<?php
 
interface GeneratorInterface
{
    public function showImage();
}
 
// realsubject sınıfı
 
class ImageGenerator implements GeneratorInterface
{
    private $image;
 
    function __construct($image)
    {
        $this->image = $image;
    }
 
    function showImage()
    {
        echo $this->image.' resmi yuklendi<br>';
    }
}
 
// proxy subject sınıfı
 
class ImageGeneratorProxy implements GeneratorInterface
{
    private $generator = null;
    private $image;
 
 
    function __construct($image)
    {
        $this->image = $image;
    }
 
    function showImage()
    {
        if($this->generator == null)
        {
            $this->generator = new ImageGenerator($this->image);
            echo "yeni sınıf olusturuldu - ";
        } else {
            echo "eski sınıf yuklendi - ";
        }
 
        $this->generator->showImage();
    }
}

$proxy1 = new ImageGeneratorProxy('a');
$proxy2 = new ImageGeneratorProxy('b');
 
$proxy1->showImage();
$proxy2->showImage();
$proxy1->showImage();