<?php

	class CircleCrop
	{

	    private $src_img;
	    private $src_w;
	    private $src_h;
	    private $dst_img;
	    private $dst_w;
	    private $dst_h;

	    public function __construct($img, $dstWidth, $dstHeight)
	    {
	        $this->src_img = $img;
	        $this->src_w = imagesx($img);
	        $this->src_h = imagesy($img);
	        $this->dst_w = $dstWidth;
	        $this->dst_h = $dstHeight;
	    }

	    public function __destruct()
	    {
	        if (is_resource($this->dst_img))
	        {
	            imagedestroy($this->dst_img);
	        }
	    }

	    public function display()
	    {
	        header("Content-type: image/png");
	        imagepng($this->dst_img);
	        return $this;
	    }

	    public function reset()
	    {
	        if (is_resource(($this->dst_img)))
	        {
	            imagedestroy($this->dst_img);
	        }
	        $this->dst_img = imagecreatetruecolor($this->dst_w, $this->dst_h);
	        imagecopy($this->dst_img, $this->src_img, 0, 0, 0, 0, $this->dst_w, $this->dst_h);
	        return $this;
	    }

	    public function size($dstWidth, $dstHeight)
	    {
	        $this->dst_w = $dstWidth;
	        $this->dst_h = $dstHeight;
	        return $this->reset();
	    }

	    public function crop()
	    {
	        $this->reset();

	       	$mask = imagecreatetruecolor($this->dst_w, $this->dst_h);
	        $maskTransparent = imagecolorallocate($mask, 255, 0, 255);
	        imagecolortransparent($mask, $maskTransparent);
	        imagefilledellipse($mask, $this->dst_w / 2, $this->dst_h / 2, $this->dst_w, $this->dst_h, $maskTransparent);
	        
	        imagecopymerge($this->dst_img, $mask, 0, 0, 0, 0, $this->dst_w, $this->dst_h, 100);

	        $dstTransparent = imagecolorallocate($this->dst_img, 255, 0, 255);
	        imagefill($this->dst_img, 0, 0, $dstTransparent);
	        imagefill($this->dst_img, $this->dst_w - 1, 0, $dstTransparent);
	        imagefill($this->dst_img, 0, $this->dst_h - 1, $dstTransparent);
	        imagefill($this->dst_img, $this->dst_w - 1, $this->dst_h - 1, $dstTransparent);
	        imagecolortransparent($this->dst_img, $dstTransparent);

	        return $this;
	    }

	}

	if(isset($_GET['path'])) {

		$path = $_GET["path"];
		$image = imagecreatefromjpeg($path);

		$width = imagesx($image);
		$height = imagesy($image);
		$crop = new CircleCrop($image,$width,$height);
		$crop->crop()->display();

	}

?>