[1]+[2] != [1,2] (behavior of array union operator on non-associative arrays)

Question

[1=>0]+[2=>0] yields [1=>0,2=>0]. But is there any trick to use such syntax sugar for [1]+[2]. So [1]+[2] yeilds [1,2]?

note: My concern is about such syntax, not about other related PHP functions.

Answer 1

Use array_merge() instead. I stumped across so much of strange behavior of + used with arrays that I promised myself to never use it ever again.

Answer 2

+ is the array union operator, which will skip existing keys.

You want array_merge() which will concatenate them in your example (it does that for arrays with numeric keys).

Unfortunately for you, there is no way to overload the + operator to perform anything different.