removing an item from an array

Rasmus Schultz wrote:

I disagree - this is (or should be) a simple, atomic operation...
yet, you've got a function-call, an intermediary variable, a boolean
test, and an unset statement repeating the name of the array you're
deleting from.

This should be a simple statement or function/method-call, and in
most other languages it would be...

How simple is it? Does it:

1. Remove one occurrence of the element (presumably the first) or all?
2. Reindex the array (as someone else argued was necessary to make it
   "properly indexed" afterwards) or not?
3. Modify the array in-place or return a modified array?
4. Use type-strict or normal comparisons?

That's sixteen different interpretations of "remove a given value from
an array" right there. Leave support for any of them out and someone is
going to complain that they have to write a function to do what should
be a "simple statement". Support all of them and there will probably
still be someone who wants their own particular set of circumstances
catered for without having to write their own function to do it.

How simple is it? Does it:

1. Remove one occurrence of the element (presumably the first) or all?
2. Reindex the array (as someone else argued was necessary to make it
   "properly indexed" afterwards) or not?
3. Modify the array in-place or return a modified array?
4. Use type-strict or normal comparisons?

So to answer you, 1) one, 2), no, 3) in-place, 4) type-strict (I don't
see how a weakly-typed comparison for identifying an array value would
help anyone).
So ... using a different definition of "value" than that used by
array_search() and array_keys(), then?