Retrive result from multiple query dramatically slow

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Hi,
after run multiple query using mysqli->multi_query()
according to documentation I have to loop on result before
try to run another multi_query().

I do like documentation, but retriving result is dramatically slow.


I have no idea why, so at the end I write in this forum to have an help
from the community.


Documentation says, but this loop take seconds of time .... and it is not useful

if (mysqli_multi_query($link, $query)) {
do {
/* store first result set */
if ($result = mysqli_use_result($link)) {
while ($row = mysqli_fetch_row($result)) {
printf("%s\n", $row[0]);
}
mysqli_free_result($result);
}
/* print divider */
if (mysqli_more_results($link)) {
printf("-----------------\n");
}
} while (mysqli_next_result($link));
}