canvas randomly generates image verification code

21Jul2016

PHP dynamically and randomly generates verification code code. The following is the rendering. This rendering is the rendering without interference code. The following is the class code. Copy the code as follows: ?php /************************ *************************** //FILE:

25Jul2016

Detailed explanation of how PHP randomly generates image verification codes

22Oct2019

We are no strangers to verification codes. They can be seen everywhere, such as: login and registration, forum flooding, ticket brushing, password cracking, etc. Its main function is to block machine requests and ensure that business is not interfered with machine submission requests.

25Jul2016

PHP verification code PHP non-preset image generates verification code

01Jun2017

This article mainly introduces in detail the specific method of randomly generating a verification code in js. It has certain reference value. Interested friends can refer to it.

13Jul2016

PHP program to generate verification code images. A php downloaded from a foreign website generates a verification code image code. This is more practical. We also gave an example. Friends in need can click on it to save it as php and use it. The code is as follows Copy

29Jul2016

:This article mainly introduces the PHP drawing function to generate image verification code. Students who are interested in PHP tutorials can refer to it.

21Jun2018

This article mainly introduces examples of PHP generating image verification codes, and also introduces the method to achieve the effect of clicking to switch (can’t see clearly? Change one). Friends who need it can refer to it.