+http://blog.chapagain.com.np/very-simple-add-edit-delete-view-in-php-mysql/
+https://github.com/chapagain/crud-php-simple
+https://www.sourcecodester.com/php/11546/easy-and-simple-add-edit-delete-mysql-table-rows-using-phpmysqli.html
+https://www.taniarascia.com/create-a-simple-crud-database-app-php-update-delete/

connect mysql
+https://www.w3schools.com/php/func_mysqli_connect.asp
+https://www.w3schools.com/php/php_mysql_connect.asp
+https://www.w3schools.com/php/php_mysql_update.asp
+https://www.w3schools.com/php/php_mysql_delete.asp