chat_functions.lib.php 4.3 KB

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  1. <?php
  2. /*
  3. ==============================================================================
  4. Dokeos - elearning and course management software
  5. Copyright (c) 2004-2008 Dokeos SPRL
  6. Copyright (c) 2003 Ghent University (UGent)
  7. Copyright (c) 2001 Universite catholique de Louvain (UCL)
  8. Copyright (c) various contributors
  9. For a full list of contributors, see "credits.txt".
  10. The full license can be read in "license.txt".
  11. This program is free software; you can redistribute it and/or
  12. modify it under the terms of the GNU General Public License
  13. as published by the Free Software Foundation; either version 2
  14. of the License, or (at your option) any later version.
  15. See the GNU General Public License for more details.
  16. Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
  17. Mail: info@dokeos.com
  18. ==============================================================================
  19. */
  20. /**
  21. * @author isaac flores paz
  22. * @param integer
  23. * @return void
  24. */
  25. function exit_of_chat ($user_id) {
  26. $list_course=array();
  27. $list_course=CourseManager::get_courses_list_by_user_id($user_id);
  28. $group_id = intval($_SESSION['id_group']);
  29. $session_id = intval($_SESSION['id_session']);
  30. $extra_condition = '';
  31. if (!empty($group_id)) $extra_condition = " AND to_group_id = '$group_id'";
  32. else $extra_condition = api_get_session_condition($session_id);
  33. foreach($list_course as $courses) {
  34. $response=user_connected_in_chat($user_id,$courses['db_name']);
  35. if ($response===true) {
  36. $tbl_chat_connected = Database::get_course_chat_connected_table($courses['db_name']);;
  37. $sql='DELETE FROM '.$tbl_chat_connected.' WHERE user_id='.$user_id.$extra_condition;
  38. Database::query($sql,__FILE__,__LINE__);
  39. }
  40. }
  41. }
  42. /**
  43. * @author isaac flores paz
  44. * @param integer the user id
  45. * @param string the database name
  46. * @return boolean
  47. */
  48. function user_connected_in_chat ($user_id,$database_name) {
  49. $tbl_chat_connected = Database::get_course_chat_connected_table($database_name);
  50. $group_id = intval($_SESSION['id_group']);
  51. $session_id = intval($_SESSION['id_session']);
  52. $extra_condition = '';
  53. if (!empty($group_id)) $extra_condition = " AND to_group_id = '$group_id'";
  54. else $extra_condition = api_get_session_condition($session_id);
  55. $sql='SELECT COUNT(*) AS count FROM '.$tbl_chat_connected .' c WHERE user_id='.$user_id.$extra_condition;
  56. $result = Database::query($sql,__FILE__,__LINE__);
  57. $count = Database::fetch_array($result,'ASSOC');
  58. if (1==$count['count']) {
  59. return true;
  60. } else {
  61. return false;
  62. }
  63. }
  64. /**
  65. * @param void
  66. * @return void
  67. */
  68. function disconnect_user_of_chat () {
  69. $list_info_user_in_chat = array();
  70. $list_info_user_in_chat = users_list_in_chat ();
  71. $cd_date = date('Y-m-d',time());
  72. $cdate_h = date('H',time());
  73. $cdate_m = date('i',time());
  74. $cdate_s = date('s',time());
  75. $cd_count_time_seconds=$cdate_h*3600 + $cdate_m*60 + $cdate_s;
  76. foreach ($list_info_user_in_chat as $list_info_user) {
  77. $date_db_date = date('Y-m-d',strtotime($list_info_user['last_connection']));
  78. $date_db_h = date('H',strtotime($list_info_user['last_connection']));
  79. $date_db_m = date('i',strtotime($list_info_user['last_connection']));
  80. $date_db_s = date('s',strtotime($list_info_user['last_connection']));
  81. $date_count_time_seconds=$date_db_h*3600 + $date_db_m*60 + $date_db_s;
  82. if ($cd_date==$date_db_date) {
  83. if (($cd_count_time_seconds - $date_count_time_seconds)>5) {
  84. $tbl_chat_connected = Database::get_course_chat_connected_table();
  85. $sql='DELETE FROM '.$tbl_chat_connected.' WHERE user_id='.$list_info_user['user_id'];
  86. Database::query($sql,__FILE__,__LINE__);
  87. }
  88. }
  89. }
  90. }
  91. /**
  92. * @param void
  93. * @return array user list in chat
  94. */
  95. function users_list_in_chat () {
  96. $list_users_in_chat=array();
  97. $tbl_chat_connected = Database::get_course_chat_connected_table();
  98. $group_id = intval($_SESSION['id_group']);
  99. $session_id = intval($_SESSION['id_session']);
  100. $extra_condition = '';
  101. if (!empty($group_id)) $extra_condition = " WHERE to_group_id = '$group_id'";
  102. else $extra_condition = api_get_session_condition($session_id,false);
  103. $sql='SELECT user_id,last_connection FROM '.$tbl_chat_connected.$extra_condition;
  104. $result=Database::query($sql,__FILE__,__LINE__);
  105. while ($row = Database::fetch_array($result,'ASSOC')) {
  106. $list_users_in_chat[]=$row;
  107. }
  108. return $list_users_in_chat;
  109. }
  110. ?>