Enter the world of PHP from scratch

• Chapter1 PHP basics
• 1-1 PHP overview
• 1-2 Five basic concepts
• 1-3 Advantages of PHP
• 1-4 web introduction
• 1-5 phpstudy installation access server
• 1-6 Commonly used commands
• 1-7 Internet communication principles
• 1-8 DNS resolution
• 1-9 virtical list
• 1-10 virtual directory 2
• 1-11 Review of changing virtual directories
• 1-12 Permissions exercise
• 1-13 Change default home page
• 1-14 Change port occupancy
• 1-15 php delimiter
• 1-16 Virtual host configuration
• 1-17 The difference between sites, virtual directories and virtual hosts
• 1-18 PHP is a compiled language
• 1-19 output statement
• 1-20 variable, mutable variable
• 1-21 variable passing
• 1-22 Destroy variables
• 1-23 review
• 1-24 Define constants
• 1-25 Predefined constants, magic constants
• 1-26 Data type - integer
• 1-27 Data type - floating point number
• 1-28 Data type - boolean, string
• 1-29 Data type - array
• 1-30 Data type - array subscript
• 1-31 Data types - special types
• 1-32 Data type - type conversion
• 1-33 arithmetic operators
• 1-34 comparison operators, logical operators
• 1-35 Assignment, string concatenation, error suppression, ternary operator, null merging
• 1-36 Grammar of Judgment, Judgment of Leap Year
• 1-37 Judging results.mp4
• 1-38 change color
• 1-39 review
• 1-40 Homework from the previous lecture
• 1-41 loop_for
• 1-42 Loop_while, do-while
• 1-43 Example of adding from 1 to 100
• 1-44 multi-statement expression
• 1-45 Example question double cycle
• 1-46 foreach loop
• 1-47 Jump statement
• 1-48 alternative syntax
• 1-49 function definition
• 1-50 variadic function
• 1-51 anonymous function
• 1-52 Parameter passing
• 1-53 Parameter default value
• 1-54 The number of parameters does not match
• 1-55 Parameter number constraints
• 1-56 Parameter type constraints
• 1-57 return
• 1-58 review
• 1-59 Assignment 1
• 1-60 Assignment 2
• 1-61 variable scope
• 1-62 Constants have no concept of scope
• 1-63 static variable
• 1-64 use in anonymous function
• 1-65 recursion
• 1-66 How to include files
• 1-67 Contains the path to the file
• 1-68 Error handling
• 1-69 Custom error handling
• 1-70 Folder operations
• 1-71 review
• 1-72 Write string to file
• 1-73 file_get_contents、fopen
• 1-74 Open a file for reading and appending
• 1-75 Whether the file exists, whether the file exists, delete the file, binary reading
• 1-76 Introduction to get and post
• 1-77 Server accepts data
• 1-78 $_REQUEST
• 1-79 Parameter passing
• 1-80 File domain, enctype attribute
• 1-81 $_FILES
• 1-82 File Upload
• 1-83 Optimize file names
• 1-84 Verify format
• 1-85 File upload_verification
• 1-86 File upload_upload
• 1-87 File upload_upload 2
• 1-88 review