pastebin - collaborative debugging

<?

include 'db.php';


$ep = $_REQUEST['finalpoint'];
$choice = $_REQUEST['method'];

// print_r ($_REQUEST);

$end = "'POINT(".$ep.")'" ;

$start = "select near_accident ($end,'$choice')";

 //echo $start;


$con = pg_connect("dbname=".$db." host=".$dbhost." user=".$dbuser." password=".$dbpass)
      or die ("PostgreSQL Error --> " . pg_last_error($con));

$query = pg_query($con, $start);

//echo $query;

    while ($row = pg_fetch_row($query)) {
          $source = $row[0];
}
// echo $source;


       $target = "select give_source('$source',1000,200)";
       $source = "select give_target('POINT(".$ep.")',1000,200)" ;
       $sql = "

              SELECT gid, astext(the_geom) as wkt, length(the_geom) AS length
              FROM shootingstar_sp
              ('streets',
                (
                select gid from streets where
                source = ( $source )
                limit 1
                )
              ,

                (
                select gid from streets where
                target = ( $target )
                limit 1

                )
              ,
              5000,
              'length',
              true,
              true
              );
       ";


  $xml  = '<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>'."\n";
  $xml .= "<route>\n";

  $query2 = pg_query($sql);
    // Add edges to XML file
  while($edge=pg_fetch_assoc($query2)) {

    $pathlength += $edge['length'];

    $xml .= "\t<edge id='".++$counter."'>\n";
    $xml .= "\t\t<id>".$edge['gid']."</id>\n";
    $xml .= "\t\t<wkt>".$edge['wkt']."</wkt>\n";
    $xml .= "\t\t<length>".round(($pathlength/1000),3)."</length>\n";
    $xml .= "\t</edge>\n";
  }

  $xml .= "</route>\n";

  pg_close($con);

  // Return routing result
 header('Content-type: text/xml',true);
  echo $xml;
?>