<?php

//örnek bir OOP (object oriented) kullanım:
class Categories
{
    private $categories;

    /**
     * @param array $categories
     */
    public function __construct(array $categories)
    {
        $this->categories = $categories;
    }

    /**
     * @param array $categories
     */
    public function setCategories(array $categories)
    {
        $this->categories = $categories;
    }

    /**
     * @return array
     */
    public function getCategories(): array
    {
        return $this->categories;
    }

    public function printAllCategories()
    {
        foreach ($this->categories as $category)
        {
            echo $category . PHP_EOL;
        }
    }
}


$stringText = "love food education health";

$result = array();

$result = explode(' ', $stringText);

$siteCategories = new Categories($result);

$siteCategories->printAllCategories();
/*
 * Sonuç:
 * love
 * food
 * education
 * health
 */