In step 2 we're repeating quite a lot of items on all individual pages. We can place them in single partial files and re-use them to better organize the app structure. We'll make new files header.php and footer.php files to contain an app-wide structure. We'll add a tabular format to show the data and delete action to delete the selected record.
config.php Holds all the global variables and database connections
functions.php All the functional code | Added Table Listing and Delete Actions
header.php Global app header
footer.php Global app footer
index.php Search page with a seach form
students.php Student addition form
subjects.php subject addtition form