如何在PHP中循环遍历文本文件以查找特定的文本行 [英] How to loop through a text file in PHP to find a specific line of text

问题描述

我已经创建了一个程序，允许您输入用户名和密码，然后将其存储在文本文件中，当我想要登录时，我想让它循环通过具有usr /传入的文本文件查找您是否正确输入了凭据。我不知道该怎么做。请有人帮忙



我尝试过的事情：



i不要知道该怎么做!!!!

I have made a program that lets you enter the username and password then it stores it in a text file and when i want to login i want to make it so it loops through the text file that has the usr/pass in to find if you entered your credentials in correctly. I'm not sure how to do this. please can somebody help

What I have tried:

i do not know how to do it!!!!

推荐答案

if（isset（

_POST ['submit_btn']））

{

_POST['submit_btn']))
{

username =

username =

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