<?php

$query = "SELECT class_program, count(*) AS num FROM classes WHERE school_num = $school_num AND entry_type = 'Class' GROUP BY 1";
$results = db_query($query);
while ($row = db_fetch_assoc($results)) {
   extract($row);
   if (isset($class_program) && intval($class_program) > 0) {
      $query = "UPDATE class_programs SET member_count = $num WHERE school_num = $school_num AND record_num = $class_program";
      db_query($query);
   }
}
?>