PHP检查是否未选中动态复选框

Question

I have a form where a list is populated from a MySQL database and checkboxes are assigned for each one using the $index method.

When the form is posted, I then cycle through the checkboxes using the following

foreach ($_POST['check'] as $index => $value) {
    if (($_POST['check'][$index] == '1')) {

How could I check if none of the checkboxes are checked?

Answer 1

Checkboxes are not sent if not checked.

So, you can use if (!isset($_POST['check'])) {}