Fatal error: Call to undefined function: numrows() in ... - is this a bug or just a typo in my script?

hi, i am new to pear and i like it because lesser code is written, but i had a problem with getting the number of rows returned, which says: Fatal error: Call to undefined function: numrows() in /usr/share/pear/.../myFile.php on line 80 in my php.ini file i have already uncommented the include for unix and i added /usr/share/pear... it looks like this: include_path = ".:/php/includes:/usr/share/pear" now, myFile.php contains include_once(DB.php) above. i have connected successfully to my database and have inserted a row. when i used the SELECT statement in the query() function, i cannot verify the number of rows returned. all i get is the fatal error above. $var = $db -> query("SELECT...");

   if($var -> numRows() == 0) {         // this is line 80
      // ... some php code

} i tried to used a simple echo and i still got the error... $var = $db -> query("SELECT...");

   echo $var -> numRows();                 // this is line 80

is this a bug or have i just left something out? thanks...