Sometimes while designing any form, we required to give multiple options to user. At that time our mind immediately say, put checkboxes and give multiple selections to user.
But while working with any server side scripting, our form and all its controls are submitted. So we must have to give proper name to each control.
Now if we are using multiple checkboxes to get multiple selections of same type of data, then it is difficult to give different names to each and every checkbox control.
At that time we can make group of checkboxes as a checkbox array, where all the checkboxes are related.
In which we just required to give common name to each checkbox with rectangular brackets .
So now each checkbox is an element of checkbox array.
For example: Here we are making checkbox array to select multiple colors.
<input type="checkbox" name="colors" value="Red" /> Red <input type="checkbox" name="colors" value="Green" /> Green <input type="checkbox" name="colors" value="Blue" /> Blue
Hope this will help you.