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Differences Between: [Versions 311 and 401] [Versions 311 and 402] [Versions 311 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Mysqli specific recordset.
  19   *
  20   * @package    core_dml
  21   * @copyright  2008 Petr Skoda (http://skodak.org)
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  defined('MOODLE_INTERNAL') || die();
  26  
  27  require_once (__DIR__.'/moodle_recordset.php');
  28  
  29  /**
  30   * Mysqli specific moodle recordset class
  31   *
  32   * @package    core
  33   * @subpackage dml_driver
  34   * @copyright  2008 Petr Skoda (http://skodak.org)
  35   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  36   */
  37  class mysqli_native_moodle_recordset extends moodle_recordset {
  38  
  39      protected $result;
  40      protected $current;
  41  
  42      public function __construct($result) {
  43          $this->result  = $result;
  44          $this->current = $this->fetch_next();
  45      }
  46  
  47      public function __destruct() {
  48          $this->close();
  49      }
  50  
  51      private function fetch_next() {
  52          if (!$this->result) {
  53              return false;
  54          }
  55          if (!$row = $this->result->fetch_assoc()) {
  56              $this->result->close();
  57              $this->result = null;
  58              return false;
  59          }
  60  
  61          $row = array_change_key_case($row, CASE_LOWER);
  62          return $row;
  63      }
  64  
  65      public function current() {
  66          return (object)$this->current;
  67      }
  68  
  69      public function key() {
  70          // return first column value as key
  71          if (!$this->current) {
  72              return false;
  73          }
  74          $key = reset($this->current);
  75          return $key;
  76      }
  77  
  78      public function next() {
  79          $this->current = $this->fetch_next();
  80      }
  81  
  82      public function valid() {
  83          return !empty($this->current);
  84      }
  85  
  86      public function close() {
  87          if ($this->result) {
  88              $this->result->close();
  89              $this->result  = null;
  90          }
  91          $this->current = null;
  92      }
  93  }