Fix empty spans (openzipkin#122)

* fix empty spans * Uses `count` instead of `empty` as it is not recommended in PHP 7.x
lvxiaoqi · Jul 30, 2019 · fe8a275 · fe8a275
1 parent b1188c9
commit fe8a275
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/Zipkin/Reporters/Http.php b/src/Zipkin/Reporters/Http.php
@@ -45,6 +45,10 @@ public function __construct(
      */
     public function report(array $spans)
     {
+        if (count($spans) === 0) {
+            return;
+        }
+
         $payload = json_encode(array_map(function (Span $span) {
             return $span->toArray();
         }, $spans));