[PHP] Testing for Current pointer position in array during iteration
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 help 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 help 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
Re: [PHP] Testing for Current pointer position in array during iteration
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 help 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 help me code a solution?
thanks,
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Testing for Current pointer position in array during iteration
On Fri, Aug 29, 2008 at 2:40 PM, Mark Weaver [EMAIL PROTECTED] 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 help 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 help 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 help as well as Jochem's suggestion: http://us2.php.net/key
--
-Dan Joseph
www.canishosting.com - Plans start @ $1.99/month.
Build a man a fire, and he will be warm for the rest of the day.
Light a man on fire, and will be warm for the rest of his life.
Re: [PHP] Testing for Current pointer position in array during iteration
At 2:40 PM -0400 8/29/08, Mark Weaver wrote:
Hi All,
Go figure... I sat down today to get some more work on my current
project; I got to a certain point where I need to step through an
array with a foreach loop. I found that I need to test for the
current pointer position of the array, but I haven't a clue as to
how this might be accomplished. I've been all over google and
php.net, but I'm not finding anything that will help me do this.
Basically all I want to do is something like this:
if( current_arrayPointer_postition == n ){
... do this
}else{
...do this
}
Anyone know of a built-in PHP function that can assist with this, or
can you point me to a resource that could help me code a solution?
Try looking at current
http://www.php.net/current
Maybe that will help.
Cheers,
tedd
--
---
http://sperling.com http://ancientstones.com http://earthstones.com
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Testing for Current pointer position in array during iteration
Dan Joseph schreef:
On Fri, Aug 29, 2008 at 2:40 PM, Mark Weaver [EMAIL PROTECTED] wrote:
...
This may also help as well as Jochem's suggestion: http://us2.php.net/key
not unless you wan't a headache (re-read the bit about foreach's internal
pointer):
php -r '$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
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Testing for Current pointer position in array during iteration
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 help 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'
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Testing for Current pointer position in array during iteration
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 help 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 help me code a solution?
Try looking at current
http://www.php.net/current
Maybe that will help.
Cheers,
tedd
Thanks all for the helpful 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'
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Testing for Current pointer position in array during iteration
Mark Weaver schreef:
tedd wrote:
...
Try looking at current
http://www.php.net/current
Maybe that will help.
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
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Testing for Current pointer position in array during iteration
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 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
