Way to send multiple values for column to MySQL?

you can do it by using the array format. First you have to take all the selected values to form an array , you can implement this by giving the checkbox name as an array . By doing this you will get the array of selected check boxes in the name variable. You can also encode the array using Json_encode() before sending to database.

<input type="checkbox" name="checkbox[]" value="One">1<br>