Hi jeff,
I'm using php mapscript from sample of routing application.
The script was look like this :
<?php
dl("php_mapscript.dll");

define("MAPFILE","../maps/routing.map");

$start=0;
$end=0;
$cx1=0;
$cy1=0;
$cx2=0;
$cy2=0;

if($HTTP_GET_VARS["start"])
$start=$HTTP_GET_VARS["start"];

if($HTTP_GET_VARS["end"])
$end=$HTTP_GET_VARS["end"];

if($HTTP_GET_VARS["cx1"])
$cx1=$HTTP_GET_VARS["cx1"];

if($HTTP_GET_VARS["cx2"])
$cx2=$HTTP_GET_VARS["cx2"];

if($HTTP_GET_VARS["cy1"])
$cy1=$HTTP_GET_VARS["cy1"];

if($HTTP_GET_VARS["cy2"])
$cy2=$HTTP_GET_VARS["cy2"];


$delta=0.01;

$map_file=MAPFILE;
$map=ms_newMapObj($map_file);

$l=$map->getLayerByName("network");
if($l) {
if($l && $start!=0 && $end!=0) {

if($cx1!=0 && $cy1!=0 && $cx2!=0 && $cy2!=0 &&
$cx1!=$cx2 && $cy1!=$cy2) {
$minx = min($cx1,$cx2)-$delta;
$miny = min($cy1,$cy2)-$delta;
$maxx = max($cx1,$cx2)+$delta;
$maxy = max($cy1,$cy2)+$delta;

$map->setextent($minx,$miny,$maxx,$maxy);

$rectobj = $map->extent;
$ll_x = $rectobj->minx;
$ll_y = $rectobj->miny;
$ur_x = $rectobj->maxx;
$ur_y = $rectobj->maxy;

$sql="the_geom from (select gid, the_geom from "."shortest_path_astar2_as_geometry_internal_id_directed('tercepat', ".$start.", ".$end.", ".$ll_x.", ".$ll_y.", ".$ur_x.", ".$ur_y.", false, true)) as g using unique gid using SRID=-1";

$l->set('data', $sql);
$l->set('status', MS_ON);

}
}
else {
$l->set('status', MS_OFF);
}
}
$image=$map->draw();
$image_url=$image->saveWebImage();

?>

Then I try to add this script at first php sections of gmap75.phtml,
but the result of that routing script didn't appear in my map window, it just shown in ms4w temp folder.

So The question is how to include this routing application in gmap template?.

Note : my gmap75.phtml using java mode only.