To create an array of a series of consecutive numbers or alphabetical letters or even any ASCII characters, you can use PHP function range():
$a = range(0, 100, 2); // $a is an array of even integers from 0 to 100.
$b = range('a', 'z'); // $b now contains all lowercase alphabetic letters from a to z.
To create an array of a series of identical values, use function array_fill():
$dumb = array_fill(-10, 3, 'dumb');
$dumb is as follows:
Array ( [-10] => 'dumb' [-9] => 'dumb' [-8] => 'dumb' )
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