致命错误:未找到"SELF"类

Question

我有以下相关代码:

try {
    self::$db = new PDO($dsn, self::USER, SELF::PASS); //Connect to the database, and store the pdo object.
    self::$db->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
}
catch (PDOException $e) {
    throw new Exception("There have been an error in the connection: ". $e->getMessage());
}

当执行此代码所在的静态函数时,我收到以下错误:

致命错误:在第107行的P:ath/to/script.php中找不到"SELF"类

我不知道是什么原因造成这种情况,有人可以赐教吗？

提前致谢.

Answer 1

用self::PASS而不是SELF::PASS