混淆：

https://www.php-obfuscator.com/?demo

https://github.com/pk-fr/yakpro-po

加密：

http://phpjiami.com/phpjiami.html

http://zhaoyuanma.com/phpcodefix.html

http://enphp.djunny.com/

技术博客：

https://sec2hack.com/

http://blog.evalbug.com/

https://www.leavesongs.com/PENETRATION/unobfuscated-phpjiami.html

http://www.liqingbo.cn/blog-1325.html

https://www.waitalone.cn/php-decode.html

https://blog.b1uew01f.net/learnnotes/tips/330.html