Here’s how you can create an array containing the numbers [1, 2, 3] in various programming languages:

 

Python

array = [1, 2, 3]

JavaScript

let array = [1, 2, 3];

Java

int[] array = {1, 2, 3};

C++

int array[] = {1, 2, 3};

PHP

$array = [1, 2, 3];