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Fatal error: Call to a member function fetch_array() on a non-object

breeze351
breeze351 asked
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Last Modified: 2016-07-16
Why would the following code produce the above error the 3rd itteration?

while ($row_comp = $comp->fetch_array())
{
      $comp_count++;
      $comp_id = $row_comp['TID'];            
      $SqlString = "select * from pers where TID = \"$comp_id\"";
      echo "str = ".$SqlString."<br>";
      $pers = $conn->query($SqlString);
      while ($row_pers = $pers->fetch_array())
      {

The screen output looks like this:
str = select * from pers where TID = "10019706"
str = select * from pers where TID = "10019771"
str = select * from pers where TID = "10019779"

Fatal error: Call to a member function fetch_array() on a non-object in /home/langsyst/public_html/Lansco/Fix_Data_2A.php on line 58

Line 58 is the 2nd while
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