php - 解码 php 不工作

Question

我想将一个 json 对象发布到 php。

var user = {username:"test", password:"test", name:"test",  
email:"test@hotmail.com"};
var str_json = JSON.stringify(user);
$.ajax({
        url: '/register_API.php',
        type: 'post',
        contentType: "application/json; charset=utf-8",
        success: function (data) {
           console.log('success');
        },
        data: user
    });
}

在 php 中我想将它插入到 mysql 中:

$data = file_get_contents('php://input');
$json = json_decode($data,true);

$username = $json['username'];
$password = $json["password"];
$email = $json['email'];

$insertSql = "INSERT INTO users (username, password, email)
VALUES ('$username', '$password', '$email');";

$data 字符串包含:username=test&password=test&name=test&email=test%40hotmail.com，但我无法通过解码获取变量...

提前致谢!

Answer 1

将data: user 改为data: str_json 然后

更改 $data = file_get_contents('php://input');

到 $data = $_POST['data']