如何将 HashMap 的 Arraylist 发送到 _POST？ 然后我如何剖析 PHP 中的数组？

Question

I'm writing an Android app which collects user information and ultimately stores that in mySQL. To add a new user, I'm sending _POST data to a PHP script from Android using:

Uri.Builder builder = new Uri.Builder()
       .appendQueryParameter("id",params.get("id"))
       .appendQueryParameter("name",params.get("name"))
       .appendQueryParameter("email",params.get("email"));

String query = builder.build().getEncodedQuery();

On the PHP side, I'm receiving the _POST data and inserting to mySQL using:

$id = $_POST["id"];
$name = $_POST["name"];
$email = $_POST["email"];
$query = "INSERT INTO users(id,name,email) VALUES('$id','$name','$email')"; 

Simple stuff. However, I would also like to bulk add thousands of such records in one shot.

No problem on the Java side: I have an

Arraylist<HashMap<String,String>> 

to hold these thousands of 'rows' of user data.

However, how can I pass this Arraylist of HashMaps to _POST? In turn, on the PHP side, how can I dissect the lengthy _POST data (I would imagine breaking down an array) and write to the mySQL database?

I've not found a specific example of this on SO, on the Java end or the PHP end.

Thanks to the power of 3.

Answer 1

You could try to use an interchangeable format for that, JSON for example.

Convert a Java hashmap to a JSON object through: new JSONObject(map);

Then you could decode it in PHP, either manually or through an existing function, eg json_decode() .

Is this what you are looking for?