如何使用php将一行中的多个值添加到mysql中

I am HR and new for Developing. I started doing program for HR management using PHP and Mysql. I want to add the names of atleast 5 employees in a single row of a column. I use bootstrap to get multiple values in a single field. But when I try to insert the values, only the last value is inserted. I am HR and new for Developing. I started doing