already knows that md5 is irreversible.
there is a simple way to generate token
$token = md5 ($username.$password.$regtime);
1. If you can"t reverse it, why is token only valid for 24 hours?
generated validation link
register/active.php?verify= ".$ token."
2. I know that token does not contain spaces of slash symbols. Why does the code need to write
$verify = stripslashes (trim ($_ GET ["verify"]));
stripslashes when activated? there is no need for
trim and no need for ha
think about why session sets the validity period!
first question:
second question:
I remember someone once said that the CAPTCHA is our last line of defense. If we don't set the validity period, won't this last line of defense also fall down?
Previous: Ie browser style property assignment problem?
Next: Hello, everyone. I am a beginner. Which tag is better to choose when making web pages with html5?
try the events and methods of jqgrid api, are useless, ask the boss what good methods are available ...
brief: because Mini Program s project uses wepy s framework, but you don t quite understand that the role of this interceptor is to integrate all the interfaces? Or? ...
recently I was learning jwt, but encountered a problem. the user enters the user name and password and sends it to the server, which encrypts it and returns it to token, with this token for every front-end request. so I have a problem: if the user ent...
...
there is no problem with using this livereload on sublime, and it is also available in the plug-in library of visual studio code. It cannot be used after installation. It is mainly realized that the livereload, that clicks on the browser cannot listen in...
for example, for a shopping website, after adding an item to the database through the background, how to generate a page of the product for users to visit? I hope you can help ~ Thank you very much! ...
Please explain in detail if you have the picture, ...
http.conf Listen 8090 Include conf extra httpd-vhosts.conf has been enabled LoadModule vhost_alias_module modules mod_vhost_alias.so has been enabled LoadModule authz_host_module modules mod_authz_host.so has been enabled DocumentRoot "E: web " ...
after the backend queries the data by conditional paging, the front-end template displays the paging as shown in the figure. Now return all the data when you click on the second page. How to bring the previous query conditions. ...
when doing a mobile web page, you will always encounter the button near the bottom and centered. When there is content, no content, or when the content is full, it is still at the bottom. How to do this ? what should I do in react ...
I would like to ask the bosses, is the current Mini Program can jump to the mobile app store? Because I saw the web-view tag, didn t it say that you can open the H5 page in Mini Program, so isn t that the same as the H5 jump? how do you do it if you c...
Student information management needs to be designed in the project. Contains grade, class, students and other information. but there is a problem. The grade of the students changes every year, and the first grade is promoted to the second grade. how ca...
A novice at the back end is working on a note-taking website and has just learned the basics of php for half a month. Now he has learned that the interaction between php and html needs to be done by submitting the data in the < form > form. According to...
multilingual secondary directory, http: xx.com lang link , How to automatically add lang, to the link address of the page, such as http: xx.com lang xxx...
my code https: codepen.io zxq2233 pe. each of the four boxes accounts for 25%, and the total width should be 100%. Why is there a blank on the right side? How to deal with it? ...
it can be accessed normally on the local server, and the error message shown in the figure will be displayed on the server. What will be the problem with the unauthorized domain name ? ...
function Test(){ this.func1=function(){ console.log("func1") } this.func2=function(){ console.log("func2") } this.func3=function(){ console.log("func3") } this.all=function...
<script src="http: libs.baidu.com jquery 1.9.0 jquery.js">< script> <script type="text javascript"> $(document).ready(function(){ $("-sharpnav > li").find("a").click(function(...
php determines whether the current time is a working day? How to implement in code? Please give your advice Thank you very much for your advice, but my demand is working days, not Monday to Friday, except national holidays and weekends ...
other phones run normally, but oppor11 enters the gallery and selects a picture. Clicking Open is useless, and it will jump back to the form page, but it does not choose to go to the above . Why is this a problem? how to solve this problem? trouble...