From 7417d974b0be868b766af5c597a031badcbece4c Mon Sep 17 00:00:00 2001
From: plegall <plg@piwigo.org>
Date: Tue, 2 Nov 2021 15:41:46 +0100
Subject: [PATCH] keep compatibility with PHP 5 on this one

---
 include/ws_functions/pwg.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/ws_functions/pwg.php b/include/ws_functions/pwg.php
index c23bf376f..a930f5591 100644
--- a/include/ws_functions/pwg.php
+++ b/include/ws_functions/pwg.php
@@ -562,7 +562,11 @@ SELECT
   //Multidimentionnal sorting
   usort($filterable_users, function ($a, $b) 
   {
-    return strtolower($a['username']) <=> strtolower($b['username']);
+    // compatible with PHP 7+ only
+    // return strtolower($a['username']) <=> strtolower($b['username']);
+
+    // still compatible with PHP 5
+    return (strtolower($a['username']) >= strtolower($b['username']) ? 1 : 0);
   });
 
   // return $output_lines;