diff -Nur --no-dereference File-1.4.1.old/File.php File-1.4.1/File.php
--- File-1.4.1.old/File.php	2012-04-06 01:13:35.000000000 -0400
+++ File-1.4.1/File.php	2024-03-17 17:07:50.714000000 -0400
@@ -378,7 +378,7 @@
         $filePointers = &PEAR::getStaticProperty('File', 'filePointers');
 
         // unlock files
-        for ($i = 0, $c = count($locks); $i < $c; $i++) {
+        for ($i = 0, $c = count((array)$locks); $i < $c; $i++) {
             is_resource($locks[$i]) and @flock($locks[$i], LOCK_UN);
         }