Shanghai hua  like most it has some things in standard Chinese but a lot of local words

From what I've pieced together it's a southern dialect of Chinese that has a lot of words and phrases mixed in from northern Chinese (putonghua). It's southern China, but it has been a powerful economic and political center, so it has been influenced by the various times in history when the north has held power.

To be precise, please look here :

The dialect spoken in Shanghai, together with its many subdialects, is the major component of the Wu family of Chinese.  It has been a historically different spoken language for a long, long time.  It has no relation with southern Chinese.  For more details, please see below.  Properly speaking, it is called "shanghai-hua" but rather "wu-hua".

http://en.wikipedia.org/wiki/Wu_Chinese

Shanghainese (simplified Chinese: 上海话/上海言话; traditional Chinese: 上海話/上海言話; pinyin: Shànghǎihuà/Shànghǎiyánhuà): is also a very common name, used because Shanghai is the most well-known city in the Wu-speaking region, and most people are unfamiliar with the term Wu Chinese. The use of the term Shanghainese for referring to the family is more typically used outside of China and in simplified introductions to the areas where it's spoken or to other similar topics, for example one might encounter sentences like "They speak a kind of Shanghainese in Ningbo." The term Shanghainese is never used by serious linguists to refer to anything but the Shanghai dialect.

I don't mean to be off-topic but why doesn't post a topic about what is the dialect spoken in Australia?

I mean, really you all, when they showed Crocodile Dundee in Atlanta, it had to be subtitled for the audience.