PHP underlying code analysis video tutorial

• Chapter1 In-depth analysis of the underlying code
• 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 Weird behavior when looping through arrays
• 1-11 Symbol table and scope
• 1-12 Implementation of static variables
• 1-13 constant
• 1-14 object
• 1-15 memory tiering