尝试遵循OOP PDO教程,该教程是创建数据库类的指南。
但是在尝试使用此类时,我收到以下错误。
Fatal error: Call to a member function prepare() on a non-object
它指向的是这个函数:
public function query($query){
$this->stmt = $this->dbh->prepare($query);
}
之前的课程是:
class Database {
private $host = 'localhost:8889';
private $user = 'root';
private $pass = 'root';
private $dbname = 'PHPGamble';
private $dbh;
private $error;
private $stmt;
public function __construct(){
// Set DSN
$dsn = 'mysql:host=' . $this->host . ';dbname=' . $this->dbname;
// Set options
$options = array(
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
);
// Create a new PDO instanace
try{
$this->dbh = new PDO($dsn, $this->user, $this->pass, $options);
}
// Catch any errors
catch(PDOException $e){
$this->error = $e->getMessage();
}
}
public function query($query){
$this->stmt = $this->dbh->prepare($query);
}
我正在尝试使用这样的类:
require('../libs/PHP_Classes/class.database.php');
$database = new Database();
// insert new table
$database->query('INSERT INTO tables (table_buyin) VALUES (:table_buyin)');
$database->bind(':table_buyin', '50');
$database->execute();
任何有关出错的帮助?
感谢。