How to use databases with php

Answer 1

information is collected via forms and using php you insert the data into the database and also retrieve the data. think of an online shopping cart. you selling products. you add your products in the admin section and from the front end using html to format the layout of the page and php to retrieve the data from the database

Answer 2

link that database to you Web application via php mysqli or pdo and retrieve or manipulate all data as required