Add Layer, Query and Reproject

Here's a small example which:

• opens a mapfile
• adds a new layer
• queries and new layer
• reprojects output map
• draws and saves to file

Example based on ​http://dl.maptools.org/dl/omsug/osgis2004/php_mapscript_mum2.ppt in response to ​http://n2.nabble.com/Problems-with-MapScript-and-setProjection-tt2291579.html#none

<?php

// load mapscript
dl("php_mapscript.so");

// add map
$map = ms_newMapObj("config.map");

// add new layer to map
$layer = ms_newLayerObj($map);
$layer->set("name", "foo");
$layer->set("status", MS_ON);
$layer->set("data", "path/to/file.shp");
$layer->set("type", MS_LAYER_POINT);
$layer->setProjection("init=epsg:4326");
$layer->set("template", "ttt");
$layer->set("dump", "true");

// add new class to new layer
$class = ms_newClassObj($layer);
$class->set("name", "foo");

// add new style to new class
$style = ms_newStyleObj($class);
$style->set("symbol", 2);
$style->set("size", 8);
$style->color->setRGB(255, 0, 0);

// create new rect to query against the new layer
$rect = ms_newRectObj();
$rect->setExtent(-95, 40, -50, 60);

// query new layer
$layer->queryByRect($rect);

// set projection of output map
$map->setProjection("init=epsg:42304", MS_TRUE);
// draw
$image=$map->drawQuery();
$image->saveImage("/tmp/out.png");

?>