Marcos

I’m still trying to wrap my head around OOP, having been brought up in procedural coding a long time ago. Been stretching my legs in PHP for a while now.

So I’ve read a lot about best practices and paradigms and such. Especially SOLID. And I’ve tried to do things in a number of different ways. MVC-style, I ended up with extremely long, convoluted models that were either tightly couple to everything else, or had to be injected with half a dozen dependencies. Then I swung back to fat controllers, who did pretty much all the work and the models were only like helpers.

Now, I need a judgement on my current approach. Would this be a valid (SOLID) OOP way of doing a user-account-management system:

class PDO_Wrapper { # wraps PHP's PDO functions nicely
    public function select(...);
    public function insert(...);
    public function delete(...);
    public function update(...);
}

class ORM extends PDO_Wrapper { # very basic
    public function load($id); # assigns everything in row $id to object paramters
    public function save(); # writes all object parameters to db
}

class User extends ORM { # some User specific functions
    public function hashPassword($password);
    public function sendConfirmationMail();
    ...
}

class Login extends User { # one model for each User action (login, register, forgot password...)
    public function login($input);
}

Kriss

In laravel framework i often use – Model::find($id)->orderedBy(param);

I would like to know how to achieve such expression. I began with this:

 Class Test
 {
    static public function write()
    {
       echo "text no 1";

       function second()
       {
          echo "text no 2";
       }
     }
 }

now i when i do

Test::write();

i get “text no 1”

what i want is to do:

Test::write()->second();

and get ” text no 2″

Unfortunately my way doesn’t work.

Is it possible ?

Excuse me for bad language – still learning.

user1020317

I’ve something like the following:

class a {

    private $firstVar;  

    function foo(){

        print_r( get_class_vars( 'b' ) );   
    }
}


class b extends a{

    public $secondVar;  

}

a::foo();
print_r( get_class_vars( 'b' ) );

The output is

Array ( [secondVar] => [firstVar] => ) 
Array ( [secondVar] => )

I pressume this is because when get_class_vars(‘b’) is called within a it has access to firstVar, but how can I get the function foo() to output just the class ‘b’ variables, without the parent variables?

Theres a solution on http://php.net/manual/en/function.get-class-vars.php which involves getting the a variables, then getting all a and b variables and then removing the ones that are in both, leaving just the b variables. But this method seems tedious. Is there another way?

Workaround I’m currently using:

class a {

    private $firstVar;  

    function foo(){

        $childVariables = array();

        $parentVariables = array_keys( get_class_vars( 'a' ));

        //array of 'a' and 'b' vars
        $allVariables = array_keys( get_class_vars( get_class( $this ) ) );

        //compare the two
        foreach( $allVariables as  $index => $variable ){

            if( !(in_array($variable, $parentVariables))){

                //Adding as keys so as to match syntax of get_class_vars()
                $childVariables[$variable] = "";
            }
        }

        print_r( $childVariables );
    }
}


class b extends a{

    public $secondVar;  

}

$b = new b;
$b->foo();

christian

I’m in the process of reorganizing an application.

At the start of my application I need an object to be initialized to represent the current user. I am planning an authentication class to handle logging in and logging out, and I am wondering if the initial session variable check for user id and database retrieval would be appropriate for this class as well or if there is a standard protocol?

Thanks

tim

I know you can extend a class when constructing it like the following:

class b extends a {
}

But is it possible to dynamically extend classes from the scripts? Such as:

$b = new b($input) extends a;

What I wish to accomplish is to extend the module differnetly wheither it’s used in admin rather than the public pages. I know I can create two different parent classes by the same name and only include one per admin or public. But my question is, is it possible to do it dynamically in PHP?