Google maps APIs

I need 3 x google maps apis to be created and to work with our MySql databases. API 1: Map plotting Need a map interface very similare to: [login to view URL] But the postcodes need to be called up from a table in a database using a select function to give an array of postcodes and then plotted on one map. API 2: Search for nearest store function on website Need a search function on website where user enters a UK post code and the 3 nearest stores are displayed API 3: Need a page same as: [login to view URL]