Código PHP:
$post = array(
"banner1"=>"@/images/banner1.jpg"
);
$ch=curl_init();
curl_setopt($ch, CURLOPT_URL, "upload.php?modulo=sincronizar&controlador=sincronizar&accion=ingresarPublicidad");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
$response=curl_exec($ch);
php no manda ningun warning, solo no funciona.