<?php
class GetImage {

var $source;
var $save_to;
var $set_extension;
var $quality;

function download($method = 'curl') 
{
$info = @GetImageSize($this->source);
$mime = $info['mime'];

if(!$mime) exit('Не могу определить тип');


$type = substr(strrchr($mime, '/'), 1);

switch ($type) 
{
case 'jpeg':
    $image_create_func = 'ImageCreateFromJPEG';
    $image_save_func = 'ImageJPEG';
   $new_image_ext = 'jpg';
   
   $quality = isSet($this->quality) ? $this->quality : 100; 
    break;

case 'png':
    $image_create_func = 'ImageCreateFromPNG';
    $image_save_func = 'ImagePNG';
   $new_image_ext = 'png';
   
   $quality = isSet($this->quality) ? $this->quality : 0;
    break;

case 'bmp':
    $image_create_func = 'ImageCreateFromBMP';
    $image_save_func = 'ImageBMP';
   $new_image_ext = 'bmp';
    break;

case 'gif':
    $image_create_func = 'ImageCreateFromGIF';
    $image_save_func = 'ImageGIF';
   $new_image_ext = 'gif';
    break;

case 'vnd.wap.wbmp':
    $image_create_func = 'ImageCreateFromWBMP';
    $image_save_func = 'ImageWBMP';
   $new_image_ext = 'bmp';
    break;

case 'xbm':
    $image_create_func = 'ImageCreateFromXBM';
    $image_save_func = 'ImageXBM';
   $new_image_ext = 'xbm';
    break;

default: 
   $image_create_func = 'ImageCreateFromJPEG';
    $image_save_func = 'ImageJPEG';
   $new_image_ext = 'jpg';
}

if(isSet($this->set_extension))
{
$ext = strrchr($this->source, ".");
$strlen = strlen($ext);
$new_name = basename(substr($this->source, 0, -$strlen)).'.'.$new_image_ext;
}
else
{
$new_name = basename($this->source);
}

$save_to = $this->save_to.$new_name;

    if($method == 'curl')
   {
    $save_image = $this->LoadImageCURL($save_to);
   }
   elseif($method == 'gd')
   {
   $img = $image_create_func($this->source);

       if(isSet($quality))
       {
         $save_image = $image_save_func($img, $save_to, $quality);
      }
      else
      {
         $save_image = $image_save_func($img, $save_to);
      }
   }
   
   return $save_image;
}

function LoadImageCURL($save_to)
{
$ch = curl_init($this->source);
$fp = fopen($save_to, "wb");

$options = array(CURLOPT_FILE => $fp,
                 CURLOPT_HEADER => 0,
                 CURLOPT_FOLLOWLOCATION => 1,
                CURLOPT_TIMEOUT => 60); 

curl_setopt_array($ch, $options);

$save = curl_exec($ch);
curl_close($ch);
fclose($fp);

return $save;
}
}
?>

<?php
include_once 'class.get.image.php';

$image = new GetImage;

$image->source = 'http://ero-devo4ki.wen.ru/Popki/1.jpg';
$image->save_to = 'images/'; 

$get = $image->download('curl'); 

if($get)
{
echo 'Картинка сохранена.';
}
?>