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Differences Between: [Versions 310 and 401] [Versions 310 and 402] [Versions 310 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   * Experimental pdo recordset
  19   *
  20   * @package    core_dml
  21   * @copyright  2008 Andrei Bautu
  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   * Experimental pdo recordset
  31   *
  32   * @package    core_dml
  33   * @copyright  2008 Andrei Bautu
  34   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class pdo_moodle_recordset extends moodle_recordset {
  37  
  38      private $sth;
  39      protected $current;
  40  
  41      public function __construct($sth) {
  42          $this->sth = $sth;
  43          $this->sth->setFetchMode(PDO::FETCH_ASSOC);
  44          $this->current = $this->fetch_next();
  45      }
  46  
  47      public function __destruct() {
  48          $this->close();
  49      }
  50  
  51      private function fetch_next() {
  52          if ($row = $this->sth->fetch()) {
  53              $row = array_change_key_case($row, CASE_LOWER);
  54          }
  55          return $row;
  56      }
  57  
  58      public function current() {
  59          return (object)$this->current;
  60      }
  61  
  62      public function key() {
  63          // return first column value as key
  64          if (!$this->current) {
  65              return false;
  66          }
  67          $key = reset($this->current);
  68          return $key;
  69      }
  70  
  71      public function next() {
  72          $this->current = $this->fetch_next();
  73      }
  74  
  75      public function valid() {
  76          return !empty($this->current);
  77      }
  78  
  79      public function close() {
  80          if ($this->sth) {
  81              $this->sth->closeCursor();
  82              $this->sth = null;
  83          }
  84          $this->current = null;
  85      }
  86  }