php程序访问mysql数据库，并把结果集打包成json格式-php to access mysql database, and the result set packaged into json format

图书管理系统 对原软件包“依样”打包，未做过任何改动，但不保证所提供软件或程序的完整性和安全性。 -Library management system on the original package " as is" packaged, have not done any changes, but does not guarantee that the software or program integrity and security.