simple array question

**Senator Jay Billington Bulworth** · Jul 17 '05, 04:12 AM

Re: simple array question

In article <1e6ea9f6.04031 41917.4e46c6fe@ posting.google. com>,
chad@windmeadow .com (chad phillips) wrote:
[color=blue]
> Hi,
>
> (Newbie to php). I am trying to read in a list of ids. Here is my
> url
>
> http://localhost/a.php?id=1&id=2&id=3[/color]

What you want is:

http://localhost/a.php?id[]=1&id[]=2&id[]=3

Your code should work simply by changing the URL. It's not pretty, but
AFAIK it's the only way to pass an array through the query-string.

hth

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--------------------------|--------------------------------------------------
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**Jedi121** · Jul 17 '05, 04:12 AM

Re: simple array question

Senator Jay Billington Bulworth a écrit le 15/03/2004 :[color=blue]
> What you want is:
>
> http://localhost/a.php?id[]=1&id[]=2&id[]=3
>
> Your code should work simply by changing the URL. It's not pretty, but
> AFAIK it's the only way to pass an array through the query-string.
>
> hth[/color]

I suggest using serialize() and unserialize() to pass arrays in URL.
Beware of the protection of slashes, you may need to use stripslashes()
as well.

**Kevin Thorpe** · Jul 17 '05, 04:12 AM

Re: simple array question

chad phillips wrote:[color=blue]
> Hi,
>
> (Newbie to php). I am trying to read in a list of ids. Here is my
> url
>
> http://localhost/a.php?id=1&id=2&id=3
>
> Then I just want to print out the ids, but I can't seem to get it
> work.[/color]

Why don't you pack up the ids in a delimited array if they're simple
numbers:

http://localhost/a.php?id=1,2,3

Then:
$ids = explode(',',$_G ET['id']);

foreach ($ids as $id) {
...
}

**chad phillips** · Jul 17 '05, 04:13 AM

Re: simple array question

That would work. In perl I can read in
http://localhost/a.php?id=1&id=2&id=3. I figured there must be a way
to do the same thing in php. As someone pointed out I can change them
to http://localhost/a.php?id[]=1&id[]=2&id[]=3, but it seems weird
that php could handle id=1&id=2&id=3

thanks
chad

Kevin Thorpe <kevin@pricetra k.com> wrote in message news:<40558f73$ 0$3767$afc38c87 @news.easynet.c o.uk>...[color=blue]
> chad phillips wrote:[color=green]
> > Hi,
> >
> > (Newbie to php). I am trying to read in a list of ids. Here is my
> > url
> >
> > http://localhost/a.php?id=1&id=2&id=3
> >
> > Then I just want to print out the ids, but I can't seem to get it
> > work.[/color]
>
> Why don't you pack up the ids in a delimited array if they're simple
> numbers:
>
> http://localhost/a.php?id=1,2,3
>
> Then:
> $ids = explode(',',$_G ET['id']);
>
> foreach ($ids as $id) {
> ...
> }[/color]

**Andy Hassall** · Jul 17 '05, 04:13 AM

Re: simple array question

On Mon, 15 Mar 2004 03:28:16 GMT, Senator Jay Billington Bulworth
<funha@fung.arg > wrote:
[color=blue]
>In article <1e6ea9f6.04031 41917.4e46c6fe@ posting.google. com>,
> chad@windmeadow .com (chad phillips) wrote:
>[color=green]
>> (Newbie to php). I am trying to read in a list of ids. Here is my
>> url
>>
>> http://localhost/a.php?id=1&id=2&id=3[/color]
>
>What you want is:
>
>http://localhost/a.php?id[]=1&id[]=2&id[]=3
>
>Your code should work simply by changing the URL. It's not pretty, but
>AFAIK it's the only way to pass an array through the query-string.[/color]

IMHO this is the one thing that ASP does right over PHP (I suppose it has to
do _something_ right). Send multiple values and you get an array; you don't
need to put [] in the name, causing arguments about whether it's valid HTML (it
is).

If you have multiple elements with the same name at the moment, I'm not
entirely sure it's deterministic which value you'll end up with in PHP, and
non-determinism is generally annoying in a programming language. If it's
deterministic, I don't think it's documented, which is nearly as bad.

I think PHP ought to at least have a config option to accept multiple values
not ending in [] as arrays - although I suppose since PHP is open-source I
ought to just get on with it and write a patch if it bothers me ;-)

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

**Chung Leong** · Jul 17 '05, 04:13 AM

Re: simple array question

Uzytkownik "Andy Hassall" <andy@andyh.co. uk> napisal w wiadomosci
news:do7c50991e a50kb7edp60f5p5 52eo9lk6g@4ax.c om...[color=blue]
> IMHO this is the one thing that ASP does right over PHP (I suppose it has[/color]
to[color=blue]
> do _something_ right). Send multiple values and you get an array; you[/color]
don't[color=blue]
> need to put [] in the name, causing arguments about whether it's valid[/color]
HTML (it[color=blue]
> is).[/color]

That would cause massive number of type-mismatch errors, since PHP doesn't
automatically convert a scalar to an array with one item based on the
context.
[color=blue]
> If you have multiple elements with the same name at the moment, I'm not
> entirely sure it's deterministic which value you'll end up with in PHP,[/color]
and[color=blue]
> non-determinism is generally annoying in a programming language. If it's
> deterministic, I don't think it's documented, which is nearly as bad.[/color]

There's documentation, kind of. The comment for variables_order in php.ini
reads "[r]egistration is done from left to right, newer values override
older values." In the OP, $_GET['id'] would yield 3.

**Andy Hassall** · Jul 17 '05, 04:13 AM

Re: simple array question

On Mon, 15 Mar 2004 19:16:34 -0500, "Chung Leong" <chernyshevsky@ hotmail.com>
wrote:
[color=blue]
>Uzytkownik "Andy Hassall" <andy@andyh.co. uk> napisal w wiadomosci
>news:do7c50991 ea50kb7edp60f5p 552eo9lk6g@4ax. com...[color=green]
>> IMHO this is the one thing that ASP does right over PHP (I suppose it has[/color]
>to[color=green]
>> do _something_ right). Send multiple values and you get an array; you[/color]
>don't[color=green]
>> need to put [] in the name, causing arguments about whether it's valid[/color]
>HTML (it[color=green]
>> is).[/color]
>
>That would cause massive number of type-mismatch errors, since PHP doesn't
>automaticall y convert a scalar to an array with one item based on the
>context.[/color]

Well, yes, there is that. Fair point.

But people have nearly got over register_global s, we need a new configuration
option to break things again ("Why do all my database rows have 'Array' in
them?!") ;-)

(Slightly related: I'm not that keen on arrays stringifying to Array either -
ought to raise a warning, I don't see how 'Array' is useful).
[color=blue][color=green]
>> If you have multiple elements with the same name at the moment, I'm not
>> entirely sure it's deterministic which value you'll end up with in PHP,[/color]
>and[color=green]
>> non-determinism is generally annoying in a programming language. If it's
>> deterministic, I don't think it's documented, which is nearly as bad.[/color]
>
>There's documentation, kind of. The comment for variables_order in php.ini
>reads "[r]egistration is done from left to right, newer values override
>older values." In the OP, $_GET['id'] would yield 3.[/color]

Variables_order is for the order that globals and $_REQUEST source their
information from; if it's GP then reading from left to right, GET variables are
overwritten by POST variables. But it doesn't say what happens for the multiple
GET variables of the same name.

3 seems the logical choice but I can't find the documentation that actually
says that.

The HTML spec at least guarantees the order they're sent out - same 'order
they appear in the document stream' (HTML4.01 sec 17.3.4).

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

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