PDO Исключения в PHP

Question

Хорошо, у меня есть вопрос, связанный с $ _POST. Я пытаюсь отправить несколько значений из приложения Android (используя HTTPclient), который я разрабатываю, но PHP отправляет сообщение из исключения обратно. Я пытаюсь выяснить, почему это происходит и как это исправить:

логина

<?php 

//load and connect to MySQL database stuff 
require("configmob.php"); 

if (!empty($_POST)) { 
//gets user's info based off of a username. 
$query = " 
     SELECT 
      myusername, 
      mypassword 
     FROM Customer 
     WHERE 
      myusername = :myusername 
      mypassword = :mypassword"; 

$query_params = array(
    ':myusername' => $_POST['username'], 
':mypassword' => $_POST['password'] 
); 

try { 
    $stmt = $db->prepare($query); 
    $result = $stmt->execute($query_params); 
} 
catch (PDOException $ex) { 
    // For testing, you could use a die and message. 
    //die("Failed to run query: " . $ex->getMessage()); 

    //or just use this use this one to product JSON data: 
    $response["success"] = 0; 
    $response["message"] = "Database Error1. Please Try Again!"; 
    die(json_encode($response)); 

} 

//This will be the variable to determine whether or not the user's information is correct. 
//we initialize it as false. 
$validated_info = false; 

//fetching all the rows from the query 
$row = $stmt->fetch(); 
if ($row) { 
    //if we encrypted the password, we would unencrypt it here, but in our case we just 
    //compare the two passwords 
    if ($_POST['password'] === $row['password']) { 
     $login_ok = true; 
    } 
} 

// If the user logged in successfully, then we send them to the private members-only page 
// Otherwise, we display a login failed message and show the login form again 
if ($login_ok) { 
    $response["success"] = 1; 
    $response["message"] = "Login successful!"; 
    die(json_encode($response)); 
} else { 
    $response["success"] = 0; 
    $response["message"] = "Invalid Credentials!"; 
    die(json_encode($response)); 
} 

} 

?> 

конфигурация

<?php 

// These variables define the connection information for your MySQL database 
$host = "mysql17.000webhost.com"; 
$dbname = "a4335408_data1";  
$username = "******"; 
$password = "******"; 




// UTF-8 is a character encoding scheme that allows you to conveniently store 
// a wide varienty of special characters, like ¢ or €, in your database. 
// By passing the following $options array to the database connection code we 
// are telling the MySQL server that we want to communicate with it using UTF-8 
// See Wikipedia for more information on UTF-8: 
// http://en.wikipedia.org/wiki/UTF-8 
$options = array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8'); 

// A try/catch statement is a common method of error handling in object oriented code. 
// First, PHP executes the code within the try block. If at any time it encounters an 
// error while executing that code, it stops immediately and jumps down to the 
// catch block. For more detailed information on exceptions and try/catch blocks: 
// http://us2.php.net/manual/en/language.exceptions.php 
try 
{ 
    // This statement opens a connection to your database using the PDO library 
    // PDO is designed to provide a flexible interface between PHP and many 
    // different types of database servers. For more information on PDO: 
    // http://us2.php.net/manual/en/class.pdo.php 
    $db = new PDO("mysql:host={$host};dbname={$dbname};charset=utf8", $username, $password, $options); 
} 
catch(PDOException $ex) 
{ 
    // If an error occurs while opening a connection to your database, it will 
    // be trapped here. The script will output an error and stop executing. 
    // Note: On a production website, you should not output $ex->getMessage(). 
    // It may provide an attacker with helpful information about your code 
    // (like your database username and password). 
    die("Failed to connect to the database: " . $ex->getMessage()); 
} 

// This statement configures PDO to throw an exception when it encounters 
// an error. This allows us to use try/catch blocks to trap database errors. 
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 

// This statement configures PDO to return database rows from your database using an  
associative 
// array. This means the array will have string indexes, where the string value 
// represents the name of the column in your database. 
$db->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC); 

// This block of code is used to undo magic quotes. Magic quotes are a terrible 
// feature that was removed from PHP as of PHP 5.4. However, older installations 
// of PHP may still have magic quotes enabled and this code is necessary to 
// prevent them from causing problems. For more information on magic quotes: 
// http://php.net/manual/en/security.magicquotes.php 
if(function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc()) 
{ 
    function undo_magic_quotes_gpc(&$array) 
    { 
     foreach($array as &$value) 
     { 
      if(is_array($value)) 
      { 
       undo_magic_quotes_gpc($value); 
      } 
      else 
      { 
       $value = stripslashes($value); 
      } 
     } 
    } 

    undo_magic_quotes_gpc($_POST); 
    undo_magic_quotes_gpc($_GET); 
    undo_magic_quotes_gpc($_COOKIE); 
} 

// This tells the web browser that your content is encoded using UTF-8 
// and that it should submit content back to you using UTF-8 
header('Content-Type: text/html; charset=utf-8'); 

// This initializes a session. Sessions are used to store information about 
// a visitor from one web page visit to the next. Unlike a cookie, the information is 
// stored on the server-side and cannot be modified by the visitor. However, 
// note that in most cases sessions do still use cookies and require the visitor 
// to have cookies enabled. For more information about sessions: 
// http://us.php.net/manual/en/book.session.php 
session_start(); 

// Note that it is a good practice to NOT end your PHP files with a closing PHP tag. 
// This prevents trailing newlines on the file from being included in your output, 
// which can cause problems with redirecting users. 



?> 

Спасибо, и я надеюсь, что этот вопрос не является слишком трудным или anyhting.

Answer 1

Попробуйте заменить сообщение Статическая ошибка с сообщением исключения, чтобы увидеть, что происходит не так

Изменение:

$response["message"] = "Database Error1. Please Try Again!"; 

к:

$response["message"] = $ex->getMessage(); 

Answer 2

условия в WHERE заявлении должны быть разделены AND ключевое слово