added functionality specified alias and tag

src/PhpWord/Element/SDT.php

@@ -45,6 +45,20 @@ class SDT extends Text
      */
     private $listItems = array();
 
+    /**
+     * Alias
+     *
+     * @var string
+     */
+    private $alias;
+
+    /**
+     * Tag
+     *
+     * @var string
+     */
+    private $tag;
+
     /**
      * Create new instance
      *
@@ -127,4 +141,36 @@ class SDT extends Text
 
         return $this;
     }
+
+    /**
+     * @return string
+     */
+    public function getTag()
+    {
+        return $this->tag;
+    }
+
+    /**
+     * @param string $tag
+     */
+    public function setTag($tag)
+    {
+        $this->tag = $tag;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getAlias()
+    {
+        return $this->alias;
+    }
+
+    /**
+     * @param mixed $alias
+     */
+    public function setAlias($alias)
+    {
+        $this->alias = $alias;
+    }
 }

src/PhpWord/Writer/Word2007/Element/SDT.php

@@ -43,6 +43,8 @@ class SDT extends Text
         }
         $type = $element->getType();
         $writeFormField = "write{$type}";
+        $alias = $element->getAlias();
+        $tag = $element->getTag();
 
         $this->startElementP();
 
@@ -50,6 +52,8 @@ class SDT extends Text
 
         // Properties
         $xmlWriter->startElement('w:sdtPr');
+        $xmlWriter->writeElementBlock('w:alias', 'w:val', $alias);
+        $xmlWriter->writeElementBlock('w:tag', 'w:val', $tag);
         $xmlWriter->writeElementBlock('w:id', 'w:val', rand(100000000, 999999999));
         $xmlWriter->writeElementBlock('w:lock', 'w:val', 'sdtLocked');
         $this->$writeFormField($xmlWriter, $element);