cURL and image upload

There is a cURL that processes the image and sends it to the server:

[code=php]if ($_POST[“upload”]) {
define(‘BASEPATH’, str_replace(‘\’, ‘/’, dirname(__FILE__)) . ‘/’);
$upload_url = $_POST[“upload”];
$post_params[‘file1’] = ‘@’.BASEPATH.’01.jpg’;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $upload_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_params);
$result = curl_exec($ch);
curl_close($ch);

echo $result;
}[/code]

In this case it takes the path (‘@’.BASEPATH.’01.jpg’) to the images with strictly specified name on my server… But how to take an image through a link with a variable (../image.php?image_id=’.$img.’) where $img is the name/number of image? Thanx

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