foreach and multidimensional arrays

[ubccis@gmail.com]

Hi.

Does for each for on multidimensiona l arrays? For example, if one
element of $in is $course_list and I want to echo all everything in
course_list

[Andy Hassall]

Re: foreach and multidimensiona l arrays

On 27 Jan 2005 15:16:31 -0800, ubccis@gmail.co m wrote:
[color=blue]
>Does for each for on multidimensiona l arrays? For example, if one
>element of $in is $course_list and I want to echo all everything in
>course_list[/color]

foreach operates on arrays, and only to one level; if the array contains
arrays, foreach doesn't care - the loop index will just be set to an array that
is that dimension of the array.

You could use is_array() if you want to tell if you've hit another dimension
of the array.

--
Andy Hassall / <andy@andyh.co. uk> / <http://www.andyh.co.uk >
<http://www.andyhsoftwa re.co.uk/space> Space: disk usage analysis tool

[Chris Hope]

Re: foreach and multidimensiona l arrays

ubccis@gmail.co m wrote:
[color=blue]
> Does for each for on multidimensiona l arrays? For example, if one
> element of $in is $course_list and I want to echo all everything in
> course_list[/color]

No. You'd need to test the values in the array to see if they were also
arrays and do something with that eg

foreach($foo as $index => $value) {
if(is_array($va lue)) {
... do something ...
}
}

--
Chris Hope - The Electric Toolbox - http://www.electrictoolbox.com/

[ubccis@gmail.com]

Re: foreach and multidimensiona l arrays

Hi....

I found the answer...of using nested arrays...


foreach ($in as $key) {
if(is_array($ke y)){
foreach ($key as $key2 => $value) {

echo "Key: $key; Value: $value<br />\n";

}
} else {

echo "Key: $key; Value: $value<br />\n";

}

}

[Geoff Berrow]

Re: foreach and multidimensiona l arrays

I noticed that Message-ID:
<1106871825.931 010.232570@c13g 2000cwb.googleg roups.com> from
ubccis@gmail.co m contained the following:
[color=blue]
>I found the answer...of using nested arrays...[/color]
What about n dimensional arrays?

I'm thinking perhaps a recursive function?
--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[skrebbel]

Re: foreach and multidimensiona l arrays

"Geoff Berrow" <blthecat@ckdog .co.uk> wrote in message
news:ovpjv0tj2s 0n71ebkvlj73jvh h2fpk3tpr@4ax.c om...[color=blue]
> I noticed that Message-ID:
> <1106871825.931 010.232570@c13g 2000cwb.googleg roups.com> from
> ubccis@gmail.co m contained the following:
>[color=green]
> >I found the answer...of using nested arrays...[/color]
> What about n dimensional arrays?
>
> I'm thinking perhaps a recursive function?[/color]

yes.

[Geoff Berrow]

Re: foreach and multidimensiona l arrays

I noticed that Message-ID: <ctdqbn$kgl$1@n ews.tue.nl> from skrebbel
contained the following:
[color=blue][color=green]
>> I'm thinking perhaps a recursive function?[/color]
>
>yes.[/color]

But I'd usually use print_r() if I just wanted to take a peek.

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/