range: Update for PHP 8.3

[Girgias]

TODO Better examples I can't come up with them, and they can always be added later.

[TimWolla]

Some remarks. Will probably require a second pass depending on the changes you do.

[TimWolla]

LGTM once the three remaining remarks are resolved.

[TimWolla]

I'Ve now had a look at the rendered version. In addition to the new review marks, consider changing the example to:

<?php
echo implode(', ', range(0, 12)), PHP_EOL;

echo implode(', ', range(0, 100, 10)), PHP_EOL;

echo implode(', ', range('a', 'i')), PHP_EOL;

echo implode(', ', range('c', 'a')), PHP_EOL;

echo implode(', ', range('A', 'z')), PHP_EOL;
?>

with the output:

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100
a, b, c, d, e, f, g, h, i
c, b, a
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, [, \, ], ^, _, `, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z

The current example lacks the output entirely is is unncessarily verbose with the loops. The new example also showcases non-letter bytes.

[TimWolla]

I've now merged this, it's not getting better when it sits around for longer.