在 jQuery ajax 数据中发送一个布尔值

2022-01-19 00:00:00 json boolean jquery php ajax

我在 Ajax 调用中发送一些数据.其中一个值是设置为 FALSE 的布尔值.在 Ajax 调用的 PHP 脚本中，它总是被评估为 TRUE.有任何想法吗?

I'm sending some data in an Ajax call. One of the values is a boolean set to FALSE. It is always evaluated as TRUE in the PHP script called by the Ajax. Any ideas? 

$.ajax({
    type: "POST",
    data: {photo_id: photo_id, 
           vote: 1, 
           undo_vote: false},   // This is the important boolean!
    url: "../../build/ajaxes/vote.php",
    success: function(data){
        console.log(data);
    }
});

在上面Ajax中调用的脚本vote.php中，我检查了布尔值:

In vote.php, the script that is called in the above Ajax, I check the boolean value:

if ($_POST['undo_vote'] == true) {
    Photo::undo_vote($_POST['photo_id']);
} else {
    Photo::vote($_POST['photo_id'], $_POST['vote']);
}

但总是满足 $_POST['undo_vote'] == true 条件.

推荐答案

帖子只是文本，而文本在 php 中将评估为 true.一个快速的解决方法是发送一个零而不是错误.你也可以在 PHP 中为你的 true 加上引号.

A post is just text, and text will evaluate as true in php. A quick fix would be to send a zero instead of false. You could also put quotes around your true in PHP. 

if ($_POST['undo_vote'] == "true") {
    Photo::undo_vote($_POST['photo_id']);
} else {
    Photo::vote($_POST['photo_id'], $_POST['vote']);
}

然后你可以传入真/假文本.如果那是你喜欢的.

Then you can pass in true/false text. If that's what you prefer.

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