Question

I have a text field in a contact form, users have to reply to a simple question (I know is not the best way to approach spam, we already have other things captcha, honeypots and more).

The question is that I just want to give the user the option of 2 answers.

    if ($_POST['answer'] == "banana") {
        // we're OK, do something
    } else {
       alert("YOU FAILED!!!");
    }

I want the text field to pass with more than 1 word, let's say "foo" and "baz"

How do I solve this problem?

Answer 1

@tim（间接）建议使用逻辑运算符。使用的解决方案如下所示：

if ($_POST['answer'] == 'banana' || $_POST['answer'] == 'platano') {

如果需要检查的条件彼此不相关（例如，如果需要检查来自两个不同表单字段的值），这就是方法。但是，根据您的情况，建议您检查提供的值是否在可接受的值列表中：

if (in_array($_POST['answer'], ['banana', 'platano'])) {

在二值情况下，这是稍微短一点的代码（并且，我想，它更具可读性，因此更易于维护），但是如果发现需要添加第三和第四个选项，则代码会变得越来越好。

Input text value for specific words

1 个答案: