Comprehensive Interpretation of PHP Interview

php interview study points

　　   1, PHP Basics

• • • Reference variable
    • Constants and Data Types
    • And process control operators
    • Custom functions and internal functions
    • Regular Expressions
    • File and directory handling
    • Session Control
    • Object-Oriented
    • Network protocol
    • Development of environment-related test sites　　　　　

　　　2, JavaScript, jQuery, Ajax Basics

　　　3, Linux Basics

　　　4, the foundation and optimization of MySQL database

• • • MySQL Basics
    • How to create high-performance MySQL indexes
    • MySQL SQL statement preparation and optimization
    • MySQL's high scalability and high-availability and safety

　　　5, programming problem

　　　6, PHP framework basics

　　　7, arithmetic, logical thinking

• • • Common Data Structure
    • Algorithm works
    • time complexity
    • Space complexity
    • Other logic algorithm
    • PHP built-in functions to achieve

　　　8, high concurrency solutions

• • • How to understand the high concurrency PV UV QPS
    • QPS optimize the timing optimization stage
    • Optimization Case
      1. Hotlink Protection
      2. Reduce HTTP requests
      3. Browser cache
      4. CDN
      5. Database Cache (Memcache / Nosql)
      6. MySQL separate read and write
      7. Partition and sub-library sub-table
      8. LVS load balancing