munix / munix
A Unique ID (64-bit Integer) Generator For PHP
Requires
- php: >=7.0.0
README
A unique random id generator that produces unique signed 64 bit integers without the need for a dedicated id server. The generated id's can be used as unique identifiers for objects. Collisions are guaranteed not to occur. This was built to run on one or several machines that accept multiple requests per second.
Install
composer install munix/munix
Requirements
Munix requires sqlite
to be installed and enabled in php.ini
. A small sqlite db it used to track number sequences within milliseconds of each other to prevent collisions. Yes, it's small. It just contains one table, one column, and one row (1 x 1).
Usage
To get an id, you only need to call one method, Munix\Munix::nextId(int $customId)
.
The only thing needed is a custom number from 0 (inclusive) to 1023 (inclusive). For a single project, any number in that range will suffice. However, if it's a distributed system, each machine will need a different number, to avoid collisions.
If no custom id
is supplied, the default value of 0
is used.
<?php use Munix\Munix; // Using a custom id of 5 $id = Munix::nextId(5); echo $id;
Will give an output similar to
85164824987754496
To avoid passing the custom id
each time you need an id, set one permanently by calling Munix\Munix::setCustomId(int $customId)
.
<?php Munix::setCustomId(2); Munix::nextId(); Munix::nextId();
TLDR;
Just call the nextId
method whenever you need a unique Id.
Epoch
You can specify an epoch, in milliseconds by calling Munix\Munix::setEpoch(int $timestampInMilliseconds)
.
The default epoch is 1640991600000
, Jan 1st, 2022.
<?php Munix::setEpoch(1640991600000); Munix::setCustomId(1); // Generate all you want Munix::nextId(); Munix::nextId();
Dissection
To dissect any id generated by munix,
<?php $id = Munix::nextId(); $object = new MunixId($id); var_dump($object)
Or Even better
<?php $object = Munix::nextIdAsObject(); var_dump($object)
The epoch should only be set once at the beginning of a project.
Contact
Twitter: @phrenotyper
Email: dev@paulrobert.xyz