Question

Please tell, why this code is wrong?

function myres () {
   $db = new mysqli("localhost","userrr","pass","mvc");
   $res = $db->query("SELECT * FROM news ");
   return $res;
}


while ($row = myres()->fetch_row()) {
    echo  $row[0];
}

P.S.
this code is working:

$db = new mysqli("localhost","userrr","pass","mvc");
$res = $db->query("SELECT * FROM news ");
while ($row = $res->fetch_row()) {
    echo  $row[0];
}

Answer 1

Here you call myres() every time, I think:

while ($row = myres()->fetch_row()) {
  echo  $row[0];
}

So every time $row contain first row of the result, and it will not stop. It will works fine, I think:

$res = myres();

while ($row = $res->fetch_row()) {
  echo  $row[0];
}