array_merge vs array_value用于重置数组索引

Question

I have 1 array that I want to re-index. I have found that both array_values and array_merge functions can do the job (and I don't need 2 arrays for the array_merge function to work).

Which is faster for a very large array? I would benchmark this, but I don't know how and don't have the large array yet.

Before re-index:

Array
(
    [0] => AB
    [4] => EA
    [6] => FA
    [9] => DA
    [10] => AF
)

After re-index:

Array
(
    [0] => AB
    [1] => EA
    [2] => FA
    [3] => DA
    [4] => AF
)

Answer 1

I haven't done the benchmarks either -- and if you need to be sure, you should do them.

That said, I would suspect that if one is preferable to the other, array_values() is going to be the way to go.

After all, what you want to do is exactly what array_values() was designed for.