Use PHP to add, delete, modify, and query (pure code to be improved) to the database, and add, delete, and php tutorials

Use PHP to add, delete, modify, and query (pure code, to be improved) to the database, and add, delete, and delete php. Use PHP to add, delete, modify, and query (pure code, to be improved) to the database, and add, delete, and modify php? Php $ conmysql_connect (localhost: 3306, root,); if (! $ Con) {die (Couldnotcon uses PHP to add, delete, modify, and query data to the database (pure code, to be improved), and adds and deletes data in php

Username Password "; While ($ row = mysql_fetch_array ($ result) {echo""; Echo"". $ Row ['username'].""; Echo"". $ Row ['password'].""; Echo"";} Echo""; Mysql_close ($ con);?>Obtain all user information from the server (SQL SELECT statement) and appear in a table

Delete all user information delete. php

Register a new user insert. php

Update. php

FORM

Insert:

Username:
Password:

Delete

Username:
Are you sure?

Update

Username:
You want to change your password:

Operate.html

Merge (pure code, to be improved), add and delete php? Php $ con = mysql_connect ("localhost: 3306", "root", ""); if (! $ Con) {die ('could not con...