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tengzbiao/php-snowflake
=======================

A package for create unique id by snowflake

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Since Mar 1Pushed 6y agoCompare

[ Source](https://github.com/tengzbiao/php-snowflake)[ Packagist](https://packagist.org/packages/tengzbiao/php-snowflake)[ RSS](/packages/tengzbiao-php-snowflake/feed)WikiDiscussions master Synced 4w ago

READMEChangelogDependenciesVersions (1)Used By (0)

snowflake
---------

[](#snowflake)

Twitter雪花算法PHP版本

生成规则
----

[](#生成规则)

64位标识唯一ID

> 第一位0 - 41位毫秒级时间戳 - 2位数据中心ID - 6位机器ID - 2位扩展位 - 12位毫秒内顺序ID

概述
--

[](#概述)

- php-fpm多进程并发导致ID重复，使用基于信号量代替文件锁和redis锁
- ID趋势递增
- 支持4个数据中心、64台机器
- 每毫秒最多可生成4096个ID

使用
--

[](#使用)

- 安装sysvsem和sysvshm扩展(以php-7.1.13版本为例)

```
# cd php-7.1.13/ext/sysvsem
# phpize
# configure
# make && make install

# cd php-7.1.13/ext/sysvshm
# phpize
# configure
# make && make install

在php.ini增加、然后重启php-fpm
extension=sysvsem.so
extension=sysvshm.so

```

- composer require tengzbiao/php-snowflake

```