array pointer?

[Admin]

how do i change the internal pointer to a specific value in an array?

ugh.

[sde]

=/ dunno .. tried to find it.. what do you use internal pointers for?

[Admin]

here is what i did..

first find the position you want, then advance to that position.

PHP Code:

  $position=array_search($pic,$imageArray);
  for ($i=0; $i < $position; $i++)
  {
    next($imageArray);
  } 


i am using for an image gallery on a new site i am working on

the array pointer is the value that the array is currently sitting at (that is my understanding of it).

please excuse the UGLY urls, i am still in early development: http://sevensixtyone.com/photos.php?...7_dragonlounge

[sde]

seems like your kind of limited with pointers..

why not use something like this:

PHP Code:

<?
for ($i=0; $i < count($array); $i++)
{
  $imageArray[$i];
}
?>

then $i is always your current position.. i'm not sure i understand fully what you're using the pointer for though.

[joe_bruin]

you should not be using the internal array pointer for this. that is not what it is designed for, and some operations may modify it unexpectedly.

use indexes, like sde suggested.

PHP Code:

<?
$position = array_search($pic,$imageArray);

// get the next pic
$position++;
$next_pic = $imageArray[$position];
?>

if your arrays are hashed (key-based), use the each() function or similar.

[Admin]

i want to use the next() and prev() functions to determine what the next value and the previous value in the array are. if they dont exist then they return false, making it very easy to generate links.

how will the pointer get messed up if the only thing i am using the array for is this?

[sde]

PHP Code:

<?
// if next()
if($array[$i+1])
  echo "true";

// if previous()
if($array[$i-1])
  echo "true";
?>

[Admin]

check your email mike.

[Admin]

updated code, works just like before.
thanks for the info guys.