\n
" . $row["srvp_plz"] . ": ";
echo "(" . $row["srvp_longitude"] . ", " . $row["srvp_latitude"] . "): ";
if (isInZipcodeArea($row["srvp_longitude"], $row["srvp_latitude"], $row["srvp_plz"]))
echo "IN";
else
echo "OUT";
endwhile;
mysql_free_result($res);
*/
define ("MAX_SEARCH_RADIUS", 5); // in km
define ("MAX_SEARCHES" , 10); // max. Anzahl der Umkreissuchen
define ("GEO_EARTH_RADIUS" , 6371.0); // in km
//define ("DATABASE" , "phoenix_special");
define ("TBL_PLZ" , "phoenix_special.plz_geodb");
define ("FLD_BREITE" , "plzg_breite");
define ("FLD_LAENGE" , "plzg_laenge");
define ("FLD_PLZ_CODE" , "plzg_code");
/*
* Test der findZipcodeArea Funktion:
* Willkürliche Punkte finden
*
*/
/*
$pointLong = 13.734444;
$pointLat = 51.077499;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 9.974722;
$pointLat = 53.562500;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 9.956100;
$pointLat = 53.586899;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 9.946900;
$pointLat = 53.580002;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 9.966400;
$pointLat = 53.568100;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 8.859259;
$pointLat = 53.140369;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 8.703900;
$pointLat = 53.179699;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 13.398333;
$pointLat = 52.529167;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 13.404722;
$pointLat = 52.520557;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 13.448611;
$pointLat = 52.509445;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 13.660000;
$pointLat = 53.100361;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
$pointLong = 0.0;
$pointLat = 0.0;
echo "($pointLong, $pointLat): " . findZipcodeArea($pointLong, $pointLat) . "
";
*/
/*
* PLZ-Bereich finden, in dem der spezifizierte Punkt liegt
*
*/
getDb2Connection(); // Try to connect request server because of performance
function findZipcodeArea($pointLong, $pointLat)
{
// global $dbhost, $dblogin, $dbpassword;
global $db2;
trace_execution_time_start();
// $mysqlLink = mysql_connect($dbhost, $dblogin, $dbpassword)
// or reportDie (mysql_error($mysqlLink));
// mysql_select_db(DATABASE, $mysqlLink)
// or reportDie (mysql_error($mysqlLink));
$max_search_radius = 0;
$plz_sql = "";
// Umkreissuche über die umliegenden PLZ-Bereiche.
// Der Suchradius wird erhöht, wenn kein Bereich gefunden wurde,
// solange bis er gefunden wird (irgendwo musser ja sein).
do {
$max_search_radius += MAX_SEARCH_RADIUS;
if ($plz_sql != "")
$plz_sql_clause = " AND " . FLD_PLZ_CODE . " NOT IN ($plz_sql)";
$sqlQuery = "SELECT " . FLD_PLZ_CODE . " AS plz FROM " /* . DATABASE . "." */ . TBL_PLZ . " WHERE " .
"(ACOS((SIN(" . deg2rad($pointLat) . ")*SIN(RADIANS(" . FLD_BREITE . "))) + " . "(COS(" . deg2rad($pointLat) . ")*COS(RADIANS(" . FLD_BREITE . "))*COS(RADIANS(" . FLD_LAENGE . ")-" .
deg2rad($pointLong) . "))) * " . GEO_EARTH_RADIUS . ") < " . $max_search_radius . $plz_sql_clause;
// $res = mysql_query($sqlQuery, $mysqlLink) or reportDie ("Error in query: '$sqlQuery': " . mysql_error($mysqlLink));
$res = $db2->query($sqlQuery);
if (DB::isError($res)) reportDie ("$PHP_SELF: '$sqlQuery': " . $res->getMessage());
$i = 0;
// while ($row = mysql_fetch_array($res, MYSQL_ASSOC)):
while ($row = $res->fetch_assoc()):
//echo "$max_search_radius: " . $row["plz"] . "
";
if (isInZipcodeArea($pointLong, $pointLat, $row["plz"])) {
writeLog(trace_execution_time_stop() . " " . $row["plz"] . " (" . sprintf("%-13s", $pointLong) . ", " . sprintf("%-13s", $pointLat) . "), \$max_search_radius =" . sprintf("%2s", $max_search_radius) . " Km, \$plz_sql = $plz_sql");
return $row["plz"];
}
if ($plz_sql != "")
$plz_sql .= ",";
$plz_sql .= "'" . $row["plz"] . "'";
endwhile;
// mysql_free_result($res);
$res->free();
} while($max_search_radius < MAX_SEARCH_RADIUS * MAX_SEARCHES);
writeLog(trace_execution_time_stop() . " " . "*****" . " (" . sprintf("%-13s", $pointLong) . ", " . sprintf("%-13s", $pointLat) . "), \$max_search_radius =" . sprintf("%2s", $max_search_radius) . " Km, \$plz_sql = $plz_sql");
// mysql_close($mysqlLink);
return "";
}
/*
* Testen ob der Punkt in $pointDeg (Array von Länge, Breite) im PLZ-Bereich zipcode liegt
*
*/
function isInZipcodeArea($pointLong, $pointLat, $zipcode)
{
global $db2;
$plzp_polygons = $db2->getOne("SELECT plzp_polygons FROM phoenix_special.plz_polygon WHERE plzp_code = '$zipcode'");
$polygons = explode("|", $plzp_polygons);
foreach($polygons as $polygon) {
$polygonPointsX = array();
$polygonPointsY = array();
// $polygonPointsCnt = 0;
$points = explode(",", $polygon);
foreach($points as $point) {
list($plzp_x_deg, $plzp_y_deg) = explode(" ", $point);
array_push ($polygonPointsX, $plzp_x_deg);
array_push ($polygonPointsY, $plzp_y_deg);
// $polygonPointsCnt++;
}
// echo "
cn_PnPoly: ";
// if (cn_PnPoly($polygonPointsX, $polygonPointsY, $pointDeg[0], $pointDeg[1]))
// echo "IN
";
// else
// echo "OUT
";
// echo "pnpoly: ";
if (pnpoly($polygonPointsX, $polygonPointsY, $pointLong, $pointLat))
return true;
// echo "IN
";
// else
// echo "OUT
";
}
return false;
}
/*
* Quelle: http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html
*
* Original C-code:
*
* int pnpoly(int npol, float *xp, float *yp, float x, float y)
* {
* int i, j, c = 0;
* for (i = 0, j = npol-1; i < npol; j = i++) {
* if ((((yp[i]<=y) && (y P.y)) // an upward crossing
* || ((V[i].y > P.y) && (V[i+1].y <= P.y))) { // a downward crossing
* // compute the actual edge-ray intersect x-coordinate
* float vt = (float)(P.y - V[i].y) / (V[i+1].y - V[i].y);
* if (P.x < V[i].x + vt * (V[i+1].x - V[i].x)) // P.x < intersect
* ++cn; // a valid crossing of y=P.y right of P.x
* }
* }
* return (cn&1); // 0 if even (out), and 1 if odd (in)
*
* }
*
*/
/*
function cn_PnPoly($px, $py, $x, $y)
{
$n = count($px) - 1;
$cn = 0; // the crossing number counter
// loop through all edges of the polygon
for ($i = 0; $i < $n; $i++) { // edge from V[i] to V[i+1]
if ((($py[$i] <= $y) && ($py[$i + 1] > $y)) // an upward crossing
|| (($py[$i] > $y) && ($py[$i + 1] <= $y))) { // a downward crossing
// compute the actual edge-ray intersect x-coordinate
$vt = (float)($y - $py[$i]) / ($py[$i + 1] - $py[$i]);
if ($x < $px[$i] + $vt * ($px[$i + 1] - $px[$i])) // $x < intersect
++$cn; // a valid crossing of y=$y right of $x
}
}
return ($cn % 2); // 0 if even (out), and 1 if odd (in)
}
*/
function writeLog($log_text) {
// echo "[" . date("Y-m-d H:i:s O") . "] " . $log_text . "\n";
$today = getdate();
$fileHandle = @fopen("../log/pnpoly_" . $today['year'] . sprintf("%02d", $today['mon']) . ".log", 'a');
@fwrite($fileHandle, "[" . date("Y-m-d H:i:s") . "] " . $log_text . "\n");
@fclose($fileHandle);
return;
}
?>