From 436ad14f020d566de10f787443dae776cb4fd9b6 Mon Sep 17 00:00:00 2001
From: AdrienClairembault <aclairembault@teclib.com>
Date: Thu, 21 Sep 2023 15:21:52 +0200
Subject: [PATCH] Avoid deprecated warning when sync_field is null

---
 src/Auth.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Auth.php b/src/Auth.php
index a47321f410a..11869891110 100644
--- a/src/Auth.php
+++ b/src/Auth.php
@@ -1512,7 +1512,7 @@ public static function showSynchronizationForm(User $user)
                             'name' => 'force_ldap_resynch'
                         ]);
 
-                        if (strlen($authldap->fields['sync_field']) > 0) {
+                        if (strlen($authldap->fields['sync_field'] ?? "") > 0) {
                             echo Html::submit("<i class='fas fa-broom'></i><span>" . __s('Clean LDAP fields and force synchronisation') . "</span>", [
                                 'name' => 'clean_ldap_fields'
                             ]);