<?php
$var = [1,2,3];
$var = [
    1,
    2,
    3
];
$var = [
    1,
    2,
    /* three */ 3,
];
$var = [
    1,
    2,
    /* three */ 3,
];

$var = [
    1 => 'one',
    2 => 'two',
    3 => 'three'
];
$var = [
    1 => 'one',
    2 => 'two',
    /* three */ 3 => 'three',
];
$var = [
    1 => 'one',
    2 => 'two',
    /* three */ 3 => 'three',
];

$var = array(
    'one' => function() {
        $foo = [1,2,3];
        $bar = [
            1,
            2,
            3
        ];
    },
    'two' => 2,
);

return [
    [
        'foo' => true,
    ]
];

// phpcs:set Generic.Arrays.ArrayIndent indent 2

$var = [
  1 => 'one',
  2 => 'two',
  /* three */ 3 => 'three',
];