Summary of tutorials on the implementation of short addresses

In recent years, the use of QR codes has become more and more popular. The author recently encountered a job that required scanning QR codes to log in to the website, so I studied this mechanism and implemented it with code. After going through the whole process, let’s talk to you about QR code login and other things. Principle of QR code QR code was created by WeChat. When WeChat scanned the QR code to log into the web page WeChat, it felt very magical. However, once we understand its principle, it is not so magical. The QR code actually contains a URL request information through a black and white dot matrix. Scan the code on the terminal, request the URL, and perform the corresponding operation. The principle of general code scanning operation, WeChat login and Alipay scanning code payment are all based on this principle: 1. Request QR code The desktop side initiates a request for a QR code to the server. 2. Generate a QR code containing a unique id. The desktop terminal will randomly generate an id, which uniquely identifies the QR code for subsequent operations. 3. Scan the QR code on the mobile terminal and decode the URL request in the QR code. 4. The mobile terminal sends a request to the server. The mobile terminal sends a URL request to the server. The request contains two pieces of information. The unique id identifies which code was scanned, and the specific cook

1 in the browser. . Java QR code login process implementation code (including short address generation, including part of the code)

Introduction: In recent years, the use of QR codes has become more and more popular. This article mainly introduces the Java QR code login process implementation code, which includes short address generation. Those who are interested can learn about it.

2. php Netease free short address interface

##Introduction: php Netease free short address interface

3. php method to create a short address (var_export)

Introduction: php method to create a short address (var_export)

4. Php is converted to a source address based on a short address_PHP tutorial

Introduction: Php is converted to a source based on a short address address. ?php $url = http://dwz.im/14P; echo unshorten ( $url ); function unshorten($url) { $url = trim ( $url ); $headers = get_headers ( $url ); $location = $url; $short = false; foreach (

##5.

PHP Restore Weibo Short Address to Actual URL_PHP Tutorial

Introduction: PHP restores the Weibo short address to the actual URL. Since there is a character limit in Weibo, if you post a URL, it will automatically be converted into a short URL as described in my previous articles. How to convert the URL to a short URL, here we do the reverse

6.

PHP ajax asynchronous execution without waiting for the execution result, ajax processing method_PHP tutorial##Introduction: PHP ajax asynchronous execution without waiting for execution results, ajax processing method. PHP ajax asynchronous execution without waiting for execution results, ajax processing method short address generation application In, a web page snapshot needs to be generated based on a long address. This generation time is not instantaneous and cannot be predicted.

7.

How to convert signed integer to unsigned integer in PHP , php integer_PHP tutorial

Introduction: Convert signed integer to unsigned integer in PHP, php integer converts signed integer in PHP. Convert to unsigned integer method, PHP integer in a short address project, according to the mutual mapping algorithm of six characters and ID, when the ID exceeds 2147483647, six

8.

PHP generates short address

##Introduction:!DOCTYPE html html lang=en head meta charset=utf-8 / titleurlShort/title /head body form action= urlShort.php method=post input type=text size=16 name=url value=Input URL onfocus=if(this.value=='Input URL

#9. php method to convert IP address to real address

Introduction: Below I will share a method of using PHP to convert the obtained IP address into a real actual address. The code function is extracted from the famous Discuz source code of Kangsheng, and can return a short address and a detailed address according to actual needs. function convertip($ip,$integrity='simple'){ $return=''; $integrity=in_array($integrity,array('simple','full'))?$integr

10. PHP method to restore Weibo short address to actual URL

Introduction: Since there is a word limit in Weibo, if you post is a URL, it will be automatically turned into a short URL. Here we restore the short URL to the actual URL. Please refer to the following procedure to use PHP to restore the Weibo short address to the actual URL:

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