Universal Time Identificator

• Time÷based sortable ID
• URL friendly, uses just 9 characters/bytes
• SHould work for more than next 500 years

Attribute	Value	Note
Alphabet base	6 bits	2 ^ 6 = 64
Alphabet count	64 letters	-, 0-9, A-Z, _, a-z
Nanoseconds base	54 bits	6 bits per letter * 9 letters
Time sortable	YES	Alphabet is in ASCII order

Examples:

ID	Nanoseconds	Date and time
4jT09VzfN	01 616 145 904 040 664	Fri Mar 19 2021 09:25:04.040664 GMT+0000
4p6ZWOQk-	01 640 995 200 000 000	Sat Jan 01 2022 00:00:00.000000 GMT+0000
V--------- (max)	18 014 398 509 481 984	Mon Nov 07 2540 23:35:09.481984 GMT+0000

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Instal with Composer

Edit composer.json:

{
    ...,
    "repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/attitude/universal-time-identificator"
        }
    ],
    "require": {
        "attitude/universal-time-identificator": "dev-main"
    }
}

Usage

<?php require 'vendor/autoload.php'; // When used with composer

echo UniversalTime\Identificator\UTID::decode('4jT09VzfN');
// 1616145904040664

echo UniversalTime\Identificator\UTID::encode(1640991600000000);
// 4p6bryL--

Why not just use UUID v1?

No special reason. UTID je ment for small projects that don't require extra info embeded in the UUID.

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Enjoy!

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Created by martin_adamko