[Risolto] Problema ->prepare()

class pdo_connect
{
private $pdo;
public function __construct()
{
$this->pdo = new PDO("mysql:host=localhost;dbname=xxx;", "xxx", "xx");
}

public function login($email,$password)
{
$query = "
SELECT * FROM account
WHERE email = :email
AND password = :password";

$statement = $pdo->prepare($query);
$statement->bindValue(":email", $email, PDO::PARAM_STR);
$statement->bindValue(":password", $password, PDO::PARAM_STR);
$statement->execute();
}
}

private $pdo;

$statement = $this->pdo->prepare($query);

$statement = $pdo->prepare($query);

$statement = $this->pdo->prepare($query);

...$this->pdo->prepare()...

class pdo_connect
{
private $pdo;
public function __construct()
{
try
{
$this->pdo = new PDO("mysql:host=localhost;dbname=xxx;", "xxx", "xxx");
}
catch ( PDOException $e )
{
echo 'ERROR!';
print_r( $e );
return false;
}
return true;
}

public function login($email,$password)
{

$query = "SELECT * FROM account WHERE email = :email AND password = :password";
try
{
$statement = $this->$pdo->prepare($query);
$statement->bindValue(":email", $email, PDO::PARAM_STR);
$statement->bindValue(":password", $password, PDO::PARAM_STR);
$statement->execute();
}
catch ( PDOException $e )
{
echo 'ERROR!';
print_r( $e );
return false;
}
return true;
}
}

$this->pdo = new PDO("mysql:host=localhost;dbname=xxx;", "xxx", "xxx");

$statement = $this->$pdo->prepare($query);

$statement = $this->pdo->prepare($query);

$statement = $this->pdo->prepare($query);