Bitcoin Exchange Api I need an bitcoin exchange api implemented in my website. 

Basically there will be one way transactions money->bitcoin and it needs to support major credit cards (visa,mastercard) as well as paypal and google wallet.

Could you recomend me a such api which works with php/js?

Thanks!
You will not be able to find an API that supports Paypal, credit cards and Google wallet since there's a chargeback issue with paying for Bitcoins in these methods. More on this here.
Each major exchange usually has their own api. Just Google "BTC-E API" for example. There is no "one stop shop" solution for this.