Question

I’m currently trying to use array_diff to remove 1 value from an array.

The code looks like this right now:

$item_id = 501;
$array = array_diff($user_items, array($item_id));

user items array: 501,501,502,502

results correctly in array: 502,502

Is it possible to remove only 1×501 instead of 2×501 value? or said differently: limit the removal by 1 value

array is then: 501,502,502

Any advice is appreciated

Answer 1

How about searching for the item, then removing it if it exists?

$key = array_search($item_id, $user_items)
if ($key !== FALSE) {
  unset($user_items[$key]);
}

Using unset isn’t quite as straightforward as you’d think. See Stefan Gehrig’s answer in this similar question for details.