How to scan QR code in php

php method to implement scanning QR code: first upload the taken photos to php; then send the link and encrypted account password to the server; then generate a login information; finally request the interface for login information, And use the "php-zbarcode" extension to realize QR code recognition.

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The basic logic diagram is like this, but there are still several possibilities for the actual situation

For example, QQ login, WeChat login, Weibo login, the basic design is similar, there will be some differences according to the actual situation

The problem is, if the interface is designed properly to ensure the security and speed of data

The designed technology is not complicated, but it needs to be put together softly

First of all, you need an HTML5 function to call the mobile phone camera, then take a photo, upload the taken photo to PHP, which is the interface for PHP to recognize the QR code, and then return the link, use the session logged in to the current web page, or cookies. The encrypted account password,

and then a confirmation button pops up. If so, send the link and encrypted account password to the server. In fact, it is a login, and then generate a login information, such as timeout, whether it is unique, Log in and squeeze out the waiting state. Then the pc login uses the ajax

interface to request login information in sequence. If it contains the encrypted information of this plea, if the status is passed, the decrypted return information will contain the account password (not Security), or directly create a quick login and return a special encrypted data

to log in to the quick login interface.

php QR code recognition can use the php extension php-zbarcode. When you have time, set up the virtual machine and test it together.

This is generally used for multi-point universal login, and can be used on both web pages and apps. It’s a strange demand, hey!

There are two modes: the two are very similar, but there are some differences, the essence is the same

1, similar to the web page quick version QQ login

2, similar to the WeChat version of quick login

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