diff --git a/web2/js/alerts.js b/web2/js/alerts.js
index 3e88dd2..5242c16 100644
--- a/web2/js/alerts.js
+++ b/web2/js/alerts.js
@@ -3,27 +3,26 @@
 // initialisation 
 let previousAlerts = [];
 let sortOrder = {};
-ajaxRequest('GET', 'php/request.php/alertes/', CheckNewAlerts);
 
-// ajaxRequest('GET', 'php/request.php/alertes/', displayAlerts);
-setInterval(() => {
-  ajaxRequest('GET', 'php/request.php/alertes/', CheckNewAlerts);
-  // Effectuer une requête AJAX pour récupérer les nouvelles alertes
-}, 10000);
+ajaxRequest('GET', 'php/request.php/alertes/', CheckNewAlerts);
 ajaxRequest('GET', 'php/request.php/devices/', fillSelectDevice);
 fillSelectRisque();
 
-// filtrage
+setInterval(() => {
+  ajaxRequest('GET', 'php/request.php/alertes/', CheckNewAlerts);
+}, 10000);
+
+// initialisation of the filters
 $('#filter-button').click(() => {
-  const params = []; // Initialise le tableau des paramètres
+  const params = []; 
   const device = $('#device-select').val();
   const alertlvl = $('#risque-select').val();
-  
-  // Ajouter les paramètres uniquement s'ils sont définis
+
+  // enable parameters only if they are not empty
   if (device) params.push(`device_product=${encodeURIComponent(device)}`);
   if (alertlvl) params.push(`agent_severity=${encodeURIComponent(alertlvl)}`);
-  
-  // Construire l'URL avec les paramètres
+
+  // build the url
   let url;
   if (params.length) {
     url = `php/request.php/alertes/?${params.join('&')}`;
@@ -32,23 +31,12 @@ $('#filter-button').click(() => {
     url = 'php/request.php/alertes/';
     console.log(url);
   }
-  
-  // Effectuer la requête AJAX
-  ajaxRequest('GET', url, displayAlerts); 
+
+  ajaxRequest('GET', url, displayAlerts);
 }
 );
 
 
-// $('#tweets').on('click', '.del', () => {
-//   console.log('delete');
-//   ajaxRequest('DELETE', 'php/request.php/tweets/' +
-//     $(event.target).closest('.del').attr('value') + '?login=' + login, () => {
-//     ajaxRequest('GET', 'php/request.php/tweets/', displayTweets);
-//   }
-//   );
-// }
-// );
-
 //------------------------------------------------------------------------------
 //--- displayAlerts ------------------------------------------------------------
 //------------------------------------------------------------------------------
@@ -66,55 +54,68 @@ function displayAlerts(alerts) {
         $('<td>').text(alert['date_alerte']),
         $('<td>').text(alert['name']),
         $('<td>').text(alert['device_product']),
-        $('<td>').text(alert['src']+":"+alert['spt']),
-        $('<td>').text(alert['dst']+":"+alert['dpt']),
+        $('<td>').text(alert['src'] + ":" + alert['spt']),
+        $('<td>').text(alert['dst'] + ":" + alert['dpt']),
         $('<td>').text(alert['agent_severity']),
         $('<td>').text(alert['reason'])
       )
     );
 }
 
+//------------------------------------------------------------------------------
+//--- fillSelectDevice ------------------------------------------------------------
+//------------------------------------------------------------------------------
+// fill select with devices.
+// \param devices The devices data received via the Ajax request.
 function fillSelectDevice(devices) {
   for (let device of devices)
     $('#device-select').append($('<option>').text(device['device_product']).val(device['device_product']));
 }
 
+//------------------------------------------------------------------------------
+//--- fillSelectRisque ------------------------------------------------------------
+//------------------------------------------------------------------------------
+// fill select with alertslvl.
 function fillSelectRisque() {
   for (let i = 1; i <= 10; i++)
     $('#risque-select').append($('<option>').text(i).val(i));
 }
 
+//------------------------------------------------------------------------------
+//--- CheckNewAlerts ------------------------------------------------------------
+//------------------------------------------------------------------------------
+// checks if there is new alerts in the database and display if so.
+// \param newAlerts The alerts data received via the Ajax request.
+// \previousAlerts The old alerts data received via the Ajax request and stored.
 function CheckNewAlerts(newAlerts) {
-  // Comparer les nouvelles alertes avec les anciennes
   if (JSON.stringify(previousAlerts) !== JSON.stringify(newAlerts)) {
-      // Si les alertes ont changé, mettre à jour l'interface
-      displayAlerts(newAlerts);
-      
-      // Mettre à jour les alertes précédentes
-      previousAlerts = newAlerts;
+    displayAlerts(newAlerts);
+    previousAlerts = newAlerts;
   }
 }
 
-// Fonction pour trier les alertes
+//------------------------------------------------------------------------------
+//--- sortTable ------------------------------------------------------------
+//------------------------------------------------------------------------------
+// sort the table.
+// \param columnName The name of the column to sort.
 function sortTable(columnName) {
   const currentOrder = sortOrder[columnName] || 'asc';
   const newOrder = currentOrder === 'asc' ? 'desc' : 'asc';
   sortOrder[columnName] = newOrder;
 
-  // Construire les paramètres de la requête pour l'orderby
   const params = [];
   params.push(`orderby=${columnName}`);
   params.push(`order=${newOrder}`);
 
   const url = `php/request.php/alertes/?${params.join('&')}`;
 
-  // Effectuer la requête AJAX pour récupérer les alertes triées
   ajaxRequest('GET', url, displayAlerts);
 }
 
-// Ajouter des gestionnaires d'événements de clic sur les en-têtes de colonnes
-$('th').click(function() {
-  let columnName = $(this).text().trim().toLowerCase().replace(/ /g, '_'); // Convertir le texte de l'en-tête en nom de colonne
+// sort the table when clicking on the column name
+$('th').click(function () {
+  let columnName = $(this).text().trim().toLowerCase().replace(/ /g, '_'); 
   console.log(columnName);
   switch (columnName) {
     case 'n°':
diff --git a/web2/php/database.php b/web2/php/database.php
index 5218993..ac3c977 100644
--- a/web2/php/database.php
+++ b/web2/php/database.php
@@ -1,170 +1,79 @@
 <?php
-  require_once('constants.php');
-  ini_set('display_errors', 1);
-  ini_set('display_startup_errors', 1);
-  error_reporting(E_ALL);
+require_once('constants.php');
+ini_set('display_errors', 1);
+ini_set('display_startup_errors', 1);
+error_reporting(E_ALL);
 
-  //----------------------------------------------------------------------------
-  //--- dbConnect --------------------------------------------------------------
-  //----------------------------------------------------------------------------
-  // Create the connection to the database.
-  // \return False on error and the database otherwise.
-  function dbConnect()
-  {
-    try
-    {
-      $db = new PDO('mysql:host='.DB_SERVER.';dbname='.DB_NAME.';charset=utf8',
-        DB_USER, DB_PASSWORD);
-      $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 
-    }
-    catch (PDOException $exception)
-    {
-      error_log('Connection error: '.$exception->getMessage());
-      return false;
-    }
-    return $db;
+//----------------------------------------------------------------------------
+//--- dbConnect --------------------------------------------------------------
+//----------------------------------------------------------------------------
+// Create the connection to the database.
+// \return False on error and the database otherwise.
+function dbConnect()
+{
+  try {
+    $db = new PDO(
+      'mysql:host=' . DB_SERVER . ';dbname=' . DB_NAME . ';charset=utf8',
+      DB_USER,
+      DB_PASSWORD
+    );
+    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+  } catch (PDOException $exception) {
+    error_log('Connection error: ' . $exception->getMessage());
+    return false;
   }
+  return $db;
+}
 
-  //----------------------------------------------------------------------------
-  //--- dbRequestAlertes --------------------------------------------------------
-  //----------------------------------------------------------------------------
-  // Function to get all alertes 
-  // \param db The connected database.
-  // \return The list of alertes.
-  function dbRequestAlerts($db, $filtres = null, $orderby, $order)
-  {
-    try
-    {
-      $request = 'SELECT * FROM alertes';
-        $params = [];
+//----------------------------------------------------------------------------
+//--- dbRequestAlertes --------------------------------------------------------
+//----------------------------------------------------------------------------
+// Function to get all alertes 
+// \param db The connected database.
+// \return The list of alertes.
+function dbRequestAlerts($db, $filtres = null, $orderby, $order)
+{
+  try {
+    $request = 'SELECT * FROM alertes';
+    $params = [];
 
-
-        // Si $filtres est non nul et non vide, appliquez les conditions
-        if (isset($filtres)) {
-            $conditions = [];
-            foreach ($filtres as $colonne => $valeur) {
-                $conditions[] = "$colonne = :$colonne";
-                $params[":$colonne"] = $valeur;
-            }
-            $request .= ' WHERE ' . implode(' AND ', $conditions);
-        }
-
-        $request .= " ORDER BY $orderby $order";
-        
-        $statement = $db->prepare($request);
-        $statement->execute($params);
-        $result = $statement->fetchAll(PDO::FETCH_ASSOC);
+    if (isset($filtres)) {
+      $conditions = [];
+      foreach ($filtres as $colonne => $valeur) {
+        $conditions[] = "$colonne = :$colonne";
+        $params[":$colonne"] = $valeur;
+      }
+      $request .= ' WHERE ' . implode(' AND ', $conditions);
     }
-    catch (PDOException $exception)
-    {
-      error_log('Request error: '.$exception->getMessage());
-      return false;
-    }
-    return $result;
+
+    $request .= " ORDER BY $orderby $order";
+
+    $statement = $db->prepare($request);
+    $statement->execute($params);
+    $result = $statement->fetchAll(PDO::FETCH_ASSOC);
+  } catch (PDOException $exception) {
+    error_log('Request error: ' . $exception->getMessage());
+    return false;
   }
+  return $result;
+}
 
-    //----------------------------------------------------------------------------
-  //--- dbRequestDevices --------------------------------------------------------
-  //----------------------------------------------------------------------------
-  // Function to get all alertes 
-  // \param db The connected database.
-  // \return The list of alertes.
-  function dbRequestDevices($db)
-  {
-    try
-    {
-      $request = 'SELECT device_product FROM alertes GROUP BY device_product;';
-      $statement = $db->prepare($request);
-      $statement->execute();
-      $result = $statement->fetchAll(PDO::FETCH_ASSOC);
-    }
-
-    catch (PDOException $exception)
-    {
-      error_log('Request error: '.$exception->getMessage());
-      return false;
-    }
-    return $result;
+//----------------------------------------------------------------------------
+//--- dbRequestDevices --------------------------------------------------------
+//----------------------------------------------------------------------------
+// Function to get all Devices 
+// \param db The connected database.
+// \return The list of Devices.
+function dbRequestDevices($db)
+{
+  try {
+    $request = 'SELECT device_product FROM alertes GROUP BY device_product;';
+    $statement = $db->prepare($request);
+    $statement->execute();
+    $result = $statement->fetchAll(PDO::FETCH_ASSOC);
+  } catch (PDOException $exception) {
+    error_log('Request error: ' . $exception->getMessage());
+    return false;
   }
-
-
-  //----------------------------------------------------------------------------
-  //--- dbAddCTweet ------------------------------------------------------------
-  //----------------------------------------------------------------------------
-  // Add a tweet.
-  // \param db The connected database.
-  // \param login The login of the user.
-  // \param text The tweet to add.
-  // \return True on success, false otherwise.
-  function dbAddTweet($db, $login, $text)
-  {
-    try
-    {
-      $request = 'INSERT INTO tweets(login, text) VALUES(:login, :text)';
-      $statement = $db->prepare($request);
-      $statement->bindParam(':login', $login, PDO::PARAM_STR, 20);
-      $statement->bindParam(':text', $text, PDO::PARAM_STR, 80);
-      $statement->execute();
-    }
-    catch (PDOException $exception)
-    {
-      error_log('Request error: '.$exception->getMessage());
-      return false;
-    }
-    return true;
-  }
-  
-  //----------------------------------------------------------------------------
-  //--- dbModifyTweet ----------------------------------------------------------
-  //----------------------------------------------------------------------------
-  // Function to modify a tweet.
-  // \param db The connected database.
-  // \param id The id of the tweet to update.
-  // \param login The login of the user.
-  // \param text The new tweet.
-  // \return True on success, false otherwise.
-  function dbModifyTweet($db, $id, $login, $text)
-  {
-    try
-    {
-      $request = 'UPDATE tweets SET text=:text WHERE id=:id AND login=:login ';
-      $statement = $db->prepare($request);
-      $statement->bindParam(':id', $id, PDO::PARAM_INT);
-      $statement->bindParam(':login', $login, PDO::PARAM_STR, 20);
-      $statement->bindParam(':text', $text, PDO::PARAM_STR, 80);
-      $statement->execute();
-    }
-    catch (PDOException $exception)
-    {
-      error_log('Request error: '.$exception->getMessage());
-      return false;
-    }
-    return true;
-  }
-
-  //----------------------------------------------------------------------------
-  //--- dbDeleteTweet ----------------------------------------------------------
-  //----------------------------------------------------------------------------
-  // Delete a tweet.
-  // \param db The connected database.
-  // \param id The id of the tweet.
-  // \param login The login of the user.
-  // \return True on success, false otherwise.
-  function dbDeleteTweet($db, $id, $login)
-  {
-    try
-    {
-      $request = 'DELETE FROM tweets WHERE id=:id AND login=:login';
-      $statement = $db->prepare($request);
-      $statement->bindParam(':id', $id, PDO::PARAM_INT);
-      $statement->bindParam(':login', $login, PDO::PARAM_STR, 20);
-      $statement->execute();
-    }
-    catch (PDOException $exception)
-    {
-      error_log('Request error: '.$exception->getMessage());
-      return false;
-    }
-    return true;
-  }
-?>
+  return $result;
+}
diff --git a/web2/php/request.php b/web2/php/request.php
index 08ad380..375b318 100644
--- a/web2/php/request.php
+++ b/web2/php/request.php
@@ -17,17 +17,16 @@ $requestMethod = $_SERVER['REQUEST_METHOD'];
 $request = $_SERVER['PATH_INFO'];
 $request = explode('/', $request);
 
-
 if ($request[1] == 'alertes') {
     if ($requestMethod == 'GET') {
 
-        $orderby = isset($_GET['orderby']) ? $_GET['orderby'] : 'date_alerte'; // Par défaut, trier par date_alerte
-        $order = isset($_GET['order']) && ($_GET['order'] == 'desc') ? 'DESC' : 'ASC'; // Par défaut, ordre croissant
+        $orderby = isset($_GET['orderby']) ? $_GET['orderby'] : 'date_alerte'; 
+        $order = isset($_GET['order']) && ($_GET['order'] == 'desc') ? 'DESC' : 'ASC';
 
         $filtresArray = [];
-        if(isset($_GET['device_product']))
+        if (isset($_GET['device_product']))
             $filtresArray['device_product'] = $_GET['device_product'];
-        if(isset($_GET['agent_severity']))
+        if (isset($_GET['agent_severity']))
             $filtresArray['agent_severity'] = $_GET['agent_severity'];
 
         if (!empty($filtresArray)) {
@@ -36,12 +35,6 @@ if ($request[1] == 'alertes') {
             $data = dbRequestAlerts($db, null, $orderby, $order);
         }
     }
-
-    if ($requestMethod == 'PUT') {
-        parse_str(file_get_contents('php://input'), $_PUT);
-        if ($id != '' && isset($_PUT['login']) && isset($_PUT['text']))
-            $data = dbModifyTweet($db, $id, $_PUT['login'], strip_tags($_PUT['text']));
-    }
 }
 
 if ($request[1] == 'devices') {