array(4) {
  ["do"]=>
  string(18) "preventivo-fiocchi"
  ["dc"]=>
  string(10) "1743262841"
  ["pag"]=>
  string(1) "8"
  ["tn"]=>
  string(4) "2545"
}
<br />
<b>Fatal error</b>:  Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /home/sirenesrry/nastripersonalizzati.net/inc_functions.php:48
Stack trace:
#0 /home/sirenesrry/nastripersonalizzati.net/inc_functions.php(48): mysqli_num_rows(false)
#1 /home/sirenesrry/nastripersonalizzati.net/functions.php(2): isUtente()
#2 /home/sirenesrry/nastripersonalizzati.net/index.php(49): require_once('/home/sirenesrr...')
#3 {main}
  thrown in <b>/home/sirenesrry/nastripersonalizzati.net/inc_functions.php</b> on line <b>48</b><br />