改进

helper.php

@@ -277,7 +277,7 @@ if (!function_exists('url')) {
      * @param bool|string   $domain 域名
      * @return string
      */
-    function url($url = '', $vars = '', $suffix = true, $domain = true)
+    function url($url = '', $vars = '', $suffix = true, $domain = false)
     {
         return Url::build($url, $vars, $suffix, $domain);
     }

library/think/Url.php

@@ -30,8 +30,11 @@ class Url
      * @param boolean|string    $domain 是否显示域名 或者直接传入域名
      * @return string
      */
-    public static function build($url = '', $vars = '', $suffix = true, $domain = true)
+    public static function build($url = '', $vars = '', $suffix = true, $domain = false)
     {
+        if (false === $domain && Route::rules('domain')) {
+            $domain = true;
+        }
         // 解析URL
         if (0 === strpos($url, '[') && $pos = strpos($url, ']')) {
             // [name] 表示使用路由命名标识生成URL
@@ -194,7 +197,6 @@ class Url
                     self::$bindCheck = true;
                     $url             = substr($url, $pos[$domain]);
                 }
-
             } elseif ($domain) {
                 if (isset($domains[$domain]['[bind]'][0])) {
                     $bindModule = $domains[$domain]['[bind]'][0];

tests/thinkphp/library/think/urlTest.php

@@ -25,13 +25,13 @@ class urlTest extends \PHPUnit_Framework_TestCase
 
     public function setUp()
     {
-        Route::rules(['GET' => [],
+        Route::rules(['get' => [],
-            'POST'              => [],
+            'post'              => [],
-            'PUT'               => [],
+            'put'               => [],
-            'DELETE'            => [],
+            'delete'            => [],
-            'PATCH'             => [],
+            'patch'             => [],
-            'HEAD'              => [],
+            'head'              => [],
-            'OPTIONS'           => [],
+            'options'           => [],
             '*'                 => [],
             'alias'             => [],
             'domain'            => [],