Shulou(Shulou.com)06/01 Report--

In PHP process-oriented, we can achieve database operations through encapsulated functions, so in process-oriented, we can also achieve database operations through classes, the whole process and process-oriented ideas are roughly the same, but the amount of code is more, and it is slightly difficult to implement. Ten functions were performed. Define member attributes first, then member methods. Divided into a total of connection database config file, specific implementation of the database operation class file, test code. All the code passed the test, and the specific test results are not attached due to space problems.

Specific implementation function:

1. Connect to the database;

2. Insert data;

3. Update the data;

4. Delete data;

5. Modification of data;

6. Find the maximum value;

7. Find the minimum value;

8) average;

9. Summation;

10. Specify query;

The code is divided into three parts:

config file: mainly used to connect databases

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