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        0 到 1.0 php 之间的随机浮点数

        时间:2024-05-11

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                  本文介绍了0 到 1.0 php 之间的随机浮点数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  可能重复:
                  php中的随机浮点数

                  是否可以创建一个介于 0 和 1.0 之间的随机浮点数,例如 0.4、0.8 等.我使用了 rand 但它只接受整数.

                  Is it possible to create a random float number between 0 and 1.0 e.g 0.4, 0.8 etc. I used rand but it only accepts integers.

                  推荐答案

                  mt_rand() / mt_getrandmax();
                  

                  避免使用 rand() 函数,因为它通常依赖于平台的 C rand() 实现,通常以非常简单的模式创建数字.请参阅 php.net 上的此评论

                  Avoid the rand() function, since it usually depends on the platform's C rand() implementation, generally creating numbers with a very simple pattern. See this comment on php.net

                  更新:在 php 7.1 中,rand()已更改,现在只是 mt_rand() 的别名.因此现在也可以使用 rand().

                  Update: In php 7.1 the rand()has been changed and is now merely an alias of mt_rand(). Therefore it is now ok to use rand(), too.

                  这篇关于0 到 1.0 php 之间的随机浮点数的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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