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Inheritance Problem

Discussion in 'PHP' started by Rahul Bose, Oct 2, 2010.

0
  1. #1
    Hi
    I have three classes.
    Fatal error: Call to a member function froma() on a non-object in

    Where is the error? How can I access object type property?

    I want to use all class over the one class ( main class).
    for example:
    $m->Config->get();
    $m->Database->query("Select * From table");
    $m->Input->getPost();

    What is your suggestions?
     
    Rahul Bose, Oct 2, 2010 IP
  2. po_taka

    po_taka Peon

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    #2
    i dont know is it possible to do double extend, u need
    class main extend class A, class B { ... }

    1st option:
    use __call()

    2nd

    class main extend class a { .... }
    class a extend class b { ... }
    class b { ... }
     
    po_taka, Oct 2, 2010 IP
  3. stOK

    stOK Active Member

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    #3
    First I believe you are using php 4xx. __construct in php4 is not constructor. That's why $a and $b not initialized to objects.
    Second if you were using php 5+ you would end up in core dump. Coz you make stack overflow.
    main::__construct calls a's and b's implicit constructors when you use new and teh new()'s call main::__construct coz a and b extend main class.
     
    stOK, Oct 2, 2010 IP