php – 检查wheter提交值是否在数组中？

我最近读过一篇文章说,你永远不应该信任用户发送数据.

所以,假设我有以下表单输入：

<label for="input1">Answer 1</label>
<input type="radio" name="question1" value="answer1" id="input1" />
<label for="input2">Answer 2</label>
<input type="radio" name="question1" value="answer2" id="input2" />
<label for="input3">Answer 3</label>
<input type="radio" name="question1" value="answer3" id="input3" />

是否可以检查已发布的答案是否在答案中的aray内：

$question1_answers = array("answer1", "answer2", "answer3");
$answer1 = $_POST['question1'];
if ( in_array($answer1, $question1_answers) ) {
    echo "OK!";
} else {
    echo "Please select proper answer!";
}

或者也许上面的代码是不必要的,我应该简单地阅读$_POST [‘question1’],这就够了吗？

解决方法:

Is it okay to check whether posted answer is inside aray with answers:

是!这是验证像这样的单选按钮值的非常好的做法.您阅读的文章是正确的,您不应盲目信任用户提供的数据.

标签：php,html-form
来源： https://codeday.me/bug/20190729/1570921.html