linkvz/index.php

<?php



// Versuch der Objektorientierung

class Link{
   public $name;
   public $url;

   public function __construct($newName, $newUrl){
      $this->name = $newName;
      $this->url = $newUrl;
   }
}

class dbLinkHandler
{
   private $pdo;

   public function __construct()
   {
      try
      {
         // Verbindung zur Datenbank herstellen
         $this->pdo = new PDO('mysql:host=localhost;dbname=linkdb', 'linkdb', 'linkdb');
         $this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
         
         // Tabelle link erstellen, falls nicht vorhanden
         
         $sql = 'CREATE TABLE IF NOT EXISTS link (
            link_id BIGINT(18) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
            link_url VARCHAR(30) NOT NULL,
            link_name VARCHAR(30),
            reg_date TIMESTAMP
            )';
            
         $this->pdo->exec($sql); // use exec() because no results are returned
      }
      catch(PDOException $e)
      {
         echo $sql . "<br>" . $e->getMessage();
      }
   }

   public function saveLink($link)
   {
      $statement = $this->pdo->prepare('INSERT INTO link(link_url, link_name) VALUES (:link_url, :link_name)');
      $statement->execute
      ([
         ':link_url'    => $link->url,
         ':link_name'   => $link->name
      ]);
   }

   public function getListReverse()
   {
      // Mit verschachtelten Arrays optimieren!! Array schlüssel id enthält array mit schlüssel link_id, link_name, etc (repräsentiert datensatz)
      $list = array();
      $sql = "SELECT * FROM link ORDER BY link_id DESC";

      return $this->pdo->query($sql);
   }

   public function getList()
   {
      // Mit verschachtelten Arrays optimieren!! Array schlüssel id enthält array mit schlüssel link_id, link_name, etc (repräsentiert datensatz)
      $list = array();
      $sql = "SELECT * FROM link";

      return $this->pdo->query($sql);
   }
}

// Main
$db = new dbLinkHAndler();

$link1=new Link("cloud.therealblue.de", "https://cloud.therealblue.de");

$db->saveLink($link1);

foreach ($db->getListReverse() as $link)
{
   echo $link['link_id'].': <a href="'.$link['link_url'].'" target="_blank">'.$link['link_name'].'</a><br>';
}

?>