Fallback to time() if hrtime() is not supported

Author: GromNaN

src/Scout/ScoutEngine.php

@@ -44,6 +44,7 @@
 use function sleep;
 use function sprintf;
 use function substr;
+use function time;
 
 /**
  * In the context of this Laravel Scout engine, a "search index" refers to
@@ -526,8 +527,9 @@ private function usesSoftDelete(Model|EloquentCollection $model): bool
      */
     private function wait(Closure $callback): void
     {
-        $timeout = hrtime()[0] + self::WAIT_TIMEOUT_SEC;
-        while (hrtime()[0] < $timeout) {
+        // Fallback to time() if hrtime() is not supported
+        $timeout = (hrtime()[0] ?? time()) + self::WAIT_TIMEOUT_SEC;
+        while ((hrtime()[0] ?? time()) < $timeout) {
             if ($callback()) {
                 return;
             }