[svn r15010] Minor - Warning avoided

main/mySpace/myStudents.php

@@ -1,4 +1,4 @@
-<?php //$Id: myStudents.php 14945 2008-04-17 21:53:37Z juliomontoya $
+<?php //$Id: myStudents.php 15010 2008-04-22 16:16:13Z juliomontoya $
 /*
 ==============================================================================
 	Dokeos - elearning and course management software
@@ -107,8 +107,6 @@ Display :: display_header($nameTools);
   * ======================================================================================
   */
   
-
-
 function calculHours($seconds)
 {
 	
@@ -465,9 +463,10 @@ if(!empty($_GET['student']))
 							AND session_course_user.course_code = "'.Database::escape_string($_GET['course']).'"
 							ORDER BY id_session DESC';
 					$rs = api_sql_query($sql,__FILE__,__LINE__);
-					
+					$num_row=Database::num_rows($rs);
+					if ($num_row > 0) 
+					{
 					$le_session_id = intval(Database::result($rs,0,0));					
-					
 						if($le_session_id>0)
 						{
 							// get session name and coach of the session
@@ -495,6 +494,7 @@ if(!empty($_GET['student']))
 								$a_infosCours['tutor_name'] = $coach_infos['firstname'].' '.$coach_infos['lastname'];
 							}
 						}
+					}
 				} // end if(api_get_setting('use_session_mode')=='true')