[svn r11842] update the list of students in a course : if we fill the param $session_id, only the students of this session will be listed

main/inc/lib/course.lib.php

@@ -1047,25 +1047,32 @@ class CourseManager
 	*	@param boolean $full list to true if we want sessions students too
 	*	@return array with user id
 	*/
-	function get_student_list_from_course_code($course_code, $full_list=false)
+	function get_student_list_from_course_code($course_code, $with_session=false, $session_id=0)
 	{
 		$a_students = array();
 		
-		// students directly subscribed to the course
-		$table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
-		$sql_query = "SELECT user_id FROM $table WHERE `course_code` = '$course_code' AND `status` = 5";
-		$rs = api_sql_query($sql_query, __FILE__, __LINE__);
-		while($student = mysql_fetch_array($rs))
+		$session_id = intval($session_id);
+		
+		if($session_id == 0)
 		{
-			$a_students[$student['user_id']] = $student['user_id']; 
+			// students directly subscribed to the course
+			$table = Database :: get_main_table(TABLE_MAIN_COURSE_USER);
+			$sql_query = "SELECT user_id FROM $table WHERE `course_code` = '$course_code' AND `status` = 5";
+			$rs = api_sql_query($sql_query, __FILE__, __LINE__);
+			while($student = mysql_fetch_array($rs))
+			{
+				$a_students[$student['user_id']] = $student['user_id']; 
+			}
 		}
 		
 		// students subscribed to the course through a session
 		
-		if(api_get_setting('use_session_mode')=='true' && $full_list)
+		if(api_get_setting('use_session_mode')=='true' && $with_session)
 		{
 			$table = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
 			$sql_query = "SELECT DISTINCT id_user as user_id FROM $table WHERE `course_code` = '$course_code'";
+			if($session_id!=0)
+				$sql_query .= ' AND id_session = '.$session_id;
 			$rs = api_sql_query($sql_query, __FILE__, __LINE__);
 			while($student = mysql_fetch_array($rs))
 			{