PHP PDO PDOStatement-> execute（）

Question

我在做什麼錯？我不斷收到這樣的信息：在這裏

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[3D000]: Invalid catalog name: 1046 No database selected' in C:\xampp\htdocs\eCommerce_arabic\admin\index.php:16 Stack trace: #0 C:\xampp\htdocs\eCommerce_arabic\admin\index.php(16): PDOStatement->execute(Array) #1 {main} thrown in C:\xampp\htdocs\eCommerce_arabic\admin\index.php on line 16

<?php 
$dsn = "mysql:host-localhost;dbname=shop"; 
$user = 'root'; 
$pass =''; 
$option = array(
    PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8', 
); 
try { 
    $con = new PDO($dsn, $user, $pass, $option); 

    $con -> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 


} 
catch (PDOException $e){ 
    echo 'failed to connect'. $e->getMessage(); 

} 

?> 
<?php 
//check if user coming from HTTP Post request 
if($_SERVER['REQUEST_METHOD'] == 'POST'){ 
    $username = $_POST['user']; 
    $password = $_POST['password']; 
    $hashedPass = sha1($password); 

$stmt = $con->prepare("SELECT username, password FROM users WHERE username=? AND password=?"); 
$stmt->execute(array($username, $password)); 

} 

?> 

Answer 1

是確保它那正常工作的另一種方法。

define("SQLHOST", "127.0.0.1"); 
define("SQLUSER", "root"); 
define("SQLPASS", ""); 
define("SQLSGBD", "shop"); 
try { 
    $con = new PDO('mysql:host=' . SQLHOST . ';dbname=' . SQLSGBD . ';charset=UTF8', SQLUSER, SQLPASS); 
    $con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 
} catch (PDOException $e) { 
    var_dump('Connection failed: ' . $e->getMessage()); 
} 
$stmt = $con->prepare("SELECT username, password FROM users WHERE username=? AND password=?"); 

if (isset($_SERVER['REQUEST_METHOD'])) { 
    if ($_SERVER['REQUEST_METHOD'] === "POST") { 
     $stmt->bindParam(1, $_POST['user'], PDO::PARAM_STR); 
     $stmt->bindParam(1, $_POST['password'], PDO::PARAM_STR); 
     $stmt->execute(); 
     $obj = $stmt->fetchall(PDO::FETCH_ASSOC); 
    } 
} 

Answer 2

What am I doing wrong? I keep getting this message:

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[3D000]: Invalid catalog name: 1046 No database selected'

用於連接的語法不正確。請參閱PDO_MYSQL DSN的PHP文檔。

Example #1 Setting the connection character set to UTF-8 prior to PHP 5.3.6

<?php 
$dsn = 'mysql:host=localhost;dbname=testdb'; 

更新分配值$ DSN行 - 中主機和值（即本地主機）之間的分隔符應該是一個等號（即=），而不是一個連字符（即-）。

這條線：

$dsn = "mysql:host-localhost;dbname=shop"; 
//    ^

變爲：

$dsn = "mysql:host=localhost;dbname=shop"; 
//    ^