upload files od jiné domény

$im = imagecreatefromstring(file_get_contents(rawurldecode($_POST["url"])));
$width=imagesx($im);
$height=imagesy($im);
........

if(!$img = file_get_contents($_POST['img_url'])) { 
  die('chzba'); 
} 

if(!file_exists(IMAGE_DIR."/".$_POST['rename'])){ 
  if(!file_put_contents(IMAGE_DIR.'/'.$_POST['rename'], $img)) { 
    die('chzba'); 
  }else{ echo "uploaded ".$_POST['rename']. "<br />";}
}else{
echo "existuje";
}

if(($data = @file_get_contents('http://nejakadomena.cz/obrazek.jpg')) !== false) {
  if(@file_put_contents('./obrazky/test.jpg', $data) !== false) echo 'OK';
  else echo 'Nepodarilo se zapsat do ciloveho souboru!';
} else echo 'Nepodarilo se nacist zdrojovy soubor';

if($extension=="jpg"  OR  $extension=="jpeg"){
 imageinterlace($nahled, 1);
 imagecopyresized($nahled, $im, 0, 0, 0, 0, $nahled_s, $nahled_v, $width, $height);
 imagejpeg($nahled, $slozka);
}
atd..

<?php
function download_img($from, $dir = '', $max_width = 0, $max_height = 0, $tmp_dir = ''){
	$accept_type = array(
		'image/gif' 	=> 'gif',
		'image/png' 	=> 'png',
		'image/jpeg' 	=> 'jpg',
		'image/pjpeg' 	=> 'jpg',
		'image/jpg' 	=> 'jpg'
	);

	$curl = curl_init();
	curl_setopt($curl, CURLOPT_URL, rawurldecode($from));
	curl_setopt($curl, CURLOPT_FAILONERROR, 1);
	curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($curl, CURLOPT_TIMEOUT, 10);
	curl_setopt($curl, CURLOPT_AUTOREFERER, 1);
	$img_data = curl_exec($curl);
	curl_close($curl);

	$return = false;
	if ($img_data != ''){
		if (mb_substr($tmp_dir, mb_strlen($tmp_dir) - 1) != '/' && $tmp_dir != '') $tmp_dir .= '/';
		$tmp_file = md5($tmp_dir.$from).'.tmp';
		$f = fopen($tmp_file, 'wb');
		fwrite($f, $img_data);
		fclose($f);
		unset($img_data);

		$img_info = getimagesize($tmp_file);
		if (array_key_exists($img_info['mime'], $accept_type)){
			$ext = $accept_type[$img_info['mime']];
			if (mb_substr($dir, mb_strlen($dir) - 1) != '/' && $dir != '') $dir .= '/';
			$to = $dir.md5($from).'.'.$ext;

			if ($max_width > 0 || $max_height > 0){
				list($width, $height) = $img_info;

				if ($width > $max_width || $height > $max_height){
					switch ($ext){
						case 'gif':
							$imgsrc = imagecreatefromgif($tmp_file);
							break;
						case 'png':
							$imgsrc = imagecreatefrompng($tmp_file);
							break;
						case 'jpg':
							$imgsrc = imagecreatefromjpeg($tmp_file);
							break;
 					}

					$imgratio = $width / $height;
					if ($imgratio > 1){
						$new_width = $max_width;
						$new_height = $max_width / $imgratio;
					} else {
						$new_height = $max_width;
						$new_width = $max_width * $imgratio;
					}

					$newimg = imagecreatetruecolor($new_width, $new_height);
					if ($ext == 'gif' || $ext == 'png'){
						$bgcolor = imagecolorallocate($newimg, 255, 255, 255);
						imagefill($newimg, 0, 0, $bgcolor);
						imagecolortransparent($newimg, $bgcolor);
					}
					imagecopyresampled($newimg, $imgsrc, 0, 0, 0, 0, $new_width, $new_height, $width, $height);

					if (file_exists($to)) unlink($to);
					switch ($ext){
						case 'gif':
							$imgsrc = imagegif($newimg, $to);
							break;
						case 'png':
							$imgsrc = imagepng($newimg, $to);
							break;
						case 'jpg':
							$imgsrc = imagejpeg($newimg, $to, 90);
							break;
 					}

					$return = array(
						'file'		=> $to,
						'width'		=> $width,
						'height'	=> $height,
						'type'		=> $img_info['mime']
					);
				}
			} else {
				copy($tmp_file, $to);
			}
		}

		unlink($tmp_file);
	}

	return $return;
}



/*
Použití:
$newimg = download_img('http://www.autorevue.cz/files/564783651.jpg', 'images', 300, 300, 'temp');
$newimg = download_img('http://www.autorevue.cz/files/564783651.jpg', 'images', 300, 300);
$newimg = download_img('http://www.autorevue.cz/files/564783651.jpg', 'images');
$newimg = download_img('http://www.autorevue.cz/files/564783651.jpg', '', 0, 0, 'temp');
$newimg = download_img('http://localhost/et.jpg');
*/

$newimg = download_img('http://www.autorevue.cz/files/564783651.jpg', '', 300, 300);
print_r($newimg);

$imgratio = $width / $height;
                    if ($imgratio > 1){
                        $new_width = $max_width;
                        $new_height = $max_width / $imgratio;
                    } else {
                        $new_height = $max_width;
                        $new_width = $max_width * $imgratio;
                    }

$extension = strtolower(end(explode('.', $_POST["url"])));

$nahled = imagecreatetruecolor($new_width, $new_height);

if($extension=="jpg"  OR  $extension=="jpeg"){
 imageinterlace($nahled, 1);
 imagecopyresized($nahled, $im, 0, 0, 0, 0, $nahled_s, $nahled_v, $width, $height);
 imagejpeg($nahled, $slozka);
}
if($extension=="png"){
 imageinterlace($nahled, 1);
 imagecopyresized($nahled, $im, 0, 0, 0, 0, $nahled_s, $nahled_v, $width, $height);
 imagepng($nahled, $slozka);
}
if($extension=="gif"){
 imageinterlace($nahled, 1);
 imagecopyresized($nahled, $im, 0, 0, 0, 0, $nahled_s, $nahled_v, $width, $height);
 imagegif($nahled, $slozka);
}