Question

I have an array, and I don’t know how may elements there are in the array. It could be 1, it could be 500, but I need the maximum amount to elements to be 21.

I know I can check the length using count(), but how do I chop the rest off if it is too long? Thanks.

Answer 1

You can use SplFixedArray it a good way to manage fixed size array …..

   $array = new SplFixedArray(21);

Example

   $array =  SplFixedArray::fromArray($array);
   $array->setSize(21);

See PHP Documentation