Need help adding on!

jakebur01 · April 14, 2007

Ok, I have tryed different things with this and nothing i've come up with has worked. What I have is a PHP Class and MySQL table to find the distance between zip codes and * find all zip codes within a given mileage or kilometer range. I have a table named zip_code with all 40000 zip codes in it. The program works great when calculating a distance between two zips, and returning zips within a given range.

What I am trying to do is add onto the code to have it select from a table I have created called "smithssc" the dealers within range. I have 5 colums in the table: Dealer, Address, City, State, and Zip.

I was trying to add something like this onto it. I am not connecting my dots right.

$result = mysql_query("SELECT * FROM smithssc WHERE Zip = '$key'", $db); 
echo "<table>"; 

while($myrow = mysql_fetch_array ($result)) 
{ 
echo"<tr><td>"; 
echo$myrow["Dealer"]; 
echo"<td>"; 
echo$myrow["Address"]; 
echo"<td>"; 
echo$myrow["City"]; 
echo"<td>"; 
echo$myrow["State"]; 
echo"<td>"; 
echo$myrow["Zip"]; 
} 
echo "</table>";

Using this will not pull anything up with that variable $key.

Here is the code:

demo.php

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
   <title>Zip Code Range and Distance Calculation Demo</title> 
   <style type="text/css" lang="en"> 
   BODY, P { font-family: sans-serif; font-size: 9pt; } 
   H3 { font-family: sans-serif; font-size: 14pt; } 
   </style> 
</head> 
<body> 

<?php 

/*  
   DEMO for using the zipcode PHP class. By: Micah Carrick 
   Questions?  Comments?  Suggestions?  email@micahcarrick.com 
*/ 

require_once('zipcode.class.php');      // zip code class 


// Open up a connection to the database.  The sql required to create the MySQL 
// tables and populate them with the data is in the /sql subfolder.  You can 
// upload those sql files using phpMyAdmin or a MySQL prompt.  You will have to 
// modify the below information to your database information.  
$db = mysql_connect('localhost','myuser','mypass') or die(mysql_error()); 
mysql_select_db('mydata') or die(mysql_error()); 



// Below is an example of how to calculate the distance between two zip codes. 

echo '<h3>A sample calculating the distance between 2 zip codes: 93001 and 60618</h3>'; 

$z = new zipcode_class; 
$miles = $z->get_distance(97214, 98501); 

if ($miles === false) echo 'Error: '.$z->last_error; 
else echo "Zip code <b>97214</b> is <b>$miles</b> miles away from <b>98501</b>.<br />"; 



// Below is an example of how to return an array with all the zip codes withing 
// a range of a given zip code along with how far away they are.  The array's 
// keys are assigned to the zip code and their value is the distance from the 
// given zip code.  

echo '<h3>A sample getting all the zip codes withing a range: 90 miles from 97214</h3>'; 

$zips = $z->get_zips_in_range('97214', 90, _ZIPS_SORT_BY_DISTANCE_ASC, true); 


if ($zips === false) echo 'Error: '.$z->last_error; 
else { 
    
foreach ($zips as $key => $value) { 
      echo "Zip code <b>$key</b> is <b>$value</b> miles away from <b>97214</b>.<br />"; 
   } 
    
   // One thing you may want to do with this is create SQL from it. For example, 
   // iterate through the array to create SQL that is something like: 
   // WHERE zip_code IN ('93001 93002 93004') 
   // and then use that condition in your query to find all pizza joints or 
   // whatever you're using it for. Make sense? Hope so. 

    
   echo "<br /><i>get_zips_in_range() executed in <b>".$z->last_time."</b> seconds.</i><br />"; 
} 

// And one more example of using the class to simply get the information about 
// a zip code.  You can then do whatever you want with it.  The array returned 
// from the function has the database field names as the keys.  I just do a 
// couple string converstions to make them more readable. 

echo '<h3>A sample getting details about a zip code: 97214</h3>'; 

$details = $z->get_zip_details('97214'); 

if ($details === false) echo 'Error: '.$z->last_error; 
else { 
   foreach ($details as $key => $value) { 
      $key = str_replace('_',' ',$key); 
      $key = ucwords($key); 
      echo "$key: $value<br />"; 
   } 
} 


?> 


</body> 
</html>

zipcode.class.php

 <?php 
/******************************************************************************* 
*                ZIP Code and Distance Claculation Class 
******************************************************************************* 
*      Author:     Micah Carrick 
*      Email:      email@micahcarrick.com 
*      Website:    http://www.micahcarrick.com 
* 
*      File:       zipcode.class.php 
*      Version:    1.2.0 
*      Copyright:  (c) 2005 - Micah Carrick 
*                  You are free to use, distribute, and modify this software 
*                  under the terms of the GNU General Public License.  See the 
*                  included license.txt file. 
* 
******************************************************************************* 
*  VERION HISTORY: 
*      v1.2.0 [Oct 22, 2006] - Using a completely new database based on user 
                                contributions which resolves many data bugs. 
                              - Added sorting to get_zips_in_range() 
                              - Added ability to include/exclude the base zip 
                                from get_zips_in_range() 
                              
*      v1.1.0 [Apr 30, 2005] - Added Jeff Bearer's code to make it MUCH faster! 
  
*      v1.0.1 [Apr 22, 2005] - Fixed a typo 
  
*      v1.0.0 [Apr 12, 2005] - Initial Version 
* 
******************************************************************************* 
*  DESCRIPTION: 
  
*    A PHP Class and MySQL table to find the distance between zip codes and 
*    find all zip codes within a given mileage or kilometer range. 
*      
******************************************************************************* 
*/ 

// constants for setting the $units data member 
define('_UNIT_MILES', 'm'); 
define('_UNIT_KILOMETERS', 'k'); 

// constants for passing $sort to get_zips_in_range() 
define('_ZIPS_SORT_BY_DISTANCE_ASC', 1); 
define('_ZIPS_SORT_BY_DISTANCE_DESC', 2); 
define('_ZIPS_SORT_BY_ZIP_ASC', 3); 
define('_ZIPS_SORT_BY_ZIP_DESC', 4); 

// constant for miles to kilometers conversion 
define('_M2KM_FACTOR', 1.609344); 

class zipcode_class { 

   var $last_error = "";            // last error message set by this class 
   var $last_time = 0;              // last function execution time (debug info) 
   var $units = _UNIT_MILES;        // miles or kilometers 
   var $decimals = 2;               // decimal places for returned distance 

   function get_distance($zip1, $zip2) { 

      // returns the distance between to zip codes.  If there is an error, the 
      // function will return false and set the $last_error variable. 
      
      $this->chronometer();         // start the clock 
      
      if ($zip1 == $zip2) return 0; // same zip code means 0 miles between. 
    
    
      // get details from database about each zip and exit if there is an error 
      
      $details1 = $this->get_zip_point($zip1); 
      $details2 = $this->get_zip_point($zip2); 
      if ($details1 == false) { 
         $this->last_error = "No details found for zip code: $zip1"; 
         return false; 
      } 
      if ($details2 == false) { 
         $this->last_error = "No details found for zip code: $zip2"; 
         return false; 
      }      


      // calculate the distance between the two points based on the lattitude 
      // and longitude pulled out of the database. 
      
      $miles = $this->calculate_mileage($details1[0], $details2[0], $details1[1], $details2[1]); 
      
      $this->last_time = $this->chronometer(); 
  
      if ($this->units == _UNIT_KILOMETERS) return round($miles * _M2KM_FACTOR, $this->decimals); 
      else return round($miles, $this->decimals);       // must be miles 
      
   }    

   function get_zip_details($zip) { 
      
      // This function pulls the details from the database for a 
      // given zip code. 
  
      $sql = "SELECT lat AS lattitude, lon AS longitude, city, county, state_prefix, 
              state_name, area_code, time_zone 
              FROM zip_code 
              WHERE zip_code='$zip'"; 
              
      $r = mysql_query($sql); 
      if (!$r) { 
         $this->last_error = mysql_error(); 
         return false; 
      } else { 
         $row = mysql_fetch_array($r, MYSQL_ASSOC); 
         mysql_free_result($r); 
         return $row;        
      } 
   } 

   function get_zip_point($zip) { 
    
      // This function pulls just the lattitude and longitude from the 
      // database for a given zip code. 
      
      $sql = "SELECT lat, lon from zip_code WHERE zip_code='$zip'"; 
      $r = mysql_query($sql); 
      if (!$r) { 
         $this->last_error = mysql_error(); 
         return false; 
      } else { 
         $row = mysql_fetch_array($r); 
         mysql_free_result($r); 
         return $row;        
      }      
   } 

   function calculate_mileage($lat1, $lat2, $lon1, $lon2) { 
  
      // used internally, this function actually performs that calculation to 
      // determine the mileage between 2 points defined by lattitude and 
      // longitude coordinates.  This calculation is based on the code found 
      // at http://www.cryptnet.net/fsp/zipdy/ 
        
      // Convert lattitude/longitude (degrees) to radians for calculations 
      $lat1 = deg2rad($lat1); 
      $lon1 = deg2rad($lon1); 
      $lat2 = deg2rad($lat2); 
      $lon2 = deg2rad($lon2); 
      
      // Find the deltas 
      $delta_lat = $lat2 - $lat1; 
      $delta_lon = $lon2 - $lon1; 
    
      // Find the Great Circle distance 
      $temp = pow(sin($delta_lat/2.0),2) + cos($lat1) * cos($lat2) * pow(sin($delta_lon/2.0),2); 
      $distance = 3956 * 2 * atan2(sqrt($temp),sqrt(1-$temp)); 

      return $distance; 
   } 
    
   function get_zips_in_range($zip, $range, $sort=1, $include_base) { 
        
      // 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. 
      
      $this->chronometer();                     // start the clock 
      
      $details = $this->get_zip_point($zip);  // base zip details 
      if ($details == false) return false; 
      
      // 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 

      $sql = "SELECT zip_code, lat, lon FROM zip_code "; 
      if (!$include_base) $sql .= "WHERE zip_code <> '$zip' AND "; 
      else $sql .= "WHERE "; 
      $sql .= "lat BETWEEN '$min_lat' AND '$max_lat' 
               AND lon BETWEEN '$min_lon' AND '$max_lon'"; 
              
      $r = mysql_query($sql); 
      
      if (!$r) {    // sql error 

         $this->last_error = mysql_error(); 
         return false; 
          
      } else { 
          
         while ($row = mysql_fetch_row($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 == _UNIT_KILOMETERS) $dist = $dist * _M2KM_FACTOR; 
            if ($dist <= $range) { 
               $return[str_pad($row[0], 5, "0", STR_PAD_LEFT)] = round($dist, $this->decimals); 
            } 
         } 
         mysql_free_result($r); 
      } 
      
      // sort array 
      switch($sort) 
      { 
         case _ZIPS_SORT_BY_DISTANCE_ASC: 
            asort($return); 
            break; 
            
         case _ZIPS_SORT_BY_DISTANCE_DESC: 
            arsort($return); 
            break; 
            
         case _ZIPS_SORT_BY_ZIP_ASC: 
            ksort($return); 
            break; 
            
         case _ZIPS_SORT_BY_ZIP_DESC: 
            krsort($return); 
            break; 
      } 
      
      $this->last_time = $this->chronometer(); 
      
      if (empty($return)) return false; 
      return $return; 
   } 

   function chronometer()  { 
  
   // chronometer function taken from the php manual.  This is used primarily 
   // for debugging and anlyzing the functions while developing this class.  
  
   $now = microtime(TRUE);  // float, in _seconds_ 
   $now = $now + time(); 
   $malt = 1; 
   $round = 7; 
  
   if ($this->last_time > 0) { 
       /* Stop the chronometer : return the amount of time since it was started, 
       in ms with a precision of 3 decimal places, and reset the start time. 
       We could factor the multiplication by 1000 (which converts seconds 
       into milliseconds) to save memory, but considering that floats can 
       reach e+308 but only carry 14 decimals, this is certainly more precise */ 
      
       $retElapsed = round($now * $malt - $this->last_time * $malt, $round); 
      
       $this->last_time = $now; 
      
       return $retElapsed; 
   } else { 
       // Start the chronometer : save the starting time 
    
       $this->last_time = $now; 
      
       return 0; 
   } 
} 

}

youneek · April 15, 2007

Have you tried the below to try and get an error?

$result = mysql_query($query) or die(mysql_error());

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