[mapserver-users] drawing layer with user names from mysql table UPDATE

[Stephen Woodbridge]

Great your making progress. 

Now you need to read the posts over the last two/three days with the
subject "Drawing features dynamically" which explains exactly how to do
what you are asking.

http://mapserver.gis.umn.edu/cgi-bin/wilma/mapserver-users

-Steve

Jan Mantkowski wrote:
> 
> Hi Steve, Dan, List,
> 
> i did some work in the meantime:
> 
> I get this right now:
> 
> Map name=FIRSTMAP, num lay=3
> Layer num=0, name=world
> Layer num=1, name=Nations
> Layer num=2, name=PNUsers
> 
> -0.1271    51.5063    Jan London
> -3.7057    40.4203    Jose Madrid
> 2.3453    48.8547    Madeleine Paris
> 9.9898    53.5548    Fritz Hamburg
> 
> and a map exactly as in the original europe example.
> 
> So what to do to display the users?
> 
> Jan
> 
> 1) I replaced the PNUser layer with a copy of the nations layer.
> 
>         I only changed two lines:
> 
>     LAYER
>     NAME "PNUsers"
>     DATA users
> 
> My php script now looks like this:
> Can it be, that $image is used for 2 completely different things, and the
> second one replaces the results of the first one?
> 
> <?php
> 
> // load .dll`s, so there is no need to edit the php.ini.
> // but you need to put this files in your /php/extensions folder
> 
> dl("php_mapscript_35.dll");
> dl("php_proj.dll");
> dl("php_dbase.dll");
> 
> //variables
> 
> GLOBAL $map;
> GLOBAL $image;
> GLOBAL $layer;
> $layerName="PNUsers";
> 
> $map
> =ms_newMapObj("c:/Apache/htdocs/pn_71/html/modules/map/data/europe.map");
> 
> printf("Map name=%s, num lay=%d<br>\n", $map->name, $map->numlayers);
> for ($i=0; $i<$map->numlayers; $i++) {
>   $myLayer = $map->getLayer($i);
>   printf("Layer num=%d, name=%s <br>\n", $i, $myLayer->name);
> }
> echo"<br>";
> 
> //mysql_q
> $db = mysql_connect("localhost", "root", "");
> mysql_select_db("Rogue",$db);
> $results = mysql_query("SELECT * FROM nuke_map",$db);
> if ($results === false) die("failed");
> //display result of mysql query on screen
> while ($show = mysql_fetch_array($results, MYSQL_ASSOC)) {
> echo
> $show["pn_lon"]."&nbsp;&nbsp;&nbsp;&nbsp;".$show["pn_lat"]."&nbsp;&nbsp;&nbs
> p;&nbsp;".$show["pn_name"]."<br>\n";
> }
> 
> //drawPoints
> $layer =  $map->getLayerByName( $layerName );
> 
>    // Loop through result of point query and:
>    while ($line = mysql_fetch_array($results, MYSQL_ASSOC)) {
>                  $pt = ms_newPointObj();
>                  $pt->setXY( $line["pn_lon"], $line["pn_lat"] );
>                  $pt->draw($map, $layer, $image, 0, "TEST");
>                  $layer->set('status', MS_ON);
>                  $layer->draw($image);
> 
>          }
> 
> //show it altogether
> $image=$map->draw();
> $layer->draw($image);
> $image_url=$image->saveWebImage(MS_PNG,1,1,0);
> echo "<img src=\"".$image_url."\">";
> ?>