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我有两个php脚本。第一个涉及通过Android应用程序注册用户。这里是：获取注册用户的信息
<?php
session_start();
require "init.php";
header('Content-type: application/json');
$id = $_POST['id'];
$email = $_POST['email'];
$user_name = $_POST['user_name'];
$user_pass = $_POST['user_pass'];
$passwordEncrypted = sha1($user_pass);
$confirmPass = $_POST['confirm_pass'];
$confPasswordEncrypted = sha1($confirmPass);
$msg = "Congratulations. You are now registered to the most amazing app ever!";
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$don = array('result' => "fail", "message" => "Please enter a valid email");
}
if ($email && $user_name && $user_pass && $confirmPass && filter_var($email, FILTER_VALIDATE_EMAIL)) {
$sql_query = "select * from user_info WHERE email ='" . mysqli_real_escape_string($con, $email) . "' or user_name
='" . mysqli_real_escape_string($con, $user_name) . "'";
$result = mysqli_query($con, $sql_query);
$results = mysqli_num_rows($result);
if ($results) {
$don = array('result' => "fail", "message" => "Email or username exists.");
} else {
$sql_query = "insert into user_info values('$id','$email','$user_name','$passwordEncrypted','$confPasswordEncrypted');";
if (mysqli_query($con, $sql_query)) {
$_SESSION['id'] = mysqli_insert_id($con);
$id = mysqli_insert_id($con);
$don = array('result' => "success", "message" => $id);
mail($email, "Well done. You are registered to my sample app!", $msg);
}
}
} else if (!$email) {
$don = array('result' => "fail", "message" => "Please enter a valid email");
} else if (!$user_name) {
$don = array('result' => "fail", "message" => "Please enter your username");
} else if (!$user_pass) {
$don = array('result' => "fail", "message" => "Please enter a password");
} else if (!confirmPass) {
$don = array('result' => "fail", "message" => "Please confirm your password");
}
echo json_encode($don);
?>
成功注册后，用户在他的android手机获取Toast消息，显示他的ID。我会稍后改变这个消息，说成功注册..现在我有另一个PHP脚本获取用户信息。
<?php
include("init.php");
$get_posts = "SELECT * FROM user_info where id='" . $_SESSION['id'] . "' LIMIT 1";
error_reporting(E_ALL);
ini_set("display_errors", 1);
$run_posts = mysqli_query($con, $get_posts);
$posts_array = array();
while ($posts_row = mysqli_fetch_array($run_posts)) {
$row_array['id'] = $posts_row['id'];
$row_array['user_name'] = $posts_row['user_name'];
array_push($posts_array, $row_array);
}
$string = json_encode($posts_array, JSON_UNESCAPED_UNICODE);
echo $string;
?>
但是，该脚本返回一个空数组。请注意，我已经注册了一个用户，他的详细信息显示在user_info表中。
[]
这是怎么发生的？
编辑。
这是我的Android注册码。
public class RegisterFragment extends Fragment {
private SessionManager session;
EditText etEmail, etUsername, etPassword,etConfirmPassword;
String email, userName, userPass,confirmPassword;
Button registerButton;
SqliteHandler sql;
public RegisterFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_register, container, false);
Toolbar myToolbar = (Toolbar) v.findViewById(R.id.toolbar);
((AppCompatActivity)getActivity()).setSupportActionBar(myToolbar);
setHasOptionsMenu(true);
etEmail = (EditText)v.findViewById(R.id.name);
etUsername = (EditText)v.findViewById(R.id.user_name);
etPassword = (EditText)v.findViewById(R.id.user_pass);
etConfirmPassword = (EditText)v.findViewById(R.id.confirm_pass);
registerButton = (Button)v.findViewById(R.id.registerBtn);
session = new SessionManager(getActivity());
if (session.isLoggedIn()) {
// User ites already logged in. Take him to main activity
Intent intent = new Intent(getActivity(), Welcome.class);
startActivity(intent);
}
registerButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
email = etEmail.getText().toString();
userName = etUsername.getText().toString();
userPass = etPassword.getText().toString();
confirmPassword = etConfirmPassword.getText().toString();
if(userPass.equals(confirmPassword)){
registerUser(email, userName, userPass, confirmPassword);
}else{
Toast.makeText(getActivity(),"Passwords don't match",Toast.LENGTH_SHORT).show();
}
}
});
return v;
}
private void registerUser(final String email, final String userName,
final String password,final String confirmPassword) {
String tag_string_req = "req_register";
StringRequest strReq = new StringRequest(Request.Method.POST,
Config.URL_REGISTER, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d("Response", "Register Response: " + response.toString());
try {
JSONObject jsonObject = new JSONObject(response);
if (jsonObject.getString("result").equals("success")) {
//Toast.makeText(getActivity(),jsonObject.getString("message"), Toast.LENGTH_LONG).show();
String id = jsonObject.getString("message");
Log.d("Theo", id);
//$don = array('result' =>"success","message"=>mysqli_insert_id($con));
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(getActivity());
SharedPreferences.Editor editor = settings.edit();
editor.putString("id", String.valueOf(id));
editor.putString("email", email);
editor.putString("user_name", userName);
editor.putString("user_pass", password);
editor.putString("confirm_pass", confirmPassword);
editor.commit();
}
else if (jsonObject.getString("result").equals("fail")) {
Toast.makeText(getActivity(),jsonObject.getString("message"), Toast.LENGTH_LONG).show();
}
}catch(JSONException e){
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e("Error", "Registration Error: " + error.getMessage());
Toast.makeText(getActivity(),
error.getMessage(), Toast.LENGTH_LONG).show();
}
}) {
@Override
protected Map<String, String> getParams() {
// Posting params to register url
Map<String, String> params = new HashMap<String, String>();
params.put("id", "");
params.put("email", email);
params.put("user_name", userName);
params.put("user_pass", password);
params.put("confirm_pass", confirmPassword);
return params;
}
};
// Adding request to request queue
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
}
你可以将数组中的值存储在数组中，而不需要像这样推送元素$ posts_array ['id'] = $ posts_row ['id'];等等。如果在循环之后打印$ posts_array，您将得到结果 –
在第二个脚本中忘记'session_start（）;'！ – Saty
我添加了session_start（）;但我仍然没有得到什么！ – Theo