public function getBindParamPos()
{
$params = array();
foreach ($this->params as $fun_name => $calls) {
foreach ($calls as $id => $call) {
foreach ($call as $num => $arg) {
list($is_const, $value, $pos, $info) = $arg;
if ($pos !== -1) {
$params[] = $pos;
}
}
}
}
return $params;
}