如何在android中连接php和wamp

我想在数据库上有一些数据，我的应用程序从那里检索数据。我是初学者，我不知道如何创建我的数据库，虽然我已经编写了php脚本和java代码来获得这些结果。所以我需要你帮忙创建那个数据库。我使用WAMP，我已经创建了一个数据库。我的问题是这些调用的参数是什么:

mysql_connect("127.0.0.1","root","xxpasswordxx");

public static final String KEY_121 = "http://xx.xx.xxx.xxx/hellomysql/mysqlcon.php"; 

我读到这里我必须把10.0.0.2和我的目录在C:'wamp'www下，我的php文件存储。

编辑:添加代码

这是我的android代码:

@SuppressWarnings("null")
private void DoMain() {
    setContentView(R.layout.main);
        // Set the text and call the connect function.  
      //call the method to run the data retreival
        getServerData(KEY_121);
}
    public static final String KEY_121 ="http://10.0.2.2:8888/example.php"; //what in here??
    private String getServerData(String returnString) {
       InputStream is = null;
       String result = "";
        //the year data to send
        ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
        nameValuePairs.add(new BasicNameValuePair("year","1970"));
        //http post
        try{
                HttpClient httpclient = new DefaultHttpClient();
                HttpPost httppost = new HttpPost(KEY_121);
                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                HttpResponse response = httpclient.execute(httppost);
                HttpEntity entity = response.getEntity();
                is = entity.getContent();
        }catch(Exception e){
                Log.e("log_tag", "Error in http connection "+e.toString());
        }
        //convert response to string
        try{
                BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
                StringBuilder sb = new StringBuilder();
                String line = null;
                while ((line = reader.readLine()) != null) {
                        sb.append(line + "'n");
                }
                is.close();
                result=sb.toString();
        }catch(Exception e){
                Log.e("log_tag", "Error converting result "+e.toString());
        }
        //parse json data
        try{
                JSONArray jArray = new JSONArray(result);
                for(int i=0;i<jArray.length();i++){
                        JSONObject json_data = jArray.getJSONObject(i);
                        Log.i("log_tag","id: "+json_data.getInt("id")+
                                ", name: "+json_data.getString("name")+
                                ", sex: "+json_data.getInt("sex")+
                                ", birthyear: "+json_data.getInt("birthyear")
                        );
                        //Get an output to the screen
                        returnString += "'n't" + jArray.getJSONObject(i); 
                }
        }catch(JSONException e){
                Log.e("log_tag", "Error parsing data "+e.toString());
        }
        return returnString; 
    }    

这是我的PHP文件

<?php
  mysql_connect("127.0.0.1","root","xxpasswordxx"); //what in here??
  mysql_select_db("peopledata");
  $q=mysql_query("SELECT * FROM people WHERE birthyear>'".$_REQUEST['year']."'");
  while($e=mysql_fetch_assoc($q))
          $output[]=$e;
       print(json_encode($output));
mysql_close();

?>