Given a "university" database that has one table "students" as shown in the following diagram, also

given the following HTML form

Write a PHP script to do the following when the client clicks on this button:

a$)$ Connect to the database.

b$)$ Validate the input of gpa $($should be a positive number and less than $4).$

c$)$ Insert the entered data into the "students" table.

d$)$ Display all students with gpa $>3\mathrm{.}1$ in CS department $($whose deptId $=10).$