ibase_num_fields

<?php
       $dbh = ibase_connect ($host, $username, $password);
       $stmt = 'SELECT * FROM tblname';
       $sth = ibase_query ($dbh, $stmt);

       if (ibase_num_fields($sth) > 0) {
       while ($row = ibase_fetch_object ($sth)) {
       print $row->email . "\n";
       }
       } else {
       die ("No Results were found for your query");
       }

       ibase_close ($dbh);
       ?>