public static function nearestContacts($how_many = 5, $target = NULL)
{
/* returns a multidimensional array of x contacts, sorted by distance from target, containing an innter array of details */
if (isset($target)) {
// set up variables
$distance_array = array();
// grab all registered users from db
require_once __DIR__ . '/Database.php';
$days_of_week = array(1 => 'mondays', 2 => 'tuesdays', 3 => 'wednesdays', 4 => 'thursdays', 5 => 'fridays', 6 => 'saturdays', 7 => 'sundays');
// set variabe for earliest_time field corresponding to 'today'
$earliest_time_today = 'earliest_time_' . $days_of_week[current_time(date('N', time()))];
$latest_time_today = 'latest_time_' . $days_of_week[current_time(date('N', time()))];
$result_set = \ZwsContactsDatabase\Database::getAllRecordsWhereIsNot('id', array('field' => $earliest_time_today, 'value' => 'UNAVL'));
// loop postcodes and get distances
if (!empty($result_set) && $result_set !== false && is_array($result_set)) {
foreach ($result_set as $key => $row) {
// get distance from contact to each target. Returns false if error or target not found.
$distance = \ZwsContactsDatabase\DistanceCalculator::getDistance(sanitize_text_field($target), sanitize_text_field($row->postcode));
// if distance successfully returned add to the distance array
if ($distance !== false) {
$distance_array[sanitize_text_field($row->id)] = array('distance' => $distance, 'postcode' => sanitize_text_field($row->postcode), 'lng' => sanitize_text_field($row->lng), 'lat' => sanitize_text_field($row->lat), 'first_name' => sanitize_text_field($row->first_name), 'last_name' => sanitize_text_field($row->last_name), 'phone' => sanitize_text_field($row->phone), 'email' => sanitize_email($row->email), $earliest_time_today => sanitize_text_field($row->{$earliest_time_today}), $latest_time_today => sanitize_text_field($row->{$latest_time_today}), 'max_radius' => sanitize_text_field($row->max_radius), 'extra_info' => esc_textarea($row->extra_info));
}
}
if (!empty($distance_array)) {
$top_n = [];
$c = 0;
foreach ($distance_array as $key => $value) {
// if within max radius, and available, and within requested size of resultset
if (apply_filters('zws_filter_enforce_numeric', $value['distance']) <= apply_filters('zws_filter_enforce_numeric', $value['max_radius']) && $c < $how_many) {
// add the id to the actual dataset, at it will no longer be available as the key
$value['id'] = sanitize_text_field($key);
$top_n[$c] = $value;
$c++;
}
}
return $top_n;
}
}
return false;
}
}
