class.ilBookingPreferences.php

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<?php

class ilBookingPreferences
{
    protected array $preferences;

    public function __construct(array $preferences)
    {
        $this->preferences = [];
        foreach ($preferences as $user_id => $obj_ids) {
            if ($user_id > 0 && is_array($obj_ids)) {
                foreach ($obj_ids as $obj_id) {
                    if (!isset($this->preferences[$user_id]) || !in_array($obj_id, $this->preferences[$user_id])) {
                        $this->preferences[$user_id][] = (int) $obj_id;
                    }
                }
            }
        }
    }

    public function getPreferences(): array
    {
        return $this->preferences;
    }
}