How to post multiple <input type="checkbox" /> as array in PHP?

Question

So that in PHP I can deal with them as :

foreach($_POST['checkboxname'] as $i => $value) ... 

Answer 1

Do something like this:

<input type="checkbox" name="checkboxArray[]" /> 

Note the [] in the name.

Answer 2

Like this:

<input type="checkbox" name="checkboxname[]" /> <input type="checkbox" name="checkboxname[]" /> <input type="checkbox" name="checkboxname[]" /> <input type="checkbox" name="checkboxname[]" /> <input type="checkbox" name="checkboxname[]" /> 

Just append [] to their names.