mysqli : mysqli_result could not be converted to string

Question

I know there have been asked lots of similair questions like this one, but I just can\'t translate it to my problem so thats why I ask again. The code used to work fine but

Answer 1

That is because mysqli_result is a result set. I don't know what you would expect to gain from echoing it, just as you wouldn't get anything meaningful from echoing the result set of a mysql_query query which uses a SELECT.

You need to use the various class methods to access data in the result set.

http://php.net/manual/en/class.mysqli-result.php

Answer 2

$num=$result->num_rows;

echo "<b><center>Database Output</center></b><br><br>";

while ($row = $result->fetch_assoc()) {  

   echo "<u>".$row['id']."</u><b>".$row['first']."</b>"; //etc...
 }

is much easier.