PHP Regex – Exploding 2 string dates in a single string

I have a date field that looks like the following:

$exampleOne = 'Sep 04-08';
$exampleTwo = 'Sep 29-Oct 01';

How can I separate them to become:

$exampleOneResult = {'Sep 04', 'Sep 08'};
$exampleTwoResult = {'Sep 29', 'Oct 01'};

I was thinking to make a loop of splitting ‘-‘ first, then splitting ‘ ‘ second, but I think that would be too resource heavy?

>Solution :

Split at the dash for from and to. And then check for the second value and supply if missing.

Doing such logic is not resource heavy. Why using a regex for such a simple thing?

This example is for PHP8+

$exampleOne = 'Sep 04-08';
$exampleTwo = 'Sep 29-Oct 01';

print_r(parseDateRange($exampleOne));
print_r(parseDateRange($exampleTwo));

function parseDateRange($dateRange): array {
    [$from, $to] = explode('-', $dateRange);
    [$month] = explode(' ', $from);
    if(!str_contains($to, ' ')) {
        $to = "$month $to";
    }

    return [$from, $to];
}

prints

Array
(
    [0] => Sep 04
    [1] => Sep 08
)
Array
(
    [0] => Sep 29
    [1] => Oct 01
)