correct way to create array in php code example

Example 1: ccreate array php

$array = array(
    "foo" => "bar",
    "bar" => "foo",
);

Example 2: array in php

<?php

$cars = array("Maserati", "Porsche", "BMW");

echo "I like " . $cars[0] . ", " . $cars[1] . " and " . $cars[2] . ".";

?>