如何在PHP中制作短随机唯一密钥(例如YouTube视频ID)? [英] How can I make short random unique keys, like YouTube video IDs, in PHP?

问题描述

有什么方法可以创建唯一的键，例如YouTube视频网址中使用的键(例如: https://www.youtube .com/watch?v = nWChTnkVdKE )?

Is there any way to create unique keys like those used in YouTube video urls (ex: https://www.youtube.com/watch?v=nWChTnkVdKE)?

推荐答案

该想法是在其他数学基础中转换唯一的整数(例如当前时间).

The idea is to convert a unique integer (such as current time) in an other mathematical base.

PHP中非常简单的方法:

A very simple way in PHP :

// With this precision (microsecond) ID will looks like '2di2adajgq6h'

$id = base_convert(microtime(false), 10, 36);


// With less precision (second) ID will looks like 'niu7pj'

$id = base_convert(time(), 10, 36);

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