Failed to save information in JSON format

Question

Failed to save information in JSON format

I'm currently facing an issue with JSON while trying to implement a register and login feature. The data fails to be stored as intended.

Here is the JSON response I am receiving in the log:

02-24 08:24:47.878: E/JSON(2017): {"tag":"register","success":0,"error":1,"error_msg":"Error occured in Registartion"}

This snippet shows my PHP code for storing the data:

<?php
if (isset($_POST['tag']) && $_POST['tag'] != '') {
// get tag
$tag = $_POST['tag'];

// include db handler
require_once 'DB_Function.php';
$db = new DB_Functions();

// response Array
$response = array("tag" => $tag, "success" => 0, "error" => 0);

// check for tag type
if ($tag == 'login') {
    ...
} else if ($tag == 'register') {
    ...
} else {
    echo "Invalid Request";
}
} else {
echo "Access Denied";
}
?>

The userfunction class is shared between the login and registration functions:

public class UserFunctions {

private JSONParser jsonParser;
...
}

php android json

Answer 1

Answer №1

If you're encountering issues, it might be because you are passing parameters through the GET method but attempting to parse POST content in your PHP script when it's empty. Consider using

jsonParser.makeHttpRequest(registerURL, "POST", params);

instead of

jsonParser.makeHttpRequest(registerURL, "GET", params);

Answer 2

If you're encountering issues, it might be because you are passing parameters through the GET method but attempting to parse POST content in your PHP script when it's empty. Consider using

jsonParser.makeHttpRequest(registerURL, "POST", params);

instead of

jsonParser.makeHttpRequest(registerURL, "GET", params);

Answer 3

Answer №2

<?php

class UserDatabase {

private $database;

//put your code here
// constructor
function __construct() {
    require_once 'DB_Connection.php';
    // connecting to database
    $this->database = new DB_Connection();
    $this->database->connect();
}

// destructor
function __destruct() {

}

/**
 * Storing new user
 * returns user details
 */
public function createUser($username, $email, $password) {
    $userid = uniqid('', true);
    $hash = $this->hashPassword($password);
    $encrypted_password = $hash["encrypted"]; // encrypted password
    $salt = $hash["salt"]; // salt
    $result = mysql_query("INSERT INTO users(user_id, username, email, encrypted_password, salt, created_at) VALUES('$userid', '$username', '$email', '$encrypted_password', '$salt', NOW())");
    // check for successful store
    if ($result) {
        // get user details 
        $uid = mysql_insert_id(); // last inserted id
        $result = mysql_query("SELECT * FROM users WHERE uid = $uid");
        // return user details
        return mysql_fetch_array($result);
    } else {
        return false;
    }
}

/**
 * Get user by email and password
 */
public function getUserByEmailAndPassword($email, $password) {
    $result = mysql_query("SELECT * FROM users WHERE email = '$email'") or die(mysql_error());
    // check for result 
    $no_of_rows = mysql_num_rows($result);
    if ($no_of_rows > 0) {
        $result = mysql_fetch_array($result);
        $salt = $result['salt'];
        $encrypted_password = $result['encrypted_password'];
        $hash = $this->checkPasswordHash($salt, $password);
        // check for password equality
        if ($encrypted_password == $hash) {
            // user authentication details are correct
            return $result;
        }
    } else {
        // user not found
        return false;
    }
}

/**
 * Check user is existed or not
 */
public function isUserRegistered($email) {
    $result = mysql_query("SELECT email from users WHERE email = '$email'");
    $no_of_rows = mysql_num_rows($result);
    if ($no_of_rows > 0) {
        // user existed 
        return true;
    } else {
        // user not existed
        return false;
    }
}

/**
 * Encrypting password
 * @param password
 * returns salt and encrypted password
 */
public function hashPassword($password) {

    $salt = sha1(rand());
    $salt = substr($salt, 0, 10);
    $encrypted = base64_encode(sha1($password . $salt, true) . $salt);
    $hash = array("salt" => $salt, "encrypted" => $encrypted);
    return $hash;
}

/**
 * Decrypting password
 * @param salt, password
 * returns hash string
 */
public function checkPasswordHash($salt, $password) {

    $hash = base64_encode(sha1($password . $salt, true) . $salt);

    return $hash;
}

}

?>

Answer 4

<?php

class UserDatabase {

private $database;

//put your code here
// constructor
function __construct() {
    require_once 'DB_Connection.php';
    // connecting to database
    $this->database = new DB_Connection();
    $this->database->connect();
}

// destructor
function __destruct() {

}

/**
 * Storing new user
 * returns user details
 */
public function createUser($username, $email, $password) {
    $userid = uniqid('', true);
    $hash = $this->hashPassword($password);
    $encrypted_password = $hash["encrypted"]; // encrypted password
    $salt = $hash["salt"]; // salt
    $result = mysql_query("INSERT INTO users(user_id, username, email, encrypted_password, salt, created_at) VALUES('$userid', '$username', '$email', '$encrypted_password', '$salt', NOW())");
    // check for successful store
    if ($result) {
        // get user details 
        $uid = mysql_insert_id(); // last inserted id
        $result = mysql_query("SELECT * FROM users WHERE uid = $uid");
        // return user details
        return mysql_fetch_array($result);
    } else {
        return false;
    }
}

/**
 * Get user by email and password
 */
public function getUserByEmailAndPassword($email, $password) {
    $result = mysql_query("SELECT * FROM users WHERE email = '$email'") or die(mysql_error());
    // check for result 
    $no_of_rows = mysql_num_rows($result);
    if ($no_of_rows > 0) {
        $result = mysql_fetch_array($result);
        $salt = $result['salt'];
        $encrypted_password = $result['encrypted_password'];
        $hash = $this->checkPasswordHash($salt, $password);
        // check for password equality
        if ($encrypted_password == $hash) {
            // user authentication details are correct
            return $result;
        }
    } else {
        // user not found
        return false;
    }
}

/**
 * Check user is existed or not
 */
public function isUserRegistered($email) {
    $result = mysql_query("SELECT email from users WHERE email = '$email'");
    $no_of_rows = mysql_num_rows($result);
    if ($no_of_rows > 0) {
        // user existed 
        return true;
    } else {
        // user not existed
        return false;
    }
}

/**
 * Encrypting password
 * @param password
 * returns salt and encrypted password
 */
public function hashPassword($password) {

    $salt = sha1(rand());
    $salt = substr($salt, 0, 10);
    $encrypted = base64_encode(sha1($password . $salt, true) . $salt);
    $hash = array("salt" => $salt, "encrypted" => $encrypted);
    return $hash;
}

/**
 * Decrypting password
 * @param salt, password
 * returns hash string
 */
public function checkPasswordHash($salt, $password) {

    $hash = base64_encode(sha1($password . $salt, true) . $salt);

    return $hash;
}

}

?>

Failed to save information in JSON format

Answer №1

Answer №2

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