NewsFetch.php

<?php declare(strict_types=1);

require_once 'Page.php';
require_once 'util/constants.php';

class NewsFetch extends Page
{
    private const ID = "id";
    private const TITLE = "title";
    private const SEARCH_WORD = "searchWord";

    private string $searchWord;

    protected function __construct()
    {
        parent::__construct();

        $this->searchWord = "";
    }

    public function __destruct()
    {
        parent::__destruct();
    }

    protected function getViewData():array
    {
        $data = array();

        if (empty(trim($this->searchWord)))
            return $data;

        $likeSearchWord = "%" . $this->searchWord . "%";

		$stmt = $this->database->prepare("SELECT n.id, n.title FROM news n WHERE LOWER(n.title) LIKE LOWER(?) LIMIT 5");
        $stmt->bind_param("s", $likeSearchWord);
        $stmt->execute();
        $resultSet = $stmt->get_result();

        while($row = $resultSet->fetch_assoc()) {
            $id = $row[self::ID];
            $title = $row[self::TITLE];

            $data[] = array(self::ID => $id, self::TITLE => $title); 
        }

        return $data;
    }

    protected function generateView():void
    {
		$data = $this->getViewData();

        header("Content-type: application/json");
        
        $json = json_encode($data);
        echo $json;
    }

    protected function processReceivedData():void
    {
        parent::processReceivedData();

        if ($_SERVER['REQUEST_METHOD'] === 'GET') {
            if (isset($_GET[self::SEARCH_WORD])) {
                $this->searchWord = $_GET[self::SEARCH_WORD];    
            }
        }
    }

    public static function main():void
    {
        try {
            $page = new NewsFetch();
            $page->processReceivedData();
            $page->generateView();
        } catch (Exception $e) {
            header("Content-type: application/json");
            echo $e->getMessage();
        }
    }
}

NewsFetch::main();