Variable in Array

[dr. zoidberg]

Is it possible to put Variable in Array? Here is what I need:

$array = Array($a,$b);

$a = 'something';
$b = 'something else';

foreach ($array as $val) {
echo "$val";
}

Output should be:

something
something else

Array is:

Array
(
[0] => $a
[1] => $b
)

If this is not possible is there any other way to do this? Thing is that
I need to display some data based on array content.

So far I have used:

if (in_array('5', $array)) {

echo 'data that should be display based on array value. I cant put this
data in array because array is stored in cookie and then read';

}

[Berislav Lopac]

Re: Variable in Array

dr. zoidberg wrote:[color=blue]
> Is it possible to put Variable in Array? Here is what I need:
>
> $array = Array($a,$b);
>
> $a = 'something';
> $b = 'something else';
>
> foreach ($array as $val) {
> echo "$val";
> }
>
> Output should be:
>
> something
> something else
>
> Array is:
>
> Array
> (
> [0] => $a
> [1] => $b
> )
>
> If this is not possible is there any other way to do this? Thing is
> that I need to display some data based on array content.
>
> So far I have used:
>
> if (in_array('5', $array)) {
>
> echo 'data that should be display based on array value. I cant put
> this data in array because array is stored in cookie and then read';
>
> }[/color]

Use associative arrays, i.e. use keys:

$array = array('a' => 'something',
'b' => 'something else');

Now you can have:

echo array['a'];

Berislav

--
If the Internet is a Marx Brothers movie, and Web, e-mail, and IRC are
Groucho, Chico, and Harpo, then Usenet is Zeppo.

[dr. zoidberg]

Re: Variable in Array

Berislav Lopac wrote:[color=blue]
> dr. zoidberg wrote:
>[color=green]
>>Is it possible to put Variable in Array? Here is what I need:
>>
>>$array = Array($a,$b);
>>
>>$a = 'something';
>>$b = 'something else';
>>
>>foreach ($array as $val) {
>>echo "$val";
>>}
>>
>>Output should be:
>>
>>something
>>something else
>>
>>Array is:
>>
>>Array
>>(
>> [0] => $a
>> [1] => $b
>>)
>>
>>If this is not possible is there any other way to do this? Thing is
>>that I need to display some data based on array content.
>>
>>So far I have used:
>>
>>if (in_array('5', $array)) {
>>
>>echo 'data that should be display based on array value. I cant put
>>this data in array because array is stored in cookie and then read';
>>
>>}[/color]
>
>
> Use associative arrays, i.e. use keys:
>
> $array = array('a' => 'something',
> 'b' => 'something else');
>
> Now you can have:
>
> echo array['a'];[/color]

Like I said, I will save that Array into cookie and I cant save Array
values, they would be too big for cookie.

[Pedro Graca]

Re: Variable in Array

dr. zoidberg wrote:[color=blue]
> Is it possible to put Variable in Array? Here is what I need:
>
> $array = Array($a,$b);
>
> $a = 'something';
> $b = 'something else';
>
> foreach ($array as $val) {
> echo "$val";
> }
>
> Output should be:
>
> something
> something else[/color]

Maybe variable variables are what you're after:

<?php
$array = array('a', 'b');
$a = 'something';
$b = 'something else';

foreach ($array as $val) {
echo ${$val}, "\n";
}
?>


Reference: http://www.php.net/manual/en/languag...s.variable.php

--
USENET would be a better place if everybody read: : mail address :
http://www.catb.org/~esr/faqs/smart-questions.html : is valid for :
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http://www.expita.com/nomime.html : to 10K bytes :

[Berislav Lopac]

Re: Variable in Array

Pedro Graca wrote:[color=blue]
> dr. zoidberg wrote:[color=green]
>> Is it possible to put Variable in Array? Here is what I need:
>>
>> $array = Array($a,$b);
>>
>> $a = 'something';
>> $b = 'something else';
>>
>> foreach ($array as $val) {
>> echo "$val";
>> }
>>
>> Output should be:
>>
>> something
>> something else[/color]
>
> Maybe variable variables are what you're after:
>
> <?php
> $array = array('a', 'b');
> $a = 'something';
> $b = 'something else';
>
> foreach ($array as $val) {
> echo ${$val}, "\n";
> }[/color]

Even better:

$array = array('a', 'b');
$values = array('a' => 'something',
'b' => 'something else');

foreach ($array as $val) {
echo $values[$val]. "\n";
}

That way you don't infest your code with too many variables.

Berislav


--
If the Internet is a Marx Brothers movie, and Web, e-mail, and IRC are
Groucho, Chico, and Harpo, then Usenet is Zeppo.

[Erwin Moller]

Re: Variable in Array

dr. zoidberg wrote:

<snip>
[color=blue]
>
> Like I said, I will save that Array into cookie and I cant save Array
> values, they would be too big for cookie.[/color]

No, you didn't. You echoed that.
And why can you not store an array in a cookie?

If you have too much data for a cookie, the way you store it inside the
coocie won'y help you a lot.

If you have too much data for a cookie, use a session.

Regards,
Erwin Moller

[dr zoidberg]

[solved] Re: Variable in Array

Pedro Graca wrote:[color=blue]
> dr. zoidberg wrote:
>[color=green]
>>Is it possible to put Variable in Array? Here is what I need:
>>
>>$array = Array($a,$b);
>>
>>$a = 'something';
>>$b = 'something else';
>>
>>foreach ($array as $val) {
>>echo "$val";
>>}
>>
>>Output should be:
>>
>>something
>>something else[/color]
>
>
> Maybe variable variables are what you're after:
>
> <?php
> $array = array('a', 'b');
> $a = 'something';
> $b = 'something else';
>
> foreach ($array as $val) {
> echo ${$val}, "\n";
> }
> ?>[/color]

TNX!!

[Pedro Graca]

Re: Variable in Array

Berislav Lopac wrote:[color=blue]
> Pedro Graca wrote:[color=green]
>> [... inferior "solution" snipped][/color][/color]
[color=blue]
> Even better:
>
> $array = array('a', 'b');
> $values = array('a' => 'something',
> 'b' => 'something else');
>
> foreach ($array as $val) {
> echo $values[$val]. "\n";
> }[/color]

I wouldn't say this is even better;
I'd say this is a million times much better!



One more tip to add to bag-of-tricks:

*----------------------------------------------------------*
* Add another level of indirection and simplify your code. *
*----------------------------------------------------------*



Thank you, Berislav
--
USENET would be a better place if everybody read: : mail address :
http://www.catb.org/~esr/faqs/smart-questions.html : is valid for :
http://www.netmeister.org/news/learn2quote2.html : "text/plain" :
http://www.expita.com/nomime.html : to 10K bytes :

[dr. zoidberg]

Re: Variable in Array

Erwin Moller wrote:[color=blue]
> dr. zoidberg wrote:
>
> <snip>
>[color=green]
>>Like I said, I will save that Array into cookie and I cant save Array
>>values, they would be too big for cookie.[/color]
>
>
> No, you didn't. You echoed that.
> And why can you not store an array in a cookie?
>
> If you have too much data for a cookie, the way you store it inside the
> coocie won'y help you a lot.
>
> If you have too much data for a cookie, use a session.[/color]

Data needs to be retrieved againg, so session is not an option. Anyway
Pedro Grace gave me great tip, I didn't know about variable variables
before. Instead od puting while string info array (to much data), I only
put one letter per string.

Tnx all.

[Garp]

Re: Variable in Array

"dr. zoidberg" <linux@ns.cis.u 7.da.ru> wrote in message
news:c4g4uh$2i7 jab$1@ID-93631.news.uni-berlin.de...[color=blue]
> Is it possible to put Variable in Array? Here is what I need:
>[/color]
<snip>

On top of everything else, you can tinker with serialization - that's what
it's for.

This should work:

setcookie('myar ray',serialize( $myarray));
.....
$myarray=unseri alize($_COOKIE['myarray']);

HTH
Garp