Reset URI parts before parse

library/Zend/Uri/Uri.php

@@ -253,6 +253,20 @@ public function isAbsolute()
         return ($this->scheme !== null);
     }
 
+    /**
+     * Reset URI parts
+     */
+    protected function reset()
+    {
+        $this->setScheme(null);
+        $this->setPort(null);
+        $this->setUserInfo(null);
+        $this->setHost(null);
+        $this->setPath(null);
+        $this->setFragment(null);
+        $this->setQuery(null);
+    }
+
     /**
      * Parse a URI string
      *
@@ -261,6 +275,8 @@ public function isAbsolute()
      */
     public function parse($uri)
     {
+        $this->reset();
+
         // Capture scheme
         if (($scheme = self::parseScheme($uri)) !== null) {
             $this->setScheme($scheme);

tests/ZendTest/Uri/UriTest.php

@@ -1335,4 +1335,18 @@ public function notStringInputProvider()
             array(array('scheme' => 'http', 'host' => 'example.com'))
         );
     }
+
+    public function testParseTwice()
+    {
+        $uri  = new Uri();
+        $uri->parse('http://user@example.com:1/absolute/url?query#fragment');
+        $uri->parse('/relative/url');
+        $this->assertNull($uri->getScheme());
+        $this->assertNull($uri->getHost());
+        $this->assertNull($uri->getUserInfo());
+        $this->assertNull($uri->getPort());
+        $this->assertNull($uri->getQuery());
+        $this->assertNull($uri->getFragment());
+    }
+
 }