$c->execAsync("SELECT a from generate_series(1,10) a", function($res) {
switch ($res->status) {
case pq\Result::SINGLE_TUPLE:
- printf("%s\n", $res->fetchCol());
+ $res->fetchCol($val);
+ printf("%s\n", $val);
break;
case pq\Result::TUPLES_OK:
printf("-> fetching done\n");