Hi All,

Go figure... I sat down today to get some more work on my current
project; I got to a certain point where I need to step through an array
with a foreach loop. I found that I need to test for the current pointer
position of the array, but I haven't a clue as to how this might be
accomplished. I've been all over google and php.net, but I'm not finding
anything that will me do this.

Basically all I want to do is something like this:

if( current_arrayPointer_postition == n ){
... do this
}else{
...do this
}

Anyone know of a built-in PHP function that can assist with this, or can
you point me to a resource that could me code a solution?

thanks,

--

Mark
----------------------------
It was good to be the fire...
Better by far than to crawl and mew and suck and $h1t and die!
'Arthur C. Clarke'

On Aug 29, 2:40pm, mdw1...@mdw1982.com (Mark Weaver) wrote:
> Hi All,
>
> Go figure... I sat down today to get some more work on my current
> project; I got to a certain point where I need to step through an array
> with a foreach loop. I found that I need to test for the current pointer
> position of the array, but I haven't a clue as to how this might be
> accomplished. I've been all over google and php.net, but I'm not finding
> anything that will me do this.
>
> Basically all I want to do is something like this:
>
> if( current_arrayPointer_postition == n ){
> ... do this
>
> }else{
> ...do this
> }
>
> Anyone know of a built-in PHP function that can assist with this, or can
> you point me to a resource that could me code a solution?
>
> thanks,
>
> --
>
> Mark
> ----------------------------
> It was good to be the fire...
> Better by far than to crawl and mew and suck and $h1t and die!
> 'Arthur C. Clarke'

Is it a numeric array (i.e. not an associative array)? If so, you can
use foreach ($array as $index => $value)

Mark Weaver schreef:
> Hi All,
>
> Go figure... I sat down today to get some more work on my current
> project; I got to a certain point where I need to step through an array
> with a foreach loop. I found that I need to test for the current pointer
> position of the array, but I haven't a clue as to how this might be
> accomplished. I've been all over google and php.net, but I'm not finding
> anything that will me do this.
>
> Basically all I want to do is something like this:
>
> if( current_arrayPointer_postition == n ){
> ... do this
> }else{
> ...do this
> }

foreach isn't really like that. it uses (IIRC) an internal pointer of
it's own leaving the userland pointer where ever it is.

but:

$n = 5;
// make a new array with numeric keys starting at 0
$array = array_values(array);
// loop it
foreach ($array as $key => $val) {
if ($key == $n) {
echo "I got five on it";
} else {
echo "usual suspect";
}
}

>
> Anyone know of a built-in PHP function that can assist with this, or can
> you point me to a resource that could me code a solution?
>
> thanks,
>

On Fri, Aug 29, 2008 at 2:40 PM, Mark Weaver <mdw1982@mdw1982.com> wrote:

> Hi All,
>
> Go figure... I sat down today to get some more work on my current project;
> I got to a certain point where I need to step through an array with a
> foreach loop. I found that I need to test for the current pointer position
> of the array, but I haven't a clue as to how this might be accomplished.
> I've been all over google and php.net, but I'm not finding anything that
> will me do this.
>
> Basically all I want to do is something like this:
>
> if( current_arrayPointer_postition == n ){
> ... do this
> }else{
> ...do this
> }
>
> Anyone know of a built-in PHP function that can assist with this, or can
> you point me to a resource that could me code a solution?
>
> thanks,
>
> --
>
> Mark
> ----------------------------
> It was good to be the fire... Better by far than to crawl and mew and suck
> and $h1t and die!
> 'Arthur C. Clarke'
>
>
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
>
>
This may also as well as Jochem's suggestion: http://us2.php.net/key

--
-Dan Joseph

www.canishosting.com - Plans start @ $1.99/month.

"Build a man a fire, and he will be warm for the rest of the day.
Light a man on fire, and will be warm for the rest of his life."

At 2:40 PM -0400 8/29/08, Mark Weaver wrote:
>Hi All,
>
>Go figure... I sat down today to get some more work on my current
>project; I got to a certain point where I need to step through an
>array with a foreach loop. I found that I need to test for the
>current pointer position of the array, but I haven't a clue as to
>how this might be accomplished. I've been all over google and
>php.net, but I'm not finding anything that will me do this.
>
>Basically all I want to do is something like this:
>
>if( current_arrayPointer_postition == n ){
> ... do this
>}else{
> ...do this
>}
>
>Anyone know of a built-in PHP function that can assist with this, or
>can you point me to a resource that could me code a solution?

Try looking at "current"

http://www.php.net/current

Maybe that will .

Cheers,

tedd



--
-------
http://sperling.com http://ancientstones.com http://earthstones.com

Jochem Maas wrote:
> Mark Weaver schreef:
>> Hi All,
>>
>> Go figure... I sat down today to get some more work on my current
>> project; I got to a certain point where I need to step through an
>> array with a foreach loop. I found that I need to test for the
>> current pointer position of the array, but I haven't a clue as to how
>> this might be accomplished. I've been all over google and php.net,
>> but I'm not finding anything that will me do this.
>>
>> Basically all I want to do is something like this:
>>
>> if( current_arrayPointer_postition == n ){
>> ... do this
>> }else{
>> ...do this
>> }
>
> foreach isn't really like that. it uses (IIRC) an internal pointer of
> it's own leaving the userland pointer where ever it is.
>
> but:
>
> $n = 5;
> // make a new array with numeric keys starting at 0
> $array = array_values(array);
> // loop it
> foreach ($array as $key => $val) {
> if ($key == $n) {
> echo "I got five on it";
> } else {
> echo "usual suspect";
> }
> }

very nice... Thank you Jochem. That did the trick.

--

Mark
----------------------------
It was good to be the fire...
Better by far than to crawl and mew and suck and shit and die!
'Arthur C. Clarke'

Dan Joseph schreef:
> On Fri, Aug 29, 2008 at 2:40 PM, Mark Weaver <mdw1982@mdw1982.com> wrote:
>

....

>>
> This may also as well as Jochem's suggestion: http://us2.php.net/key

not unless you wan't a headache (re-read the bit about foreach's internal pointer):

php -r '$r = array("a","b","c"); next($r); $K = key($r); foreach ($r as $k => $v) { echo "$K ", key($r), " $k\n"; }'

outputs:

1 1 0
1 1 1
1 1 2

>

tedd wrote:
> At 2:40 PM -0400 8/29/08, Mark Weaver wrote:
>> Hi All,
>>
>> Go figure... I sat down today to get some more work on my current
>> project; I got to a certain point where I need to step through an
>> array with a foreach loop. I found that I need to test for the
>> current pointer position of the array, but I haven't a clue as to how
>> this might be accomplished. I've been all over google and php.net,
>> but I'm not finding anything that will me do this.
>>
>> Basically all I want to do is something like this:
>>
>> if( current_arrayPointer_postition == n ){
>> ... do this
>> }else{
>> ...do this
>> }
>>
>> Anyone know of a built-in PHP function that can assist with this, or
>> can you point me to a resource that could me code a solution?
>
> Try looking at "current"
>
> http://www.php.net/current
>
> Maybe that will .
>
> Cheers,
>
> tedd
>
>
>
Thanks all for the ful suggestions. Actually Jochem's suggestion was
just what I needed. I was stuck at just how to test where the pointer
was and couldn't see a way out. I knew there had to be a simple, elegant
solution, but apparently was over-thinking it. Jochem put things back
into perspective for me.

--

Mark
----------------------------
It was good to be the fire...
Better by far than to crawl and mew and suck and shit and die!
'Arthur C. Clarke'

Mark Weaver schreef:
> tedd wrote:

....

>>
>> Try looking at "current"
>>
>> http://www.php.net/current
>>
>> Maybe that will .

not in the context of foreach() (I'll repeat the oneliner here
because tedd's old and has a crap email client ;-):

php -r '$r = array("a","b","c"); next($r); $K = key($r); foreach ($r as $k => $v) { echo "$K ", key($r), " $k\n"; }'

current() is akin to key() in that they both work on where the array pointer
currently is. not that current() returns a key ;-)

>>

.....

> Jochem put things back
> into perspective for me.

I'm having that printed on a T-Shirt :-P

>

At 11:10 PM +0200 8/29/08, Jochem Maas wrote:
>Mark Weaver schreef:
>>Jochem put things back into perspective for me.
>
>I'm having that printed on a T-Shirt :-P

Damn!

You get more T-Shirts than me. :-)

Cheers,

tedd
--
-------
http://sperling.com http://ancientstones.com http://earthstones.com