如何解决尝试获取非对象的属性？

Question

$data = file_get_contents("php://input");
if (isset($data)) {
    $request = json_decode($data);
    $un = $request->username;
    $mob = $request->mobile;
    $em = $request->email;
}

Answer 1

The reason this error is happening is because the HTTP request does not contain a JSON object with with your expected properties. For example, if you are getting the error when grabbing the username, it means that your JSON object does not have a username property.