Warning: mysqli_num_rows() expects exactly 1 parameter, 2 given | mysql |mysqli [duplicate]

Answer 1

this error throws because PHP function

 int mysqli_num_rows ( mysqli_result $result )

needs only one argument.

Here is http://php.net/manual/ru/mysqli-result.num-rows.php documentation

Answer 2

correct way of doing is

$sql="SELECT COUNT(*) FROM xxx limit 2";

if ($result=mysqli_query($con,$sql))
  {
  // Return the number of rows in result set
  $rowcount=mysqli_num_rows($result);
  printf("Result set has %d rows.\n",$rowcount);
  // Free result set
  mysqli_free_result($result);
  }

mysqli_close($con);

Answer 3

mysqli_num_rows does nothing even remotely similar to mysql_result.

The replacement for mysql_result in mysqli in this case would be to fetch the entire row and use the first element only, something like;

$result = mysql_query("SELECT COUNT(*) FROM xxx limit 2") or die(mysql_error());
$row = mysqli_fetch_row($result);
$count = $row[0];

for($i=0; $i<$count;$i++){
    echo '<li data-target="#transition-timer-carousel" data-slide-to="'.$i.'"'; if($i==0){ echo 'class="active"'; } echo '></li>';
}

Answer 4

According to PHP Manual

you must change $count = mysqli_num_rows($count,0); into $count = mysqli_num_rows($count);

NOTE:Don't use mysql any more.This extension was deprecated in PHP 5.5.0