计数器不会上升。如您所见,如果PHP代码收到A值,则计数器应该上升。
html:
<body>
<div>
<div>
<h1>Login</h1>
<form method="post" action="quiz.php">
<input name="A" value="A" type="radio">
<label for="A">A</label>
<input name="A" value="B" type="radio">
<label for="A">B</label>
<input name="A" value="C" type="radio">
<label for="A">C</label>
<button id="submitbutton"
type="submit">Antworten</button>
</form>
</div>
</div>
</body>
<?php
if(!empty($_POST)) {
if(!empty($_POST['A'])) {
$counter = $counter + 1;
}
}
echo $counter;
?>
有时我会收到HTTP错误412