Update : memcache及redis方法

Qii/Cache/Memcached.php

@@ -130,6 +130,10 @@ class Memcached implements Intf
     {
         return $this->_conn->flush();
     }
+    public function __call($method, $args)
+    {
+        return call_user_func_array(array($this->_conn, $method), $args);
+    }
 }
 
 ?>

Qii/Cache/Redis.php

@@ -91,4 +91,9 @@ class Redis implements Intf
     {
         $this->redis->flushdb();
     }
+    
+    public function __call($method, $args)
+    {
+        return call_user_func_array(array($this->redis, $method), $args);
+    }
 }

Qii/Library/ShortURL.php

@@ -0,0 +1,46 @@
+<?php
+/**
+ * class ShortURL
+ * usage:
+ * 
+ * ShortURL::build($url);
+ */
+namespace Qii\Library;
+
+class ShortURL {  
+    static $chars = [ "a" , "b" , "c" , "d" , "e" , "f" , "g" , "h" ,  
+        "i" , "j" , "k" , "l" , "m" , "n" , "o" , "p" , "q" , "r" , "s" , "t" ,  
+        "u" , "v" , "w" , "x" , "y" , "z" , "0" , "1" , "2" , "3" , "4" , "5" ,  
+        "6" , "7" , "8" , "9" , "A" , "B" , "C" , "D" , "E" , "F" , "G" , "H" ,  
+        "I" , "J" , "K" , "L" , "M" , "N" , "O" , "P" , "Q" , "R" , "S" , "T" ,  
+        "U" , "V" , "W" , "X" , "Y" , "Z"  
+    ];
+  
+    public static function build($url){  
+        if($url == null){  
+            return null ;  
+        }  
+        //先得到url的32个字符的md5码  
+        $md5 = md5($url);
+        //将32个字符的md5码分成4段处理，每段8个字符  
+        for ($i = 0; $i < 4 ; $i++) {   
+            $offset = i * 8 ;  
+            $sub = substr($md5, $offset, $offset + 8) ;   
+            $sub16 = base_convert($sub, 16, 10); //将sub当作一个16进制的数，转成long    
+            // & 0X3FFFFFFF，去掉最前面的2位，只留下30位  
+            $sub16 &= 0X3FFFFFFF ;  
+            $shortURL = '';
+            //将剩下的30位分6段处理，每段5位  
+            for ($j = 0; $j < 6 ; $j++) {  
+                //得到一个 <= 61的数字  
+                $t = $sub16 & 0x0000003D;
+                $shortURL .= self::$chars[$t] ;  
+                  
+                $sub16 >>= 5 ;  //将sub16右移5位  
+            }
+            return $shortURL;
+        }
+        return null ;  
+    } 
+  
+}