PHP Ajax Search Query

I have 2 mysql tables that I need to query results from based on set locations and miles radius away. Here is a generic example, Home Buyer is looking for a new home in several different locations.... Location 1 zip code = VWXYZ within 10 miles Location 2 zip code = ABCDE within 50 miles Location 3 zip code = LMNOP within 25 miles Homes are set with location based on long/lat coordinates. I have the current long/lat for all USA zip codes Need to output to results from the data above. Results 1) Query all homes where match Locations desired (loc1 within 10miles, loc2 within50 miles, loc3 within 25 miles) Results 2) On home edit details page, list all Home Buyers that are interested in this home. Current application has all of the buyer/home info and just needs the search/match criteria set above (note, Results 1 is script to manage email notice regarding query match for buyers). Need a quote and time frame to complete the above searches.... here is a sample script of zip code radius search: [login to view URL] Thanks