A: 

yes.

If you want more information, please expand your question.

dar7yl
I am working a website, where when user clicks "add contacts", it should display a list of contacts with checkboxes behind them. And when user checks those checkboxes, there value should be entered into the database. All of the values, one by one. Actually, i am looking for a php code.
Climb
A: 

the trick is to produce an html result array, using name="array_name[]" in the checkbox tag.

a quick google search for html checkbox array php produces this top link:

http://www.plus2net.com/php_tutorial/array_checkbox.php

amongst many more that you may peruse at your leisure.

dar7yl