<?php

  class databaseConnect {

    public function __construct($serverName, $dbName, $dbUsername, $dbPassword) {
      $this->serverName = $serverName;
      $this->dbName = $dbName;
      $this->dbUsername = $dbUsername;
      $this->dbPassword = $dbPassword;
    }

    public function databaseQuery() {
      $conn = new PDO("mysql:host={$this->serverName};dbname={$this->dbName}", $this->dbUsername, $this->dbPassword);
      $query = $conn->query("Select * from posts");
      foreach ($query as $row) {
        echo $row['id'] . ".<br>";
        echo $row['subject'] . ".<br>";
        echo $row['content'] . "<br>";
        echo $row['date'] . ".<br>";
      }
    }
  }
  $classname = new databaseConnect("Localhost", "phplessons", "root", "");
  $classname->databaseQuery();
?>