geos Bufferring mapserver 4.10

[abul khayer]

i am a begainner in the mapserver World... i have
completed only one 
simple project just for viewing map, have no analysis.

now i contiue a project using php mapsript but now
fall in great problem.
i have shape file(.shp) containnig roads network. i
have to create a buffer 
area of this raods network arround 10 km. using this
buffer area
i have to clip/select agricultural land from another
shape shape file.

i can create buffer using 
$shp=roadlayer->getshape(-1,0);
$shp->buffer(10);
but it create buffer for only one road not the whole
network... 

plz give me the idea which process i have to follow to
complete
 my project..


my configuration:
mapserver 4.10(windows)
php mapscript
windows 2k


Mohammad Abul Khayer
Consultant,
Center for Environmental and Geographic Information Services
(CEGIS)


 
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