如何調試PHP什麼準備PDO語句沒有插入數據

Question

我

$salt = md5(mt_rand()); 
$hashed = hash_hmac('SHA256', $password, $salt); 
$stmt = self::$_dbh->prepare('INSERT INTO users (username, password, salt, display, email) VALUES (:username, :password, :salt, :display, :email)'); 
$stmt->bindParam('username', $username); 
$stmt->bindParam('password', $hashed); 
$stmt->bindParam('salt', $salt); 
$stmt->bindParam('display', $display); 
$stmt->bindParam('email', $email); 
$stmt->execute(); 
$firephp->log('Insert OK '); 
if ($stmt->rowCount() > 0) { 
    return array(
      'status' => 'OK', 
      'message' => 'Registration Successful' 
    ); 
} 
$firephp->log('Unknown ... Row count: ' . $stmt->rowCount()); 
return array(
     'status' => 'failed', 
     'message' => 'Something went wrong with the registration ... Please try again ...' 
); 

我總是得到「出了毛病，註冊...請再試一次...」。看起來rowCount是0.真的夠了，它不會插入到數據庫中。這是爲什麼？

Answer 1

嘗試：

$firephp->log(
     $stmt->debugDumpParams() 
     . "\n" 
     . var_export($stmt->errorInfo()); 

Answer 2

儘量把冒號在bindParam佔位符，等代替

$stmt->bindParam('username', $username); 

做

$stmt->bindParam(':username', $username); 

希望它能幫助！

Answer 3

當某人在主ID字段上關閉數據庫自動增量時會出現類似問題。檢查數據庫並確保它的設置正確。