Added comment (#6607)

hyperf · Mar 20, 2024 · f160712 · f160712
1 parent ce27c2a
commit f160712
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/Metric.php b/src/Metric.php
@@ -55,6 +55,7 @@ public static function put(string $name, float $sample, ?array $labels = [])
 
     public static function time(string $name, callable $func, ?array $args = [], ?array $labels = [])
     {
+        // Must be keep the variable $timer alive, otherwise the destructor will be called right now.
         $timer = new Timer($name, $labels);
         return $func(...$args);
     }