Too few arguments to function Db::__construct(), 0 passed in

Question

i have 3 pages one for connect the DB

class Db{

private $dbUserName =\"root\";
private $dbName = \"oop\";
private $dbPas = \"\";
private $dbHost = \"127.0.0         


        

Answer 1

Your base class constructor expects 4 arguments:

class Db{

...

    public function __construct($dbUserName, $dbName, $dbPas, $dbHost)
    {
        ...
    }

So you can not create the child class without parameters. You need to either do:

$users = new ViewUser('root', 'dbname', 'pass', 'host');

Or put defaults into constructor declaration:

public function __construct($dbUserName='root', $dbName='db', $dbPas='pass', $dbHost='host')
{
    ...
}

But in general, the inheritance is misused here. You'd better have a separate Db class to manage DB and use it as a component inside your other classes (use composition instead of inheritance).