PHP range() 関数を使用して数値配列を作成する方法の概要

range($start, $end, $step)

$numbers = range(1, 10);

print_r($numbers);

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
    [7] => 8
    [8] => 9
    [9] => 10
)

$numbers = range(0.1, 1.0, 0.1);

print_r($numbers);

Array
(
    [0] => 0.1
    [1] => 0.2
    [2] => 0.3
    [3] => 0.4
    [4] => 0.5
    [5] => 0.6
    [6] => 0.7
    [7] => 0.8
    [8] => 0.9
    [9] => 1
)

$numbers = range(10, 1, -1);

print_r($numbers);

Array
(
    [0] => 10
    [1] => 9
    [2] => 8
    [3] => 7
    [4] => 6
    [5] => 5
    [6] => 4
    [7] => 3
    [8] => 2
    [9] => 1
)

$letters = range('a', 'f');

print_r($letters);

Array
(
    [0] => a
    [1] => b
    [2] => c
    [3] => d
    [4] => e
    [5] => f
)

$letters = range('a', 'e', 2);

print_r($letters);

Array
(
    [0] => a
    [1] => c
    [2] => e
)

$start = $_POST['start'];
$step = $_POST['step'];

$numbers = range($start, 100, $step);

print_r($numbers);