Proyectos de Subversion Moodle

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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * Mysqli specific recordset.
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 *
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 * @package    core_dml
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 * @copyright  2008 Petr Skoda (http://skodak.org)
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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defined('MOODLE_INTERNAL') || die();
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require_once(__DIR__.'/moodle_recordset.php');
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/**
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 * Mysqli specific moodle recordset class
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 *
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 * @package    core
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 * @subpackage dml_driver
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 * @copyright  2008 Petr Skoda (http://skodak.org)
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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class mysqli_native_moodle_recordset extends moodle_recordset {
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    protected $result;
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    protected $current;
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    public function __construct($result) {
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        $this->result  = $result;
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        $this->current = $this->fetch_next();
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    }
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    public function __destruct() {
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        $this->close();
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    }
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    private function fetch_next() {
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        if (!$this->result) {
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            return false;
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        }
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        if (!$row = $this->result->fetch_assoc()) {
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            $this->result->close();
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            $this->result = null;
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            return false;
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        }
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        $row = array_change_key_case($row, CASE_LOWER);
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        return $row;
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    }
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    public function current(): stdClass {
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        return (object)$this->current;
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    }
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    #[\ReturnTypeWillChange]
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    public function key() {
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        // return first column value as key
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        if (!$this->current) {
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            return false;
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        }
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        $key = reset($this->current);
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        return $key;
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    }
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    public function next(): void {
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        $this->current = $this->fetch_next();
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    }
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    public function valid(): bool {
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        return !empty($this->current);
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    }
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    public function close() {
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        if ($this->result) {
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            $this->result->close();
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            $this->result  = null;
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        }
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        $this->current = null;
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    }
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}