PDO small project practice

• Chapter1 Understanding and Application of PDO Objects
• 1-1 PDO object knowledge
• 1-2 PDO object initialization
• 1-3 PDO object application
• Chapter2 PDO security processing and transaction processing
• 2-1 Course Introduction
• 2-2 PDO exception handling
• 2-3 PDO preprocessing
• 2-4 PDO transaction processing
• Chapter3 PDO project example (student information management system)
• 3-1 System introduction and construction
• 3-2 Add and view system functions
• 3-3 System function deletion and modification