Remove values from multiple arrays

[ikenD]

Hi there,

I have 3 POSTed arrays - each with the same amount of keys, but some values will be missing.
I am trying to remove related items from the arrays where $postQty hs no value in it.

Example Output:
$postID =
Array ( [0] => 2 [1] => 4 [2] => 7 )

$postQty =
Array ( [0] => 20 [1] => [2] => 5 )

$postQtyGot=
Array ( [0] => 7 [1] => [2] => )

In $postQty above, the second key has no value - so after using some php function, I would then like to see the following (only 2 elements in each array mapping to the other arrays)):

$postID =
Array ( [0] => 2 [1] => 7 )

$postQty =
Array ( [0] => 20 [1] => 5 )

$postQtyGot =
Array ( [0] => 7 [1] =>

Here is my code so far :

$countID = count($postID);

$x=0;

echo $countID;

while ($x < $countID) {

if( $postQty[$x] =='' ){

unset($postID[$x]);
unset($postQty[$x]);
unset($postQtyGot[$x]);

continue;
}
	$x++;
}

echo '<pre>';
	print_r($postID);
	print_r($postQty);
	print_r($postQtyGot);
echo '</pre>';

exit();

It takes ages to run, then only echos echo $countID;

Anyone able to see what I am doing wrong /

much Appreciated, really, in advance,

ikenD

[Weedpacket]

I think [man]array_filter[/man] to remove empty elements from $postQty, [man]array_intersect_key[/man] to keep the elements of $postID that are represented in what's left of $postQty would do the job:

array_intersect_key($postID, array_filter($postQty))

Something like that, anyway - I'm not clear on where $postGot would fit into that - but the point is that there are plenty of functions available for working with arrays.

[ikenD]

Weedpacket;10942407 wrote:

I think [man]array_filter[/man] to remove empty elements from $postQty, [man]array_intersect_key[/man] to keep the elements of $postID that are represented in what's left of $postQty would do the job:

array_intersect_key($postID, array_filter($postQty))

Something like that, anyway - I'm not clear on where $postGot would fit into that - but the point is that there are plenty of functions available for working with arrays.

Well, I have to say, thats just brilliant - and so much appreciated.

I was trying to do something TOO complicated by far - this is so simple and works fine

Many thanks

ikenD