/**
* Instantiate class
*
* @param Child $child
*/
public function __construct(Child $child)
{
$this->child = $child;
$this->startOfWeek = start_of_week();
$this->endOfWeek = end_of_week();
$this->generateWeekDays();
}
function grouped_stats($period_length, $period_count)
{
$now = time();
$week0 = start_of_week($now);
$weeks = array();
for ($i = $period_count; $i >= 0; $i--) {
$week = new stdClass();
$week->start = advance_period($period_length, $week0, -$i);
$week->end = advance_period($period_length, $week->start, 1);
// + $period_length * 24 * 60 * 60;
$week->start_fmt = strftime('%b %d', $week->start);
$week->period_fmt = strftime('%b %d', $week->start) . ' – ' . strftime('%b %d', $week->end);
$week->stats = index_by_field('ip', stats_before(min($now, $week->end)));
foreach ($week->stats as $ip => &$row) {
if ($row->age < TRIAL_PERIOD) {
$row->status = STATUS_TRIAL;
} else {
if ($row->inactive_period > INACTIVITY_CUTOFF || $row->inactive_period > $row->active_period) {
$row->status = STATUS_INACTIVE;
} else {
$row->status = STATUS_ACTIVE;
}
}
}
$weeks[] = $week;
}
foreach ($weeks as &$week) {
if (!empty($last_week)) {
$week->active_user_count = 0;
$week->new_users = array();
$week->gone_users = array();
$week->trial_users = array();
$week->users_this_week = 0;
foreach ($week->stats as $ip => $row) {
if ($row->inactive_period < $period_length) {
$week->users_this_week++;
}
}
foreach ($week->stats as $ip => $row) {
$prev_row = $last_week->stats[$ip];
if ($row->status == STATUS_ACTIVE) {
++$week->active_user_count;
if (empty($prev_row) || $prev_row->status != STATUS_ACTIVE) {
$week->new_users[] = $ip;
}
}
}
foreach ($last_week->stats as $ip => $prev_row) {
$row = $week->stats[$ip];
if ($prev_row->status == STATUS_ACTIVE) {
if (empty($row) || $row->status != STATUS_ACTIVE) {
$week->gone_users[] = $ip;
}
}
}
$week->trial_fresh = 0;
$week->trial_good = 0;
$week->trial_bad = 0;
foreach ($week->stats as $ip => $row) {
if ($row->status == STATUS_TRIAL) {
$week->trial_users[] = $ip;
if ($row->age <= 3) {
$week->trial_fresh++;
} else {
if ($row->active_period > $row->inactive_period) {
$week->trial_good++;
} else {
$week->trial_bad++;
}
}
}
}
$week->trial_count = count($week->trial_users);
$week->new_user_count = count($week->new_users);
$week->gone_user_count = count($week->gone_users);
$week->growth = $last_week->active_user_count > 0 ? (double) $week->active_user_count / $last_week->active_user_count - 1 : 0;
$week->growth_fmt = round($week->growth * 100) . '%';
$week->delta = $week->active_user_count - $last_week->active_user_count;
$week->new_user_growth = $last_week->new_user_count > 0 ? (double) $week->new_user_count / $last_week->new_user_count - 1 : 0;
$week->new_user_growth_fmt = round($week->new_user_growth * 100) . '%';
$week->churn = $last_week->active_user_count > 0 ? (double) $week->gone_user_count / $last_week->active_user_count : 0;
$week->churn_fmt = round($week->churn * 100) . '%';
}
$last_week = $week;
}
array_shift($weeks);
// remove the first week, it was only used to compute futher stats
return $weeks;
}