diff --git a/src/FrontendBehaviors.php b/src/FrontendBehaviors.php
index cfeb7a4..572d0e0 100644
--- a/src/FrontendBehaviors.php
+++ b/src/FrontendBehaviors.php
@@ -20,6 +20,9 @@ use Dotclear\Core\Frontend\Ctx;
  */
 class FrontendBehaviors
 {
+    /**
+     * @param   ArrayObject<string, mixed>  $alias
+     */
     public static function templateCustomSortByAlias(ArrayObject $alias): void
     {
         $alias['post'] = [
@@ -81,6 +84,11 @@ class FrontendBehaviors
         App::frontend()->context()->__set('saba_options', $options);
     }
 
+    /**
+     * @param   ArrayObject<string, mixed>  $params
+     *
+     * @return  array<string, mixed>
+     */
     public static function getPostsParams(ArrayObject $params): array
     {
         if (!isset($params['sql'])) {
@@ -91,7 +99,7 @@ class FrontendBehaviors
 
         # retreive _GET
         $qs = $_SERVER['QUERY_STRING'];
-        $qs = preg_replace('#(^|/)page/([0-9]+)#', '', $qs);
+        $qs = (string) preg_replace('#(^|/)page/([0-9]+)#', '', $qs);
         parse_str($qs, $get);
 
         # search string
@@ -189,7 +197,11 @@ class FrontendBehaviors
         return $options;
     }
 
-    # Ajouter la condition "ou" à la recherche
+    /**
+     * Ajouter la condition "ou" à la recherche.
+     *
+     * @param   ArrayObject<string, mixed>  $p
+     */
     public static function coreBlogBeforeGetPosts(ArrayObject $p): void
     {
         if (empty($p['search'])) {
diff --git a/src/Utils.php b/src/Utils.php
index 071d584..05db42a 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -15,6 +15,9 @@ use Dotclear\App;
  */
 class Utils
 {
+    /**
+     * @return  array<string, mixed>
+     */
     public static function getSabaDefaultPostsOptions(): array
     {
         return [
@@ -29,6 +32,9 @@ class Utils
         ];
     }
 
+    /**
+     * @return  array<string, string>
+     */
     public static function getSabaFormOptions(): array
     {
         return [
@@ -38,6 +44,9 @@ class Utils
         ];
     }
 
+    /**
+     * @return  array<string, string>
+     */
     public static function getSabaFormOrders(): array
     {
         return [
@@ -51,6 +60,9 @@ class Utils
         ];
     }
 
+    /**
+     * @return  array<string, string>
+     */
     public static function getSabaFormAges(): array
     {
         return [
@@ -62,6 +74,9 @@ class Utils
         ];
     }
 
+    /**
+     * @return  array<string, string>
+     */
     public static function getSabaFormTypes(): array
     {
         $know = [
diff --git a/src/Widgets.php b/src/Widgets.php
index 84f9262..0f02638 100644
--- a/src/Widgets.php
+++ b/src/Widgets.php
@@ -110,7 +110,7 @@ class Widgets
                     $ct .= '<li><label><input name="q_order" type="radio" value="' .
                         $v . '" ' .
                         ($v == $saba_options['q_order'] ? 'checked="checked" ' : '') .
-                        '/> ' . Html::escapeHTML($k) . '</label></li>';
+                        '/> ' . Html::escapeHTML((string) $k) . '</label></li>';
                 }
                 if (!empty($ct)) {
                     $ct .= '<li><label><input name="q_rev" type="checkbox" value="1" ' .
@@ -132,7 +132,7 @@ class Widgets
                     $ct .= '<li><label><input name="q_opt[]" type="checkbox" value="' .
                         $v . '" ' .
                         (in_array($v, $saba_options['q_opt']) ? 'checked="checked" ' : '') .
-                        '/> ' . Html::escapeHTML($k) . '</label></li>';
+                        '/> ' . Html::escapeHTML((string) $k) . '</label></li>';
                 }
                 if (!empty($ct)) {
                     $res .= $w->renderTitle(__('Filter options')) . sprintf('<ul>%s</ul>', $ct);
@@ -147,7 +147,7 @@ class Widgets
                     $ct .= '<li><label><input name="q_age" type="radio" value="' .
                         $v . '" ' .
                         ($v == $saba_options['q_age'] ? 'checked="checked" ' : '') .
-                        '/> ' . Html::escapeHTML($k) . '</label></li>';
+                        '/> ' . Html::escapeHTML((string) $k) . '</label></li>';
                 }
                 if (!empty($ct)) {
                     $res .= $w->renderTitle(__('Filter by age')) . sprintf('<ul>%s</ul>', $ct);
@@ -166,7 +166,7 @@ class Widgets
                     $ct .= '<li><label><input name="q_type[]" type="checkbox" value="' .
                         $v . '" ' .
                         (in_array($v, $saba_options['q_type']) ? 'checked="checked" ' : '') .
-                        '/> ' . Html::escapeHTML($k) . '</label></li>';
+                        '/> ' . Html::escapeHTML((string) $k) . '</label></li>';
                 }
                 if (!empty($ct)) {
                     $res .= $w->renderTitle(__('Filter by type')) . sprintf('<ul>%s</ul>', $ct);
@@ -186,7 +186,7 @@ class Widgets
                     $ct .= '<li><label><input name="q_cat[]" type="checkbox" value="' .
                         $rs->f('cat_id') . '" ' .
                         (in_array($rs->f('cat_id'), $saba_options['q_cat']) ? 'checked="checked" ' : '') .
-                        '/> ' . Html::escapeHTML($rs->f('cat_title')) . '</label></li>';
+                        '/> ' . Html::escapeHTML((string) $rs->f('cat_title')) . '</label></li>';
                 }
                 if (!empty($ct)) {
                     $res .= $w->renderTitle(__('Filter by category')) . sprintf('<ul>%s</ul>', $ct);