pattern.php

<?php
interface ComparativeFood
{
  public static function isApplicable(Food $food)
}
class Food {}
abstract class MarketFood implements ComparativeFood
{
  public function __construct(Food $food, Envirorment $env)
  {}
}
abstract class Fruits extends MarketFood{}
abstract class Vegitables extends MarketFood{}

class Apple extends Fruits
{
  /**
   * @return bool
   */
  public static function isApplicable(Food $food)
  {
    return 'sphere' === $food->getForm()
            && 'white' === $food->getInsideColor();
  }
}

class Watermelon extends Vegitables
{
  /**
   * @return bool
   */
  public static function isApplicable(Food $food)
  {
    return 'sphere' === $food->getForm()
            && 'red' === $food->getInsideColor();
  }
}

class Creator {
  public function __construct()
  {
    $this->food['fruits'] = ['Apple'];
    $this->food['vegitables'] = ['Watermelon'];
  }
  
  /**
   * @return MarketFood|null
   */
  public function create(Food $food, $type)
  {
    foreach ($this->food[$type] as $concreteFood)
    {
      if ($concreateFood::isApplicable($food)) {
        return new $concreateFood($food, $envirorment);
      }
      
      return null;
    }
  }
}

$food = new Food();
$food->setForm('sphere');
$food->setColor('red');

$marketFood = $creator->create($food, 'vegitables');
var_dump(get_class($marketFood)); // Watermelon

$food->setColor('white');

$marketFood = $creator->create($food, 'fruits');
var_dump(get_class($marketFood)); // Apple