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Differences Between: [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * @package    moodlecore
  20   * @subpackage backup-helper
  21   * @copyright  2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  /**
  26   * Implementation of iterator interface to work with common arrays
  27   *
  28   * This class implements the iterator interface in order to provide one
  29   * common API to be used in backup and restore when, within the same code,
  30   * both database recordsets (already iteratorors) and arrays of information
  31   * are used.
  32   *
  33   * TODO: Finish phpdocs
  34   */
  35  class backup_array_iterator implements iterator {
  36  
  37      private $arr;
  38  
  39      public function __construct(array $arr) {
  40          $this->arr = $arr;
  41      }
  42  
  43      public function rewind() {
  44          return reset($this->arr);
  45      }
  46  
  47      public function current() {
  48          return current($this->arr);
  49      }
  50  
  51      public function key() {
  52          return key($this->arr);
  53      }
  54  
  55      public function next() {
  56          return next($this->arr);
  57      }
  58  
  59      public function valid() {
  60          return key($this->arr) !== null;
  61      }
  62  
  63      public function close() { // Added to provide compatibility with recordset iterators
  64          reset($this->arr); // Just reset the array
  65      }
  66  }