shifting values in an array

JLW

Hi, I have been looking at array_splice but need some help.

I have an array

ItemNumber[0] -> 124
ItemNumber[1] -> 125
ItemNumber[2] -> 126

If one is deleted I need to shift all of the other numbers up to fill in the one that was deleted

so if someone chose item 125 to delete
then my code says: unset($_SESSION['Items'][$delete]);

where $delete is = 125

then I am left with

ItemNumber[0] -> 124
ItemNumber[1] -> nothing here
ItemNumber[2] -> 126

but when I go back through the array to print it out, if I use count() I get two, so it loops through the array twice, the second value isn't printed because there isn't one and the last value is left off because the loop exits. I have looked into array_splice but I am not sure if I use this if I actually still need unset? Also I haven't been able to get array_splice to work correctly for me.

laserlight

hmm... the problem here is that you're presenting 2 different problems.
In one, you talk about:

ItemNumber[0] -> 124
ItemNumber[1] -> 125
ItemNumber[2] -> 126

In another, you talk about:
unset($_SESSION['Items'][$delete]);

It is not clear (to me at least), how they are related.

Incidentally, you might want to take a look at the [man]foreach/man construct, so as to avoid having to check the number of array elements.

Shrike

unset() removes the entire array index, not just the value. Perhaps you need to reindex the array, since you'd have a missing index.

Xenos2086

try this:

foreach($array $key => $value)
{
if ($value=="")
unset($array[$key])
}

JLW

Thanks for the input! I got it, sorry if I wasn't clear. The problem was that I was inserting items into an array and printing it out. But whenever an element was deleted from the array there was just a blank in the array position. So I used array splice which takes out the item I want to delete and moves everything up by one, so I have no blank positions in my array and I am no longer using unset();

array_splice($Items, $delete, 1);