5 ms·

In addition, you only need to specify the first key to create a one-based array. Indexing will carry on from there. [1 => [4, 5, 6], [7, 8, 9], [10, 11, 12

In addition, you only need to specify the first key to create a one-based array. Indexing will carry on from there. [1 => [4, 5, 6], [7, 8, 9], [10, 11, 12]]