PHP无法识别复选框输入数组

Question

I have a form that has checkboxes like these:

<input type='checkbox' name='yourgame[]' value='soccer' /> Soccer<br>
<input type='checkbox' name='yourgame[]' value='tennis' /> Tennis<br>
<input type='checkbox' name='yourgame[]' value='basketball' /> Basketball<br>

In the php script, we get the values:

$yourgame = $_POST['yourgame'];

And there is validation:

if (empty($yourgame))
echo "Tick at least one Game.";

We keep getting the error message "Tick at least one Game." despite ticking several boxes. It seems the $yourgame[] array is not recognized.

I've also tried $yourgame = (array)$_POST['yourgame']; no success.

Answer 1

try this

if (isset($_POST['submit'])) {
    $checkedCandidates = 0;
    $values = $_POST['yourgame'];
    $checkedCandidates = count($values);

    if ($checkedCandidates < 1) {
        echo 'Tick at least one Game.';
    } else {
        echo 'Checked';
    }
}