NYCPHP Meetup

[thegeek]

Thanks for the help already I am still trying to wrap my monkey brain aroung 
the concept of arrays but have found some good defenitions through google.  
I am using this code I have found at phpclasses by: Micah Carrick have asked 
for snippets hope this is not to much 

function get_zips_in_range($zip, $range) {

     // returns an array of the zip codes within $range of $zip. Returns
     // an array with keys as zip codes and values as the distance from
     // the zipcode defined in $zip.



     $details = $this->get_zip_point($zip);  // base zip details
     if (empty($details)) return;

     // This portion of the routine  calculates the minimum and maximum lat 
and
     // long within a given range.  This portion of the code was written
     // by Jeff Bearer (http://www.jeffbearer.com). This significanly 
decreases
     // the time it takes to execute a query.  My demo took 3.2 seconds in
     // v1.0.0 and now executes in 0.4 seconds!  Greate job Jeff!

     // Find Max - Min Lat / Long for Radius and zero point and query
     // only zips in that range.
     $lat_range = $range/69.172;
     $lon_range = abs($range/(cos($details[0]) * 69.172));
     $min_lat = number_format($details[0] - $lat_range, "4", ".", "");
     $max_lat = number_format($details[0] + $lat_range, "4", ".", "");
     $min_lon = number_format($details[1] - $lon_range, "4", ".", "");
     $max_lon = number_format($details[1] + $lon_range, "4", ".", ""); 

     $return = array();    // declared here for scope 

     $sql = "SELECT zip_code, lattitude, longitude FROM zip_code
             WHERE zip_code <> $zip AND lattitude BETWEEN '$min_lat' AND
            '$max_lat' AND longitude BETWEEN '$min_lon' AND '$max_lon'";

     $r = mysql_query($sql);

     if (!$r) {    // sql error

        $this->last_error = mysql_error();
        return;

     } else {

        while ($row = mysql_fetch_array($r)) {

           // loop through all 40 some thousand zip codes and determine 
whether
           // or not it's within the specified range.

           $dist = 
$this->calculate_mileage($details[0],$row[1],$details[1],$row[2]);
           if ($this->units == 'k') $dist = $dist * 1.609344;
           if ($dist <= $range) {
              $return[str_pad($row[0], 5, "0", STR_PAD_LEFT)] = round($dist, 
$this->decimals);
           }
        }
        mysql_free_result($r);
     } 

 

Currently I am able to post to the script with a zip and a range and echo 
the results(a range of zips). Thanks for the pointers already. 

Enjoy the Day