PHP 使用 ramsey-uuid 生成UUID笔记

今天项目中，想随机一个唯一id，想到php的 uniqid()，或者是其他方式生成一个唯一id。这种场景其实是很多的，但是也想不起之前是怎么写的，哪里写的，就看看laravel有没有依赖包，上网一搜，发现了这个：ramsey/uuidgithub地址：https://github.com/ramsey/uuid官网地址：https://benramsey.com/projects/ramsey-uuid/看来，作者应该有不少项目，没看，记录下，有时间了看！搜索一下，就大概了解了些，这里简单介绍下：ramsey/uuid，支持PHP5.4+，用于生成RFC 4122描述的 1,3,4,5 这几类的UUID(应该是这个，没看。。。)安装：composer require ramsey/uuid我这边安装完后，提示：ramsey/uuid suggests installing ircmaxell/random-lib (Provides RandomLib for use with the RandomLibAdapter)ramsey/uuid suggests installing ext-libsodium (Provides the PECL libsodium extension for use with the SodiumRandomGenerator)ramsey/uuid suggests installing ext-uuid (Provides the PECL UUID extension for use with the PeclUuidTimeGenerator and PeclUuidRandomGenerator)ramsey/uuid suggests installing moontoast/math (Provides support for converting UUID to 128-bit integer (in string form).)ramsey/uuid suggests installing ramsey/uuid-doctrine (Allows the use of Ramsey\Uuid\Uuid as Doctrine field type.)ramsey/uuid suggests installing ramsey/uuid-console (A console application for generating UUIDs with ramsey/uuid)不同的场景，可能还需安装不同的依赖包！作者在文档中提到了一个 'API文档'，ramsey/uuid，使用了 'ApiGen' 来生成API文档(作者又给我们介绍了一个PHP依赖包，看我们以后会不会用上)https://github.com/ApiGen/ApiGen使用方法：use Ramsey\Uuid\Uuid;use Ramsey\Uuid\Exception\UnsatisfiedDependencyException;try {    // Generate a version 1 (time-based) UUID object    $uuid1 = Uuid::uuid1();    echo $uuid1->toString() . "\n"; // i.e. e4eaaaf2-d142-11e1-b3e4-080027620cdd    // Generate a version 3 (name-based and hashed with MD5) UUID object    $uuid3 = Uuid::uuid3(Uuid::NAMESPACE_DNS, 'php.net');    echo $uuid3->toString() . "\n"; // i.e. 11a38b9a-b3da-360f-9353-a5a725514269    // Generate a version 4 (random) UUID object    $uuid4 = Uuid::uuid4();    echo $uuid4->toString() . "\n"; // i.e. 25769c6c-d34d-4bfe-ba98-e0ee856f3e7a    // Generate a version 5 (name-based and hashed with SHA1) UUID object    $uuid5 = Uuid::uuid5(Uuid::NAMESPACE_DNS, 'php.net');    echo $uuid5->toString() . "\n"; // i.e. c4a760a8-dbcf-5254-a0d9-6a4474bd1b62    } catch (UnsatisfiedDependencyException $e) {        // Some dependency was not met. Either the method cannot be called on a    // 32-bit system, or it can, but it relies on Moontoast\Math to be present.    echo 'Caught exception: ' . $e->getMessage() . "\n";}分享2篇文章：http://www.mamicode.com/info-detail-1576539.htmlhttp://www.jb51.net/article/75035.htm有点应付啊！有时间了再细看文档、源码，再总结！先知道有这个就行！