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Talk about PHP Season 2 in detail

• Chapter1 A closer look at arrays (Part 1)
• 1-1 System predefined variables
• 1-2 The for loop traverses the data in the array and outputs it to the table
• 1-3 The foreach loop traverses the data in the array and outputs it to the table
• 1-4 The difference between for loop and foreach loop
• 1-5 Search criteria added
• 1-6 Implement the function of sorting by age
• 1-7 Search by gender
• 1-8 Paging implementation
• 1-9 search maintain
• Chapter2 A closer look at arrays (Part 2)
• 2-1 Perpetual Calendar Homework Review
• 2-2 Usage of goto statement
• 2-3 The concept of array
• 2-4 Use language constructs to declare arrays
• 2-5 Declare an array using the specified syntax
• 2-6 Declare an array by adding array elements
• 2-7 Array related operations
• 2-8 Delete and clear arrays
• 2-9 for loop traverses array
• 2-10 Bubble Sort
• 2-11 foreach method to traverse an array
• 2-12 System predefined variable GET_POST
• 2-13 Work requirements
• Chapter3 Detailed explanation of functions (Part 1)
• 3-1 Understanding functions
• 3-2 How to customize functions
• 3-3 The function of return statement
• 3-4 function parameters
• 3-5 function variable scope
• 3-6 static variable
• 3-7 Passing parameters by reference
• 3-8 Work requirements
• Chapter4 Detailed explanation of functions (Part 2)
• 4-1 homework review
• 4-2 Custom bubble sort function
• 4-3 variable function
• 4-4 Callback
• 4-5 internal function
• 4-6 recursive function
• 4-7 anonymous function
• 4-8 closure function
• 4-9 Anonymous callback
• 4-10 variable length argument list
• 4-11 System function manual learning method
• 4-12 file inclusion
• 4-13 Work requirements
• Chapter5 Describe the function in detail (Part 2)
• 5-1 About homework explanation 1
• 5-2 About homework explanation 2
• 5-3 mathematical functions
• 5-4 String functions 1
• 5-5 String function 2
• 5-6 Customs clearance requirements
• Chapter6 Describe the time function in detail (Part 1)
• 6-1 Homework explanation
• 6-2 Learning function of time
• 6-3 Set time zone 1
• 6-4 Set time zone 2
• 6-5 timestamp function
• 6-6 time function
• 6-7 Recognize and block errors
• 6-8 Error log output
• 6-9 Custom error file output
• 6-10 Work requirements
• Chapter7 Describe the time function in detail (Part 2)
• 7-1 Simple implementation of perpetual calendar
• 7-2 Perpetual calendar realizes year and month changes
• 7-3 Final version_perpetual calendar
• 7-4 Work requirements