$fp = fopen(sdfConfig::get('sf_upload_dir').DIRECTORY_SEPARATOR.'parametros.txt', 'w');
try {fwrite($fp, $object->getId());} catch(Exception $e) {throw sfException('error');}
fclose($fp);
$fp = fopen(sdfConfig::get('sf_upload_dir').DIRECTORY_SEPARATOR.'parametros.txt', 'r');
try {$buffer = fgets($handle, 4096);} catch(Exception $e) {throw sfException('error');}
$myId = $buffer;
fclose($fp);