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See Release Notes

  • Bug fixes for general core bugs in 4.0.x will end 8 May 2023 (12 months).
  • Bug fixes for security issues in 4.0.x will end 13 November 2023 (18 months).
  • PHP version: minimum PHP 7.3.0 Note: the minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is also supported.
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * This file defines the userlist_collection class object.
 *
 * The userlist_collection is used to organize a collection of userlists.
 *
 * @package core_privacy
 * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
namespace core_privacy\local\request;

defined('MOODLE_INTERNAL') || die();

/**
 * A collection of userlist items.
 *
 * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class userlist_collection implements \Iterator, \Countable {

    /**
     * @var \context $context The context that the userlist collection belongs to.
     */
    protected $context = null;

    /**
     * @var array $userlists the internal array of userlist objects.
     */
    protected $userlists = [];

    /**
     * @var int Current position of the iterator.
     */
    protected $iteratorposition = 0;

    /**
     * Constructor to create a new userlist_collection.
     *
     * @param   \context    $context The context to which this collection belongs.
     */
    public function __construct(\context $context) {
        $this->context = $context;
    }

    /**
     * Return the context that this collection relates to.
     *
     * @return  int
     */
    public function get_context() : \context {
        return $this->context;
    }

    /**
     * Add a userlist to this collection.
     *
     * @param   userlist_base $userlist the userlist to export.
     * @return  $this
     */
    public function add_userlist(userlist_base $userlist) : userlist_collection {
        $component = $userlist->get_component();
        if (isset($this->userlists[$component])) {
            throw new \moodle_exception("A userlist has already been added for the '{$component}' component");
        }

        $this->userlists[$component] = $userlist;

        return $this;
    }

    /**
     * Get the userlists in this collection.
     *
     * @return  array   the associative array of userlists in this collection, indexed by component name.
     * E.g. mod_assign => userlist, core_comment => userlist.
     */
    public function get_userlists() : array {
        return $this->userlists;
    }

    /**
     * Get the userlist for the specified component.
     *
     * @param   string      $component the frankenstyle name of the component to fetch for.
     * @return  userlist_base|null
     */
    public function get_userlist_for_component(string $component) {
        if (isset($this->userlists[$component])) {
            return $this->userlists[$component];
        }

        return null;
    }

    /**
     * Return the current contexlist.
     *
     * @return  \user
     */
> #[\ReturnTypeWillChange]
public function current() { $key = $this->get_key_from_position(); return $this->userlists[$key]; } /** * Return the key of the current element. * * @return mixed */
> #[\ReturnTypeWillChange]
public function key() { return $this->get_key_from_position(); } /** * Move to the next user in the list. */
< public function next() {
> public function next(): void {
++$this->iteratorposition; } /** * Check if the current position is valid. * * @return bool */
< public function valid() {
> public function valid(): bool {
return ($this->iteratorposition < count($this->userlists)); } /** * Rewind to the first found user. * * The list of users is uniqued during the rewind. * The rewind is called at the start of most iterations. */
< public function rewind() {
> public function rewind(): void {
$this->iteratorposition = 0; } /** * Get the key for the current iterator position. * * @return string */ protected function get_key_from_position() { $keylist = array_keys($this->userlists); if (isset($keylist[$this->iteratorposition])) { return $keylist[$this->iteratorposition]; } return null; } /** * Return the number of users. */
< public function count() {
> public function count(): int {
return count($this->userlists); } }