php验证码
一.总述:codecheck,php验证码程序。 二.详解:①index.html测试文件 ②CodeFactory.php产生五种图片验证码（即数字验证码、字符验证码、汉字验证码、仿谷歌验证码、算术表达 式验证码）文件 ③CodeCheck.php测试文件（接收index.html文件的异步请求，并判断输入的验证码是否正确） ④official.ttf，汉字验证码中汉字所用字体文件 ⑤t1.ttf，仿谷歌验证码中字符所用字体文件 三.php验证码原理:先随机产生验证码上的内容，并将此内容写入session（方便后面校验），再使用php绘图技术 绘制带有前面所产生内容的图片，并在图片上加上一些干扰线，最后输出图片。
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
Django
The Web framework for perfectionists with deadlines.
Laravel
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
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Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft
Open source projects and samples from Microsoft.
Google
Google ❤️ Open Source for everyone.
Alibaba
Alibaba Open Source for everyone
D3
Data-Driven Documents codes.
Tencent
China tencent open source team.
