mySQL question

[mvolmar at fruitlands.org (Mike Volmar)]

Hi,

In my book "PHP and mySQL Web Development" listing 10.2 has a line of code:

$num_results = mysql_num_rows($result);

that throws an error on linux but not on windows machine.
error=Warning: Supplied argument is not a valid MySQL result resource

Code runs fine on php-triad in windows but mySQL under redhat 7.3 throws the
error.
Here is entire code of the example.

<?

  @ $db = mysql_pconnect("localhost");  // I'm thinking this may be wrong

  if (!$db)
  {
     echo "Error: Could not connect to database.  Please try again later.";
     exit;
  }

  mysql_select_db("events");
  $query = "select * from events";
  $result = mysql_query($query);

  $num_results = mysql_num_rows($result);  // this line throws error

  echo "<p>Events found: ".$num_results."</p>";

  for ($i=0; $i <$num_results; $i++)
  {
     $row = mysql_fetch_array($result);
     echo "<p><strong>".($i+1).". Title: ";
     echo stripslashes($row["title"]);
     echo "</strong><br>Time: ";
     echo stripslashes($row["time"]);
     echo "<br>Date: ";
     echo stripslashes($row["date"]);
     echo "<br>Speaker: ";
     echo stripslashes($row["speaker"]);
     echo "<br>Description: ";
     echo stripslashes($row["review"]);
     echo "<br>EID: ";
     echo stripslashes($row["eid"]);
     echo "</p>";
  }

?>

Any help appreciated.

Mike Volmar

***************************************************
Michael Volmar, PhD
Curator
Fruitlands Museums
102 Prospect Hill Road
Harvard, MA  01451

978-456-3924x228 (tel)

mvolmar at fruitlands.org
http://www.fruitlands.org
****************************************************