Sometimes, readers submit code and say, "every line is wrong!" Usually, they mean that every line contains a bad choice, or represents a bad way of accomplishing the program's goal, or there's a series of compounding mistakes.

David sends us a block which… well, yes, every line is wrong, because every line contradicts every other one.

    /**
    * gets instance of Product Status object
    *
    * @return object Warehouse Supplier object
    */    
    function __construct() {
      $this->_price = new OrderValidator();
    }

The only thing "correct" about this is that PHP does have you name your constructor __construct. Ignoring that, between the comment and the one line of executable code, not a single thing agrees with anything else. I'd suspect that this was progamming by copy/paste, but I feel like that'd be more coherent. It might be really bad AI generated code, but David assures us that this was written by an actual human.