What are the good materials for PHP deep learning?

After learning PHP for a year, I feel that the basics are okay. I want to continue learning PHP. Please recommend the best materials, books, websites, and documents ...... after learning PHP for a year, I feel that the basics are okay. I want to continue learning PHP. Please recommend the best materials, books, websites, and documents ......

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After learning PHP for a year, I feel that the basics are okay. I want to continue learning PHP. Please recommend the best materials, books, websites, and documents ......

The first level is the deep learning of PHP technology, such as PHP Strings, arrays, files, and PHP advanced features, and PHP operating principles. The second level is the deep development of Web technology: such as in-depth Http protocol, Linux technology, Web server technology, front-end JS technology, MySQL and NoSQL technology. The third layer is the expansion of programming ideas and capabilities: such as data structure and algorithm design, design patterns, good code principles and skills, and large-scale website development technology.
Follow this outline to learn more: Advanced PHP Learning Outline

Practical tutorial on the backend network I recommend
Various PHP frameworks such as Thinkphp and YII

Weibo, mall, and other practical projects

Bbs.houdunwang.com

In-depth PHP: Object-oriented, model and Practice