iterating through an array

[elhoward]

I've got a form using POST so I'm able to get the keys and values from $HTTP_POST_VARS.

I can easily do a test for all the keys in $HTTP_POST_VARS to test for NULL values.

Four of the keys can be blank w/o a problem. Is there a way to iterate through the array, less the four keys that can hold NULL values?

The four values are at different positions in the array so I can't easily drop the last four positions.

Thanx for any info.

ELH

[vsego]

I'm not sure I got this right: you want to iterate through array and do something with all non-null values, right? If so, just add a condition that the value is not null:

foreach ($HTTP_POST_VARS as $key => $value)
if ($value) {
... do whatever ...
}

I think this will also skip $key=>"0" items. To avoid that, use
if ($value != "")...

(not sure, but I think that all $HTTP_POST_VARS values are strings, so this should work)

Of course, if you have to go through this array many times, create a temporary array:

$post_vars = array();
foreach ($HTTP_POST_VARS as $key => $value)
if ($value != "") $post_vars[$key] = $value;

Now, $post_vars has all $key=>$value items with non-null $value.