Original form:
while (@onerow = $query->fetchrow_array())
{
  # do something with @onerow
}

Alternative #1 (do-while):
do
{
  @onerow = $query->fetchrow_array();
  if (@onerow)
  {
     # do something with @onerow
  }
} while(@onerow);

Alternative #2 (while without assignment in condition)
@onerow = $query->fetchrow_array();
while (@onerow)
{
  # do something with @onerow
  @onerow = $query->fetchrow_array();
}

sample input:
tak@drtak.org, TAk, secret
auyeunt@arc.losrios.edu, Prof. Tak, nosecret

$query = $dbh->prepare('INSERT ... '.$result[0].',,;
$query->execute();
$query = $dbh->prepare('INSERT ... 'auyeunt@arc.losrios.edu',....);
$query->execute();