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Next Section： The underlying implementation of variables
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PHP underlying analysis video tutorial
Chapter1 PHP underlying analysis
1-1 PHP compilation features
1-2 The underlying implementation of variables
1-3 Implementation of variable types
1-4 symbol table roster of variables
1-5 What happens to assignment by value?
1-6 cow copy-on-write feature
1-7 What happens to reference assignment
1-8 forced division
1-9 Weird behavior when referencing arrays
1-10 Strange phenomenon when looping array_all
1-11 Symbol table and scope
1-12 Implementation of static variables
1-13 constant
1-14 object
1-15 memory tiering
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notes
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![Front-end project-Shangyou [HTML/CSS/JS technology comprehensive practice]](https://img.php.cn/upload/course/000/000/068/63bfcb2974f91471.jpg)
![Zero-based front-end course [Vue advanced learning and practical application]](https://img.php.cn/upload/course/000/000/068/63bbd15353895588.jpg)
![WEB front-end tutorial [HTML5+CSS3+JS]](https://img.php.cn/upload/course/000/000/068/63ba60c8da520536.jpg)
![Apipost practical application [api, interface, automated testing, mock]](https://img.php.cn/upload/course/000/000/068/63b3c967a20f4861.jpg)
