Downgrade the required PHP version

[DisboardTetta]

Is there really a reason to limit the PHP version to such a high version?

    "require": {
        "php": "^8.1"
    },

After reviewing the source code, I didn't find any syntax specific to PHP 8.1+. According to what I saw, the minimum version for your class is PHP 7.1 due to

Example #4 Class constant visibility modifiers, as of PHP 7.1.0
from the link https://www.php.net/manual/en/language.oop5.constants.php

I decided to try running php-alpine 7.2* on an older version of Docker, using your test example as a basis. I ran the following script:

$uuid3 = UUID::uuid3(UUID::NAMESPACE_DNS, 'php.net');
echo $uuid3; // 11a38b9a-b3da-360f-9353-a5a725514269
echo "<br/>";

// Generate a version 4 (random) UUID
$uuid4 = UUID::uuid4();
echo $uuid4; // e.g. 2140a926-4a47-465c-b622-4571ad9bb378
echo "<br/>";

// Generate a version 5 (name-based and hashed with SHA1) UUID
$uuid5 = UUID::uuid5(UUID::NAMESPACE_DNS, 'php.net');
echo $uuid5; // c4a760a8-dbcf-5254-a0d9-6a4474bd1b62
echo "<br/>";

// Generate a version 6 (lexicographically sortable) UUID
$uuid6_first = UUID::uuid6();
echo $uuid6_first; // e.g. 1ec9414c-232a-6b00-b3c8-9e6bdeced846
$uuid6_second = UUID::uuid6();
var_dump($uuid6_first < $uuid6_second); // bool(true)
echo "<br/>";

// Generate a version 7 (lexicographically sortable) UUID
$uuid7_first = UUID::uuid7();
echo $uuid7_first; // e.g. 017f22e2-79b0-7cc3-98c4-dc0c0c07398f
$uuid7_second = UUID::uuid7();
var_dump($uuid7_first < $uuid7_second); // bool(true)
echo "<br/>";

// Generate a version 8 (lexicographically sortable) UUID
$uuid8_first = UUID::uuid8();
echo $uuid8_first; // e.g. 017f22e2-79b0-8cc3-98c4-dc0c0c07398f
$uuid8_second = UUID::uuid8();
var_dump($uuid8_first < $uuid8_second); // bool(true)
echo "<br/>";
echo PHP_VERSION;

and get next:

11a38b9a-b3da-360f-9353-a5a725514269
d43211db-7d39-4d4c-9887-d64924c248d6
c4a760a8-dbcf-5254-a0d9-6a4474bd1b62
1f0e4b6e-76ec-6178-8f6c-832b2e845cdfbool(true)
019b6a35-c216-71f3-a81b-289741fa7ad8bool(true)
019b6a35-c216-830e-955d-578a47b18513bool(true)
7.2.34

The script's functionality is fully confirmed.