function bumpStudentClass($sid, $n)
{
// get the student's group id
$group_id = gidFromSid($sid);
assert($group_id != 0);
//dbg("group_id=$group_id");
// get his current (old) class
$oldclass = classForStudent($sid);
assert($oldclass != 0);
//dbg("oldclass=$oldclass");
// compute his desired (new) class
$newclass = $oldclass + $n;
// wrap if necessary
if ($newclass < 3) {
$newclass = 6;
}
if ($newclass > 6) {
$newclass = 3;
}
//dbg("newclass=$newclass");
// get id of student (if any) that already has the desired class
$othersid = sidFromGidAndClass($group_id, $newclass);
//dbg("othersid=$othersid");
// remove both students from group entirely
if ($othersid != 0) {
rmStudentFromGroup($othersid);
}
rmStudentFromGroup($sid);
// re-add students using swapped class numbers
assignStudentToGroupAndClass($sid, $group_id, $newclass);
if ($othersid != 0) {
assignStudentToGroupAndClass($othersid, $group_id, $oldclass);
}
}
<?php
$gid = gidFromSid($id);
dbg("id={$id}");
dbg("gid={$gid}");
$sql = "select id, last_name as ln from users where active=1 and group_id={$gid} and user_type='s'";
$rs = dbExec($sql);
$rc = $rs->RecordCount();
dbg("rc={$rc}");
assert($rc >= 1 && $rc <= 4);
$add = 0;
$avg = 0;
$tot = 0;
for ($i = 0; $i < 4; $i++) {
if ($i < $rc) {
$stid = $rs->fields[0];
$name = $rs->fields[1];
$sttr = tracking_rec($stid);
$rm = $sttr["raisedmoney"];
$tot += $rm;
$add += $rm;
$avg = $add / ($i + 1);
$rs->MoveNext();
dbg("name={$name} stid={$stid} rm={$rm} tot={$tot} add={$add} avg={$avg}");
} else {
$tot += $avg;
dbg("(no one) tot={$tot} ({$tot} + {$avg})");
}
}
dbg("final tot={$tot}");
$raisedbyteam = (int) $tot;
