native ArrayPushArray(Array:which, const any:input, size = -1);
Array to copy to the cellarray
If not set, assumes the buffer size is equal to the
cellsize. Otherwise, the specified size is used.
Creates a new item at the end of the cellarray and copies the provided array
The input will be truncated if it is bigger than the cellsize the array
was created with.
Index of the new entry
If an invalid handle is provided or the resizing
operation runs out of memory, an error will be thrown.