Totally off the cuff....
$shape = ms_shapeObjFromWKT('POINT('+$x+' '+$y+')');
$shape = $shape->buffer($radius);
>
>From: Helen Eskina <hesk...@ubitech.com>
>To: mapserver-users@lists.osgeo.org
>Sent: Thu, December 17, 2009 3:50:20 PM
>Subject: [mapserver-users] How to draw a circle using MapScript?
>
> >
>>
>Hello List,
>
>I want to be able to draw a circle dynamically using PHP MapScript. The
>circle is defined by the coordinates of the centre and the radius in
>kilometers.
>I realize that the circle is a polygon and I should probably calculate all
>points. What is the best way to do it?
>
>I would really appreciate any help!
>
>Thank you,
>Helen
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