Adds comment to clarify tricky preg check

zendframework · Oct 10, 2019 · f86eaa9 · f86eaa9
1 parent ec0c147
commit f86eaa9
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/Uri.php b/src/Uri.php
@@ -603,6 +603,7 @@ private function filterPath(string $path) : string
      */
     private function filterInvalidUtf8(string $string) : string
     {
+        // check if given string contains only valid UTF-8 characters
         if (preg_match('//u', $string)) {
             return $string;
         }