打印在$ _POST数组中选中的复选框

Question

So, I have a couple of check boxes in my $_POST array and I want to see if they are checked or not. Then I would like to print out the ones that are checked. How would I got about doing this?

Answer 1

Usually, the way we play with checkbox is, by using arrayed name like this:

<input type="checkbox" name="check[]" value="check 1" /> check<br />
<input type="checkbox" name="check[]" value="check 2" /> check<br />
<input type="checkbox" name="check[]" value="check 3" /> check<br />

This way, we can easily determine if someone checked our checkbox by using:

if( isset( $_POST['check'] ))
{
    if( count( $_POST['check'] ) > 0 )
    {
        echo "checked value are: " . implode(", ", $_POST['check']);
    }
}

This is mainly because browser doesn't send checkbox value that doesn't checked.