From c8c9cb7bb7a14643e4ebba7688f8de93deaa23ec Mon Sep 17 00:00:00 2001
From: stronk7 <stronk7>
Date: Thu, 4 Sep 2003 22:08:06 +0000
Subject: [PATCH] Included chat_get_participants() function.

---
 mod/chat/lib.php | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/mod/chat/lib.php b/mod/chat/lib.php
index c5539a4551..20919684a5 100644
--- a/mod/chat/lib.php
+++ b/mod/chat/lib.php
@@ -545,4 +545,21 @@ function chat_format_message($message, $courseid=0) {
 
 }
 
+function chat_get_participants($chatid) {
+//Returns the users with data in one chat
+//(users with records in chat_messages, students)
+
+    global $CFG;
+
+    //Get students
+    $students = get_records_sql("SELECT DISTINCT u.*
+                                 FROM {$CFG->prefix}user u,
+                                      {$CFG->prefix}chat_messages c
+                                 WHERE c.chatid = '$chatid' and
+                                       u.id = c.userid");
+
+    //Return students array (it contains an array of unique users)
+    return ($students);
+}
+
 ?>
-- 
2.39.5