diff --git a/main/coursecopy/copy_course_session.php b/main/coursecopy/copy_course_session.php
index 82eb430c28..3ee6c32aad 100755
--- a/main/coursecopy/copy_course_session.php
+++ b/main/coursecopy/copy_course_session.php
@@ -3,6 +3,7 @@
 
 use Chamilo\CourseBundle\Component\CourseCopy\CourseSelectForm;
 use Chamilo\CourseBundle\Component\CourseCopy\CourseBuilder;
+use Chamilo\CourseBundle\Component\CourseCopy\CourseRestorer;
 
 /**
  * Copy resources from one course in a session to another one.
@@ -14,7 +15,7 @@ use Chamilo\CourseBundle\Component\CourseCopy\CourseBuilder;
 
 $cidReset = true;
 require_once '../inc/global.inc.php';
-$current_course_tool  = TOOL_COURSE_MAINTENANCE;
+$current_course_tool = TOOL_COURSE_MAINTENANCE;
 
 api_protect_global_admin_script();
 api_protect_limit_for_session_admin();
@@ -91,7 +92,6 @@ function display_form()
         Display::return_icon('back.png', get_lang('BackTo').' '.get_lang('PlatformAdmin'), '', ICON_SIZE_MEDIUM).
         '</a>';
 
-
     $html .= Display::toolbarAction('toolbar-copysession', array(0 => $actionsLeft));
 
     $html .= Display::return_message(get_lang('CopyCourseFromSessionToSessionExplanation'), 'warning');
@@ -132,7 +132,6 @@ function display_form()
     // Add Security token
     $html .= '<input type="hidden" value="' . Security::get_token() . '" name="sec_token">';
     $html .= '</div></div>';
-
     $html .= '</form>';
 
     echo $html;
@@ -158,8 +157,8 @@ function search_courses($id_session, $type)
             }
 
             $return .= '</select>';
-            $_SESSION['course_list']     = $temp_course_list;
-            $_SESSION['session_origin']  = $id_session;
+            $_SESSION['course_list'] = $temp_course_list;
+            $_SESSION['session_origin'] = $id_session;
 
             // Build select for destination sessions where is not included current session from select origin
             if (!empty($id_session)) {
diff --git a/main/coursecopy/copy_course_session_selected.php b/main/coursecopy/copy_course_session_selected.php
index 0cc579dea8..acce4e2ad2 100644
--- a/main/coursecopy/copy_course_session_selected.php
+++ b/main/coursecopy/copy_course_session_selected.php
@@ -3,6 +3,7 @@
 
 use Chamilo\CourseBundle\Component\CourseCopy\CourseSelectForm;
 use Chamilo\CourseBundle\Component\CourseCopy\CourseBuilder;
+use Chamilo\CourseBundle\Component\CourseCopy\CourseRestorer;
 
 /**
  * Copy resources from one course in a session to another one.
@@ -46,9 +47,7 @@ if (function_exists('ini_set')) {
 
 $this_section = SECTION_COURSES;
 $nameTools = get_lang('CopyCourse');
-$returnLink = api_get_path(
-        WEB_CODE_PATH
-    ) . 'course_info/maintenance_coach.php?' . api_get_cidreq();
+$returnLink = api_get_path(WEB_CODE_PATH) . 'course_info/maintenance_coach.php?' . api_get_cidreq();
 $interbreadcrumb[] = array(
     'url' => $returnLink,
     'name' => get_lang('Maintenance')
@@ -383,10 +382,12 @@ if ((isset($_POST['action']) && $_POST['action'] == 'course_select_form') ||
 
         echo '<div style="float:right"><a href="javascript:window.history.go(-1);">' .
             Display::return_icon(
-                'back.png', get_lang('Back') . ' ' . get_lang('To') . ' ' . get_lang(
+                'back.png',
+                get_lang('Back').' '.get_lang('To').' '.get_lang(
                     'PlatformAdmin'
-                ), array('style' => 'vertical-align:middle')
-            ) .
+                ),
+                array('style' => 'vertical-align:middle')
+            ).
             get_lang('Back') . '</a></div>';
     } else {
         Display::display_error_message(
diff --git a/src/Chamilo/CourseBundle/Component/CourseCopy/Course.php b/src/Chamilo/CourseBundle/Component/CourseCopy/Course.php
index e19caa7ba9..557c461ef3 100644
--- a/src/Chamilo/CourseBundle/Component/CourseCopy/Course.php
+++ b/src/Chamilo/CourseBundle/Component/CourseCopy/Course.php
@@ -3,6 +3,8 @@
 
 namespace Chamilo\CourseBundle\Component\CourseCopy;
 
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Resource;
+
 /**
  * A course-object to use in Export/Import/Backup/Copy
  * @author Bart Mollet <bart.mollet@hogent.be>
@@ -37,7 +39,7 @@ class Course
         foreach ($this->resources as $type => $resources) {
             if (is_array($resources)) {
                 foreach ($resources as $resource) {
-                    Coursecopy\Resource::setClassType($resource);
+                    Resource::setClassType($resource);
                     if ($resource->links_to($resource_to_check) ) {
                         return true;
                     }
@@ -175,12 +177,12 @@ class Course
                             $description = $resource->content;
                             break;
                         case RESOURCE_THEMATIC:
-                            $title 			= $resource->title;
-                            $description 	= $resource->content;
+                            $title = $resource->title;
+                            $description = $resource->content;
                             break;
                         case RESOURCE_ATTENDANCE:
-                            $title 			= $resource->params['name'];
-                            $description 	= $resource->params['description'];
+                            $title = $resource->params['name'];
+                            $description = $resource->params['description'];
                             break;
                         case RESOURCE_WORK:
                             $title = $resource->title;
diff --git a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseArchiver.php b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseArchiver.php
index 642830f777..703658dd58 100644
--- a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseArchiver.php
+++ b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseArchiver.php
@@ -3,8 +3,6 @@
 
 namespace Chamilo\CourseBundle\Component\CourseCopy;
 
-use Chamilo\CourseBundle\Component\CourseCopy\Course;
-
 /**
  * Some functions to write a course-object to a zip-file and to read a course-
  * object from such a zip-file.
diff --git a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseBuilder.php b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseBuilder.php
index 88ef532bd7..896801c12e 100644
--- a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseBuilder.php
+++ b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseBuilder.php
@@ -3,11 +3,38 @@
 
 namespace Chamilo\CourseBundle\Component\CourseCopy;
 
-use Chamilo\CourseBundle\Component\CourseCopy\Resources\GradeBookBackup;
-use Chamilo\CourseBundle\Component\CourseCopy\Resources\QuizQuestion;
 use Database;
 use TestCategory;
 use Category;
+use CourseManager;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Announcement;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Attendance;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\CalendarEvent;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\CourseCopyLearnpath;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\CourseCopyTestcategory;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\CourseDescription;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\CourseSession;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Document;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\DummyCourseCreator;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Forum;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\ForumCategory;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\ForumPost;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\ForumTopic;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Glossary;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\GradeBookBackup;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Link;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\LinkCategory;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Quiz;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\QuizQuestion;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\QuizQuestionOption;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\ScormDocument;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Survey;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\SurveyInvitation;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\SurveyQuestion;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Thematic;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\ToolIntro;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Wiki;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Work;
 
 /**
  * Class CourseBuilder
@@ -784,7 +811,7 @@ class CourseBuilder
                 'title' => get_lang('OrphanQuestions', ''),
                 'type' => 2
             );
-            $newQuiz = new Quiz((object)$obj);
+            $newQuiz = new Quiz((object) $obj);
             if (!empty($orphanQuestionIds)) {
                 foreach ($orphanQuestionIds as $index => $orphanId) {
                     $order = $index + 1;
@@ -944,7 +971,8 @@ class CourseBuilder
      * Build the Survey Questions
      * @param int $courseId Internal course ID
      */
-    public function build_survey_questions($courseId) {
+    public function build_survey_questions($courseId)
+    {
         $table_que = Database :: get_course_table(TABLE_SURVEY_QUESTION);
         $table_opt = Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION);
 
@@ -1129,7 +1157,7 @@ class CourseBuilder
 
         $db_result = Database::query($sql);
         while ($obj = Database::fetch_object($db_result)) {
-            $cd = new \Coursecopy\CourseDescription(
+            $cd = new CourseDescription(
                 $obj->id,
                 $obj->title,
                 $obj->content,
diff --git a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRecycler.php b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRecycler.php
index e34a721421..2739052168 100644
--- a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRecycler.php
+++ b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRecycler.php
@@ -3,6 +3,9 @@
 
 namespace Chamilo\CourseBundle\Component\CourseCopy;
 
+use Database;
+use TestCategory;
+
 /**
  * Class to delete items from a Chamilo-course
  * @author Bart Mollet <bart.mollet@hogent.be>
@@ -44,12 +47,11 @@ class CourseRecycler
             return false;
         }
 
-        $this->type = $type;
-
         $table_tool_intro = Database::get_course_table(TABLE_TOOL_INTRO);
         $table_linked_resources = Database::get_course_table(TABLE_LINKED_RESOURCES);
         $table_item_properties = Database::get_course_table(TABLE_ITEM_PROPERTY);
 
+        $this->type = $type;
         $this->recycle_links();
         $this->recycle_link_categories();
         $this->recycle_events();
@@ -70,7 +72,7 @@ class CourseRecycler
 
         foreach ($this->course->resources as $type => $resources) {
             foreach ($resources as $id => $resource) {
-                $sql = "DELETE FROM ".$table_linked_resources."
+                $sql = "DELETE FROM $table_linked_resources
                         WHERE
                             c_id = ".$this->course_id." AND
                             (source_type = '".$type."' AND source_id = '".$id."') OR
@@ -201,7 +203,7 @@ class CourseRecycler
         $table_thread_qualify = Database::get_course_table(TABLE_FORUM_THREAD_QUALIFY);
         $table_thread_qualify_log = Database::get_course_table(TABLE_FORUM_THREAD_QUALIFY_LOG);
 
-        if ($this->type == 'full_backup') {
+        if ($this->type === 'full_backup') {
             $sql = "DELETE FROM ".$table_category." WHERE c_id = ".$this->course_id;
             Database::query($sql);
             $sql = "DELETE FROM ".$table_forum." WHERE c_id = ".$this->course_id;
diff --git a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRestorer.php b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRestorer.php
index ff70618427..e5f88e8276 100644
--- a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRestorer.php
+++ b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRestorer.php
@@ -3,6 +3,13 @@
 
 namespace Chamilo\CourseBundle\Component\CourseCopy;
 
+use DocumentManager;
+use Database;
+use CourseManager;
+use stdClass;
+use TestCategory;
+use SurveyManager;
+
 /**
  * Class CourseRestorer
  *
@@ -492,7 +499,7 @@ class CourseRestorer
                                                 'c_id = ? AND path = ?' => [
                                                     $this->destination_course_id,
                                                     "/".self::DBUTF8escapestring(substr($document->path, 9)),
-                                                ],
+                                                ]
                                             ]
                                         );
 
@@ -770,7 +777,7 @@ class CourseRestorer
                                     if (file_exists($path.$new_file_name)) {
                                         $file_info = pathinfo($path.$new_file_name);
                                         if (in_array($file_info['extension'], array('html','htm'))) {
-                                            $content    = file_get_contents($path.$new_file_name);
+                                            $content = file_get_contents($path.$new_file_name);
                                             if (UTF8_CONVERT) {
                                                 $content = utf8_encode($content);
                                             }
@@ -936,7 +943,6 @@ class CourseRestorer
 
 			foreach ($resources[RESOURCE_SCORM] as $document) {
 				$path = api_get_path(SYS_COURSE_PATH).$this->course->destination_path.'/';
-
 				@mkdir(dirname($path.$document->path), $perm, true);
 
 				if (file_exists($path.$document->path)) {
@@ -1176,7 +1182,6 @@ class CourseRestorer
         );
 
 		$this->course->resources[RESOURCE_FORUMTOPIC][$thread_id]->destination_id = $new_id;
-
 		$topic_replies = -1;
 
 		foreach ($this->course->resources[RESOURCE_FORUMPOST] as $post_id => $post) {
@@ -1728,7 +1733,6 @@ class CourseRestorer
 						$quiz->end_time   = null;
 					}
 
-
                     $params = array(
                         'c_id' => $this->destination_course_id,
                         'title' => self::DBUTF8($quiz->title),
@@ -2309,7 +2313,11 @@ class CourseRestorer
 		            c_id = ".$this->destination_course_id." AND
 		            code='".self::DBUTF8escapestring($survey_code)."'";
 		$result = Database::query($sql);
-		if (Database::num_rows($result) > 0) return false; else return true;
+        if (Database::num_rows($result) > 0) {
+            return false;
+        } else {
+            return true;
+        }
 	}
 
 	/**
@@ -2625,7 +2633,7 @@ class CourseRestorer
 
 				// Updating prerequisites
 				foreach ($old_prerequisite  as $key=>$my_old_prerequisite) {
-					if($my_old_prerequisite != ''){
+					if ($my_old_prerequisite != ''){
 						$sql = "UPDATE ".$table_item." SET prerequisite = '".$my_old_prerequisite."'
 						        WHERE c_id = ".$this->destination_course_id." AND id = '".$key."'  ";
 						Database::query($sql);
@@ -2652,7 +2660,7 @@ class CourseRestorer
 				}
 				foreach ($previous_item_ids as $new_item_id => $previous_item_old_id) {
 					$previous_new_id = 0;
-					if($previous_item_old_id != 0){
+					if ($previous_item_old_id != 0){
 						$previous_new_id = $new_item_ids[$previous_item_old_id];
 					}
 					$sql = "UPDATE ".$table_item." SET previous_item_id = '".$previous_new_id."'
@@ -2662,7 +2670,7 @@ class CourseRestorer
 
 				foreach ($next_item_ids as $new_item_id => $next_item_old_id) {
 					$next_new_id = 0;
-					if($next_item_old_id != 0){
+					if ($next_item_old_id != 0){
 						$next_new_id = $new_item_ids[$next_item_old_id];
 					}
 					$sql = "UPDATE ".$table_item." SET next_item_id = '".$next_new_id."'
@@ -2672,7 +2680,7 @@ class CourseRestorer
 
 				foreach ($prerequisite_ids as $new_item_id => $prerequisite_old_id) {
 					$prerequisite_new_id = 0;
-					if($prerequisite_old_id != 0){
+					if ($prerequisite_old_id != 0){
 						$prerequisite_new_id = $new_item_ids[$prerequisite_old_id];
 					}
 					$sql = "UPDATE ".$table_item." SET prerequisite = '".$prerequisite_new_id."'
@@ -2692,9 +2700,9 @@ class CourseRestorer
 	public function restore_student_publication($sessionId = 0)
     {
         $sessionId = intval($sessionId);
-		$work_assignment_table  = Database :: get_course_table(TABLE_STUDENT_PUBLICATION_ASSIGNMENT);
-		$work_table = Database :: get_course_table(TABLE_STUDENT_PUBLICATION);
-		$item_property_table  	= Database :: get_course_table(TABLE_ITEM_PROPERTY);
+        $work_assignment_table = Database:: get_course_table(TABLE_STUDENT_PUBLICATION_ASSIGNMENT);
+        $work_table = Database:: get_course_table(TABLE_STUDENT_PUBLICATION);
+        $item_property_table = Database:: get_course_table(TABLE_ITEM_PROPERTY);
 
 		// Query in student publication
 		$sql = 'SELECT * FROM '.$work_table.'
@@ -2985,9 +2993,9 @@ class CourseRestorer
     public function restore_thematic($session_id = 0)
     {
 		if ($this->course->has_resources(RESOURCE_THEMATIC)) {
-            $table_thematic = Database:: get_course_table(TABLE_THEMATIC);
-            $table_thematic_advance = Database:: get_course_table(TABLE_THEMATIC_ADVANCE);
-            $table_thematic_plan = Database:: get_course_table(TABLE_THEMATIC_PLAN);
+            $table_thematic = Database::get_course_table(TABLE_THEMATIC);
+            $table_thematic_advance = Database::get_course_table(TABLE_THEMATIC_ADVANCE);
+            $table_thematic_plan = Database::get_course_table(TABLE_THEMATIC_PLAN);
 
 			$resources = $this->course->resources;
 			foreach ($resources[RESOURCE_THEMATIC] as $id => $thematic) {
diff --git a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseSelectForm.php b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseSelectForm.php
index 9068139daf..2ee490d8f5 100644
--- a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseSelectForm.php
+++ b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseSelectForm.php
@@ -3,6 +3,12 @@
 
 namespace Chamilo\CourseBundle\Component\CourseCopy;
 
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Resource;
+use Database;
+use \CourseManager;
+use Display;
+use Chamilo\CourseBundle\Component\CourseCopy\Resources\Document;
+
 /**
  * Class to show a form to select resources
  * @author Bart Mollet <bart.mollet@hogent.be>
@@ -230,7 +236,7 @@ class CourseSelectForm
                             if ($resource) {
                                 echo '<li>';
 								// Event obj in 1.9.x in 1.10.x the class is CalendarEvent
-                                Coursecopy\Resource::setClassType($resource);
+                                Resource::setClassType($resource);
                                 echo '<label class="checkbox">';
                                 echo '<input type="checkbox" name="resource['.$type.']['.$id.']"  id="resource['.$type.']['.$id.']" />';
                                 $resource->show();
@@ -336,8 +342,8 @@ class CourseSelectForm
     		}
 		}
 
-		CourseSelectForm :: display_hidden_quiz_questions($course);
-		CourseSelectForm :: display_hidden_scorm_directories($course);
+		CourseSelectForm::display_hidden_quiz_questions($course);
+		CourseSelectForm::display_hidden_scorm_directories($course);
 		echo '</form>';
 		echo '<div id="dynamic_div" style="display:block;margin-left:40%;margin-top:10px;height:50px;"></div>';
 	}
@@ -412,7 +418,7 @@ class CourseSelectForm
 
 		/* Searching the documents resource that have been set to null because
         $avoid_serialize is true in the display_form() function*/
-		if ($from == 'copy_course') {
+		if ($from === 'copy_course') {
 			if (is_array($resource)) {
 				$resource = array_keys($resource);
 
@@ -528,9 +534,9 @@ class CourseSelectForm
                                 }
                             }
                         }
-					case RESOURCE_LINKCATEGORY :
-					case RESOURCE_FORUMCATEGORY :
-					case RESOURCE_QUIZQUESTION :
+					case RESOURCE_LINKCATEGORY:
+					case RESOURCE_FORUMCATEGORY:
+					case RESOURCE_QUIZQUESTION:
 					case RESOURCE_DOCUMENT:
 						// Mark folders to import which are not selected by the user to import,
 						// but in which a document was selected.