Online-Academy

• Introduction
• SDLC
• Static and Dynamic Models
• Verifying Card and PIN at ATM
• Sequence Diagram
• Use Case
• Activity Diagram
• Class Diagram
• Separation of Concern
• GRASP
• GoF Design Patterns
• Factory and Observer
• Domain Model
• Unified Modeling Language
• Q and A
• SingleTon and Adapter Examples
• Adapter_new
• Observer Design Pattern Code_New
• Singleton Design Pattern Code New
• Factory Design Pattern Code_New
• Sequence Diagram to Code
• QandA_2023
• QandA_2023_II
• Questions for Lab Report
• Creating sales Object
• Connect
• Products
• Class_to_code
• Writing Classes in PHP

OOAD - Object Oriented Analysis and Design

Sequence Diagram to Code

<?php
class UI{
    public function __construct(){
        echo "<form method='post' action='usermanager.php'>";
        echo "<p><input type='text' name='uid'></p>";
        echo "<p><input type='text' name='pwd'></p>";
        echo "<p><input type='submit' name='submit'></p>";
    }
}

class usermanager{
    private $userDetails;
    private $uid, $pwd,$result;
    public function validateData($uid, $pwd){
        echo "<br/>uid: ".$uid. " ".$pwd;
        $this->userDetails = new userDetails();
        $result = $this->userDetails->getData();
        //echo "<br>Count: ".count($result);
        while($row = mysqli_fetch_assoc($result)){
            if($row["id"] == $uid && $row["password"]==$pwd){
                echo "Welcome<br><a href='ui.php'>Back</a>";
                break;
            }
        }
    }
}

class userDetails{
    private $con,$result;
    public function __construct(){
        $this->con = new mysqli("localhost","root","","test");
    }
    public function getData(){
        $this->result = $this->con->query("select id,password from users");
        return $this->result; 
    }
}
?>