Most people complain about PHP because of its scalability and clumsy codebase. But they never know the serious level of coding practice in PHP. PHP is versatile, you can build a web application within a day with PHP without following any strict code practices. But end of the day you made some buggy codebase.Even an advanced-level programmer doesn't follow any good practices in PHP, truly they don't know. For professional developers who want to make their PHP code in a good manner, I wrote this book with all essential advanced topics. If you are a beginner, intermediate, or advanced-level programmer, this book is very useful to all. I will update this book whenever new topics arise in the PHP world.