[Apache + PHP] php_mbstring.dll missing

Wanna install 'Bake' for CakePHP. In cmd, when trying 'bake', an error prompts out like below (with solution included) :


http://aaron1102.pixnet.net/blog/post/51096054-%5B%E6%9E%B6%E7%AB%99%E6%9C%8D%E5%8B%99%5D%E9%A1%AF%E7%A4%BA%E9%81%BA%E5%A4%B1php_mbstring.dll%E7%9A%84%E8%A7%A3%E6%B1%BA%E6%96%B9%E6%A1%88