Deviad

<?php

class DbMgmt
{
    const SERVERNAME = 'localhost';
    const USERNAME = 'root';
    const PASSWORD = '';
    const DBNAME = 'my_database';
    public static $conn;

    public static function newConn()
    {
        try {
            self::$conn = new PDO('mysql:host='.self::SERVERNAME, self::USERNAME, self::PASSWORD);
            self::$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            $sql = 'USE ' . self::DBNAME;
            self::$conn->exec($sql);
            echo "Connection established <br>";

            return self::$conn;
        } catch (PDOException $e) {
            echo $sql.'<br>'.$e->getMessage();
        }
    }

    /*public static function createDB()
    {
        try {
            // set the PDO error mode to exception

        self::$conn = new PDO('mysql:host='.self::SERVERNAME, self::USERNAME, self::PASSWORD);
            self::$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            $sql = 'CREATE DATABASE '.self::DBNAME.';';
            $sql .= 'USE '.self::DBNAME;
            // use exec() because no results are returned
            self::$conn->exec($sql);
            echo 'Database '."''".self::DBNAME."''".' created successfully <br>';
            $sql = 'CREATE TABLE tasks ( task_id INT UNSIGNED NOT NULL AUTO_INCREMENT, parent_id INT UNSIGNED NOT NULL DEFAULT 0, task VARCHAR(100) NOT NULL, date_added TIMESTAMP NOT NULL, date_completed TIMESTAMP, PRIMARY KEY (task_id), INDEX parent (parent_id), INDEX added (date_added), INDEX completed (date_completed))';
            self::$conn->exec($sql);
            echo 'Table(s) added correctly<br>';
        } catch (PDOException $e) {
            echo $sql.'<br>'.$e->getMessage();
        }
        self::$conn = null;
    }*/
}





class DbObj
{
    protected static $the_table = Null;
    protected static $the_attrs = NUll;
    protected static $projection = Null;
    public static $the_values;



    public static function addObj($the_table, $the_attrs, $the_values)
    {
        echo "INTO THE GENERIC FUNCTION";
        var_dump($the_table);
        var_dump($the_attrs);
        var_dump($the_values);
        $sql     = "INSERT INTO $the_table ( $the_attrs )  VALUES ( $the_values );";
        $pdo_obj = DbMgmt::newConn(); //get the pdo object
        $stmt    = $pdo_obj->prepare($sql);
        $stmt->execute();
        echo "Data inserted!";

    }

    public static function rmObj($the_table, $the_attrs, $the_values)
    {
        $sql     = "DELETE FROM $the_table WHERE ($the_attrs) =  ( $the_values );";
        $pdo_obj = DbMgmt::newConn(); //get the pdo object
        $stmt    = $pdo_obj->prepare($sql);
        $stmt->execute();
        echo "Data deleted!";
    }

    public static function getObj($projection, $the_table, $the_attrs, $the_values)
    {
        $sql = "SELECT $projection FROM $the_table WHERE $the_attrs LIKE $the_values;";
        $pdo_obj = DbMgmt::newConn(); //get the pdo object
        $stmt    = $pdo_obj->prepare($sql);
        $stmt->execute();
        $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
        return $result;
        //echo "Data fetched!";

    }
}


//VALUE MUST BE INSIDE QUOTES LIKE THIS: 'VALUE1', 'VALUE2'

//$task1 = Task::addTask("'Pippo'");

class MenuItems extends DbObj {
    protected static $projection = "title,path";
    protected static $the_table = "tance_menu";
    protected static $the_attrs = "menutype";

    public static function getArticle($the_values) {

        parent::getObj(self::$projection, self::$the_table, self::$the_attrs, $the_values);

    }
}

  MenuItems::getArticle("'mainmenu'");


?>

    <ul>
        <?php
          $menu_item_list = MenuItems::getArticle("'mainmenu'");
          var_dump($menu_item_list);
          foreach ($menu_item_list as &$an_item) {
            foreach ($an_item as $key => &$value) {
              echo "<li><a href='$value'>$key</a></li>";
            }
          }
        ?>
   </ul>