私は独自のデータベースクラスを作成しようとしています。私はすべての資格情報を宣言していますが、エラーによって、指定されたデータベースがないことがわかります。PDO:データベース資格情報
Fatal error: Uncaught PDOException: SQLSTATE[3D000]: Invalid catalog name: 1046 No database selected in /var/www/html/jwagter/work/database/Database.php:69 Stack trace: #0 /var/www/html/jwagter/work/database/Database.php(69): PDOStatement->execute() #1 /var/www/html/jwagter/work/database/tutorial.php(22): Database->execute() #2 {main} thrown in /var/www/html/jwagter/work/database/Database.php on line 69
のindex.php:
<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
define("DB_HOST", "localhost");
define("DB_USER", "root");
define("DB_PASS", "secret");
define("DB_NAME", "test");
require 'Database.php';
$database = new Database();
$database->query('INSERT INTO mytable (FName, LName, Age, Gender) VALUES (:fname, :lname, :age, :gender)');
$database->bind(':fname', 'Joris');
$database->bind(':lname', 'Wagter');
$database->bind(':age', '27');
$database->bind(':gender', 'male');
$database->execute();
echo $database->lastInsertId();
database.phpで
<?php
class Database
{
private $host = DB_HOST;
private $user = DB_USER;
private $pass = DB_PASS;
private $dbname = DB_NAME;
private $dbh;
private $error;
private $stmt;
public function __construct()
{
echo "in class Database";
$dsn = 'mysql:host' . $this->host . ';dbname=' . $this->dbname;
$options = array(
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
);
try {
$this->dbh = new PDO($dsn, $this->user, $this->pass, $options);
} catch (PDOExeption $e) {
$this->error = $e->getMessage();
}
}
public function query($query)
{
$this->stmt = $this->dbh->prepare($query);
}
public function bind($param, $value, $type = null)
{
if (is_null($type)) {
switch (true) {
case is_int($value):
$type = PDO::PARAM_INT;
break;
case is_bool($value):
$type = PDO::PARAM_BOOL;
break;
case is_null($value):
$type = PDO::PARAM_NULL;
break;
default:
$type = PDO::PARAM_STR;
}
}
$this->stmt->bindValue($param, $value, $type);
}
public function execute()
{
return $this->stmt->execute();
}
public function resultset()
{
$this->execute();
return $this->stmt->fetchAll(PDO::FETCH_ASSOC);
}
public function single()
{
$this->execute();
return $this->stmt->fetch(PDO::FETCH_ASSOC);
}
public function rowCount()
{
return $this->stmt->rowCount();
}
public function lastInsertId()
{
return $this->dbh->lastInsertId();
}
public function beginTransaction()
{
return $this->dbh->beginTransaction();
}
public function endTransaction()
{
return $this->dbh->commit();
}
public function cancelTransaction()
{
return $this->dbh->rollBack();
}
DSN文字列に少なくとも1つの誤字があります。あなたのデータベースクラス(多くの一般的な間違いに苦しんでいる)[https://phpdelusions.net/pdo/common_mistakes] –
ありがとう、私はあなたが私に送ったリンクを調べます –