首页 \ 问答 \ PHP - preg_match解释[关闭](PHP - preg_match explanation [closed])

PHP - preg_match解释[关闭](PHP - preg_match explanation [closed])

我是PHP的初学者我只是想问有人可以向我解释这行代码。

(preg_match('/^\w{5,}$/', $username))

先谢谢你。 :)非常感谢您的回答。 :)


Im a beginner in PHP I just want to ask can someone explain to me this line of code.

(preg_match('/^\w{5,}$/', $username))

Thankyou in advance. :) Your answer is so much appreciated. :)


原文:https://stackoverflow.com/questions/42513863
更新时间:2022-04-16 11:04

最满意答案

测试库的典型方法是编写一段单独的代码来运行库,并将结果与​​预期结果进行比较。

在这种情况下, main将进入测试程序,而不是库。 在库中有一个主管是不对的,如果用户忘记提供main话,将导致库的用户非常好奇的问题...


The typical way to test a library is that you write a separate piece of code that exercises the libary, and compares the result with expected results.

In this case, the main will go into the test program, not the library. Having a main in the library is not the right thing, and will lead to very curious problems for the user of the library if the user forgets to supply a main...

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