diff --git a/include/grids.php b/include/grids.php
index 2f04363..8530ead 100644
--- a/include/grids.php
+++ b/include/grids.php
@@ -1,134 +1,108 @@
 <?php
   session_start();
-
-  if(!isset($_SESSION['admin_id']))
+  if(!isset($_SESSION['admin_id'])) {
     exit -1;
-
+  }
   require(dirname(__FILE__) . '/connect.php');
   require(dirname(__FILE__) . '/functions.php');
 
-
   // ---------------- SELECT ----------------
   if(isset($_GET['select'])){
-
-    // Select the users
-    if($_GET['select'] == "user"){
+    if($_GET['select'] == "user"){ // Select the users
       $req = $bdd->prepare('SELECT * FROM user');
       $req->execute();
-
       if($data = $req->fetch()) {
         do {
-          $list[] = array("user_id" => $data['user_id'],
-                          "user_pass" => $data['user_pass'],
-                          "user_mail" => $data['user_mail'],
-                          "user_phone" => $data['user_phone'],
-                          "user_online" => $data['user_online'],
-                          "user_enable" => $data['user_enable'],
-                          "user_start_date" => $data['user_start_date'],
-                          "user_end_date" => $data['user_end_date']);
+          $list[] = array(
+            "user_id" => $data['user_id'],
+            "user_pass" => $data['user_pass'],
+            "user_mail" => $data['user_mail'],
+            "user_phone" => $data['user_phone'],
+            "user_online" => $data['user_online'],
+            "user_enable" => $data['user_enable'],
+            "user_start_date" => $data['user_start_date'],
+            "user_end_date" => $data['user_end_date']
+          );
         } while($data = $req->fetch());
-
         echo json_encode($list);
       }
-      // If it is an empty answer, we need to encore an empty json object
       else{
-        $list = array();
-        echo json_encode($list);
+        echo json_encode(array()); // If it is an empty answer, we need to encore an empty json object
       }
     }
-
-    // Select the logs
-    else if($_GET['select'] == "log" && isset($_GET['offset'], $_GET['limit'])){
+    else if($_GET['select'] == "log" && isset($_GET['offset'], $_GET['limit'])){ // Select the logs
       $offset = intval($_GET['offset']);
       $limit = intval($_GET['limit']);
-
       // Creation of the LIMIT for build different pages
       $page = "LIMIT $offset, $limit";
-
       // ... filtering by the bootstrap table plugin
       $filter = isset($_GET['filter']) ? json_decode($_GET['filter'],true) : []; // this is passed by the bootstrap table filter plugin (if a filter was chosen by the user): these are the concrete set filters with their value
       $where = !empty($filter)?'WHERE TRUE':'';
       $allowed_query_filters = ['user_id', 'log_trusted_ip','log_trusted_port','log_remote_ip','log_remote_port']; // these are valid filters that could be used (defined here for sql security reason)
       $query_filters_existing = [];
       foreach($filter as $unsanitized_filter_key => $unsanitized_filter_val) {
-         if(in_array($unsanitized_filter_key, $allowed_query_filters)) { // if this condition does not match: ignore it, because this parameter should not be passed
-            // if $unsanitized_filter_key is in array $allowed_query_filters its a valid key and can not be harmful, so it can be considered sanitized
-            $where .= " AND $unsanitized_filter_key = ?";
-            $query_filters_existing[] = $unsanitized_filter_key;
-         }
+        if(in_array($unsanitized_filter_key, $allowed_query_filters)) { // if this condition does not match: ignore it, because this parameter should not be passed
+          // if $unsanitized_filter_key is in array $allowed_query_filters its a valid key and can not be harmful, so it can be considered sanitized
+          $where .= " AND $unsanitized_filter_key = ?";
+          $query_filters_existing[] = $unsanitized_filter_key;
+        }
       }
-
       // Select the logs
       $req_string = "SELECT *, (SELECT COUNT(*) FROM log $where) AS nb FROM log $where ORDER BY log_id DESC $page";
       $req = $bdd->prepare($req_string);
-
       // dynamically bind the params
-      foreach(array_merge($query_filters_existing,$query_filters_existing) as $i => $query_filter) // array_merge -> duplicated the array contents; this is needed because our where clause is bound two times (in subquery + the outer query)
-         $req->bindValue($i+1, $filter[$query_filter]);
-
+      foreach(array_merge($query_filters_existing,$query_filters_existing) as $i => $query_filter) { // array_merge -> duplicated the array contents; this is needed because our where clause is bound two times (in subquery + the outer query)
+        $req->bindValue($i+1, $filter[$query_filter]);
+      }
       $req->execute();
-
       $list = array();
-
       $data = $req->fetch();
-
       if($data) {
         $nb = $data['nb'];
-
         do {
           // Better in Kb or Mb
           $received = ($data['log_received'] > 1000000) ? $data['log_received']/1000000 . " Mo" : $data['log_received']/1000 . " Ko";
           $sent = ($data['log_send'] > 1000000) ? $data['log_send']/1000000 . " Mo" : $data['log_send']/1000 . " Ko";
-
           // We add to the array the new line of logs
           array_push($list, array(
-                                  "log_id" => $data['log_id'],
-                                  "user_id" => $data['user_id'],
-                                  "log_trusted_ip" => $data['log_trusted_ip'],
-                                  "log_trusted_port" => $data['log_trusted_port'],
-                                  "log_remote_ip" => $data['log_remote_ip'],
-                                  "log_remote_port" => $data['log_remote_port'],
-                                  "log_start_time" => $data['log_start_time'],
-                                  "log_end_time" => $data['log_end_time'],
-                                  "log_received" => $received,
-                                  "log_send" => $sent));
-
+            "log_id" => $data['log_id'],
+            "user_id" => $data['user_id'],
+            "log_trusted_ip" => $data['log_trusted_ip'],
+            "log_trusted_port" => $data['log_trusted_port'],
+            "log_remote_ip" => $data['log_remote_ip'],
+            "log_remote_port" => $data['log_remote_port'],
+            "log_start_time" => $data['log_start_time'],
+            "log_end_time" => $data['log_end_time'],
+            "log_received" => $received,
+            "log_send" => $sent)
+          );
         } while ($data = $req->fetch());
       }
       else {
         $nb = 0;
       }
-
       // We finally print the result
       $result = array('total' => intval($nb), 'rows' => $list);
-
       echo json_encode($result);
     }
-
-    // Select the admins
-    else if($_GET['select'] == "admin"){
+    else if($_GET['select'] == "admin"){ // Select the admins
       $req = $bdd->prepare('SELECT * FROM admin');
       $req->execute();
-
       if($data = $req->fetch()) {
         do{
           $list[] = array(
-                          "admin_id" => $data['admin_id'],
-                          "admin_pass" => $data['admin_pass']
-                          );
+            "admin_id" => $data['admin_id'],
+            "admin_pass" => $data['admin_pass']
+          );
         } while($data = $req->fetch());
-
         echo json_encode($list);
       }
       else{
-        $list = array();
-        echo json_encode($list);
+        echo json_encode(array());
       }
     }
   }
-
-  // ---------------- ADD USER ----------------
-  else if(isset($_POST['add_user'], $_POST['user_id'], $_POST['user_pass'])){
+  else if(isset($_POST['add_user'], $_POST['user_id'], $_POST['user_pass'])){ // ---------------- ADD USER ----------------
     // Put some default values
     $id = $_POST['user_id'];
     $pass = hashPass($_POST['user_pass']);
@@ -138,12 +112,10 @@
     $enable = 1;
     $start = null;
     $end = null;
-
-    $req = $bdd->prepare('INSERT INTO user (user_id, user_pass, user_mail, user_phone, user_online, user_enable, user_start_date, user_end_date)
-                        VALUES (?, ?, ?, ?, ?, ?, ?, ?)');
+    $req = $bdd->prepare('INSERT INTO user (user_id, user_pass, user_mail, user_phone, user_online, user_enable, user_start_date, user_end_date) VALUES (?, ?, ?, ?, ?, ?, ?, ?)');
     $req->execute(array($id, $pass, $mail, $phone, $online, $enable, $start, $end));
-
-    $res = array("user_id" => $id,
+    $res = array(
+	  "user_id" => $id,
       "user_pass" => $pass,
       "user_mail" => $mail ,
       "user_phone" => $phone,
@@ -152,84 +124,60 @@
       "user_start_date" => $start,
       "user_end_date" => $end
     );
-
     echo json_encode($res);
   }
-
-  // ---------------- UPDATE USER ----------------
-  else if(isset($_POST['set_user'])){
+  else if(isset($_POST['set_user'])){ // ---------------- UPDATE USER ----------------
     $valid = array("user_id", "user_pass", "user_mail", "user_phone", "user_enable", "user_start_date", "user_end_date");
-
     $field = $_POST['name'];
     $value = $_POST['value'];
     $pk = $_POST['pk'];
-
     if (!isset($field) || !isset($pk) || !in_array($field, $valid)) {
       return;
     }
-
     if ($field === 'user_pass') {
       $value = hashPass($value);
     }
     else if (($field === 'user_start_date' || $field === 'user_end_date') && $value === '') {
       $value = null;
     }
-
     // /!\ SQL injection: field was checked with in_array function
     $req_string = 'UPDATE user SET ' . $field . ' = ? WHERE user_id = ?';
     $req = $bdd->prepare($req_string);
     $req->execute(array($value, $pk));
   }
-
-  // ---------------- REMOVE USER ----------------
-  else if(isset($_POST['del_user'], $_POST['del_user_id'])){
+  else if(isset($_POST['del_user'], $_POST['del_user_id'])){ // ---------------- REMOVE USER ----------------
     $req = $bdd->prepare('DELETE FROM user WHERE user_id = ?');
     $req->execute(array($_POST['del_user_id']));
   }
-
-  // ---------------- ADD ADMIN ----------------
-  else if(isset($_POST['add_admin'], $_POST['admin_id'], $_POST['admin_pass'])){
+  else if(isset($_POST['add_admin'], $_POST['admin_id'], $_POST['admin_pass'])){ // ---------------- ADD ADMIN ----------------
     $req = $bdd->prepare('INSERT INTO admin(admin_id, admin_pass) VALUES (?, ?)');
     $req->execute(array($_POST['admin_id'], hashPass($_POST['admin_pass'])));
   }
-
-  // ---------------- UPDATE ADMIN ----------------
-  else if(isset($_POST['set_admin'])){
+  else if(isset($_POST['set_admin'])){ // ---------------- UPDATE ADMIN ----------------
     $valid = array("admin_id", "admin_pass");
-
     $field = $_POST['name'];
     $value = $_POST['value'];
     $pk = $_POST['pk'];
-
     if (!isset($field) || !isset($pk) || !in_array($field, $valid)) {
       return;
     }
-
     if ($field === 'admin_pass') {
       $value = hashPass($value);
     }
-
     $req_string = 'UPDATE admin SET ' . $field . ' = ? WHERE admin_id = ?';
     $req = $bdd->prepare($req_string);
     $req->execute(array($value, $pk));
   }
-
-  // ---------------- REMOVE ADMIN ----------------
-  else if(isset($_POST['del_admin'], $_POST['del_admin_id'])){
+  else if(isset($_POST['del_admin'], $_POST['del_admin_id'])){ // ---------------- REMOVE ADMIN ----------------
     $req = $bdd->prepare('DELETE FROM admin WHERE admin_id = ?');
     $req->execute(array($_POST['del_admin_id']));
   }
-
-  // ---------------- UPDATE CONFIG ----------------
-  else if(isset($_POST['update_config'])){
-
+  else if(isset($_POST['update_config'])){ // ---------------- UPDATE CONFIG ----------------
       $pathinfo = pathinfo($_POST['config_file']);
-
       $config_full_uri = $_POST['config_file']; // the complete path to the file, including the file (name) its self and the fully qualified path
       $config_full_path = $pathinfo['dirname']; // path to file (without filename its self)
       $config_name = basename($_POST['config_file']); // config file name only (without path)
       $config_parent_dir = basename($config_full_path); // name of the dir that contains the config file (without path)
-
       /*
        * create backup for history
        */
@@ -237,12 +185,10 @@
          mkdir($dir, 0777, true);
       $ts = time();
       copy("../$config_full_uri", "../$config_full_path/history/${ts}_${config_name}");
-
       /*
        *  write config
        */
       $conf_success = file_put_contents('../'.$_POST['config_file'], $_POST['config_content']);
-
       echo json_encode([
         'debug' => [
             'config_file' => $_POST['config_file'],
@@ -251,5 +197,4 @@
         'config_success' => $conf_success !== false,
       ]);
   }
-
 ?>