
Robert Zwink
-----Original Message-----
From: Tim Ward [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 18, 2001 8:06 AM
To: '[EMAIL PROTECTED]'
Subject: RE: [PHP] Is there such an array like $array[][]?
1. there are no multi-dimensional arrays in php, just single dimension
arrays each element of which may be an array (or any other variable type).
If you make every element of an array an array of size x, you will get what
can be used as a multi-dimensional array. But if you forget what it really
is, you'll run into problems like expecting to be able to sort
$array[$x][$y] by $y.
2. because of this you can have as many levels of an array as you want.
try :
$array[][][][] = "fred";
foreach($array as $level1)
foreach($level1 as $level2)
foreach($level2 as $level3)
foreach($level3 as $value)
echo($value);
Tim Ward
Senior Systems Engineer
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> -----Original Message-----
> From: Plutarck [mailto:[EMAIL PROTECTED]]
> Sent: 17 April 2001 17:42
> To: [EMAIL PROTECTED]
> Subject: Re: [PHP] Is there such an array like $array[][]?
>
>
> PHP can be a tad screwy with how it handles multi-dimensional
> arrays, but
> yes PHP handles them. No real speed problems with them either.
>
> But you may just want to use an associative array like:
>
> $loc = array("y" => $y, "x" => $x);
>
> Then just use $loc["y"] and $loc["x"].
>
> Just another option, but feel free to use multi-dimensional
> arrays. Just be
> aware that PHP supports only two dimensions (so $array[][][]
> will not work),
> and if you try and get fancy with sort() and count() you are
> going to give
> yourself a migraine.
>
>
> --
> Plutarck
> Should be working on something...
> ...but forgot what it was.
>
>
> "Jack Dempsey" <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > yes, that's a multi-dimensional array, which is fine in php (and
> > everything else i can think of =P)...
> >
> > -jack
> >
> > Scott Fletcher wrote:
> > >
> > > Hi! I am wondering if there is such a php array that can
> take care of
> the x
> > > and y axis data. I figure that using this array type,
> $axis[$x][$y]
> would
> > > do the trick. Would it work? If not, then education me
> on what would
> work!
> > > Thanks!
> > >
> > > Scott
> > >
> > > --
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>
>
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