add del_cookie function

core/requests.php

@@ -194,6 +194,43 @@ public static function get_cookies($domain = '')
         return empty($domain) ? self::$cookies : self::$domain_cookies[$domain];
     }
 
+    /**
+     * 删除Cookie
+     * 
+     * @param string $domain  不传则删除全局Cookie
+     * @return void
+     * @author seatle <[email protected]> 
+     * @created time :2017-08-03 18:06
+     */
+    public static function del_cookie($key, $domain = '')
+    {
+        if (empty($key)) 
+        {
+            return false;
+        }
+
+        if (!empty($domain) && !isset(self::$domain_cookies[$domain])) 
+        {
+            return false;
+        }
+
+        if (!empty($domain)) 
+        {
+            if (isset(self::$domain_cookies[$domain][$key])) 
+            {
+                unset(self::$domain_cookies[$domain][$key]);
+            }
+        }
+        else 
+        {
+            if (isset(self::$cookies[$key])) 
+            {
+                unset(self::$cookies[$key]);
+            }
+        }
+        return true;
+    }
+
     /**
      * 删除Cookie
      * 
@@ -208,13 +245,16 @@ public static function del_cookies($domain = '')
         {
             return false;
         }
-        if ( empty($domain)) 
+        if ( empty($domain) ) 
         {
-            unset(self::$cookies);
+            self::$cookies = array();
         }
         else 
         {
-            unset(self::$domain_cookies[$domain]);
+            if (isset(self::$domain_cookies[$domain])) 
+            {
+                unset(self::$domain_cookies[$domain]);
+            }
         }
         return true;
     }
@@ -640,22 +680,26 @@ public static function request($url, $method = 'GET', $fields = array(), $files
             if (!empty($fields)) 
             {
                 // 不是上传文件的，用http_build_query, 能实现更好的兼容性，更小的请求数据包
-                if (is_array($fields) && empty($file_fields)) 
+                if ( empty($file_fields) ) 
                 {
-                    $fields = http_build_query($fields);
+                    // post方式
+                    if ( is_array($fields) ) 
+                    {
+                        $fields = http_build_query($fields);
+                    }
                 }
                 else 
                 {
-                    // 如果是json
-                    if (!is_null($stance = json_decode($fields, true))) 
-                    {
-                        $fields = json_encode(array_merge($stance, $file_fields));
-                    } 
-                    else 
+                    // 有post数据
+                    if ( is_array($fields) && !empty($fields) ) 
                     {
                         // 某些server可能会有问题
                         $fields = array_merge($fields, $file_fields);
                     }
+                    else 
+                    {
+                        $fields = $file_fields;
+                    }
                 }
                 // 不能直接传数组，不知道是什么Bug，会非常慢
                 curl_setopt( self::$ch, CURLOPT_POSTFIELDS, $fields );