up composer require

XieBiao · XieBiao · commit bb96438ec927 · 2017-03-28T19:47:38.000+08:00
diff --git a/composer.json b/composer.json
@@ -14,7 +14,9 @@
       "email": "hhxsv5@sina.com"
     }
   ],
-  "require": {},
+  "require": {
+    "php": ">=5.4"
+  },
   "require-dev": {
     "phpunit/phpunit": "~6.0"
   },
