4.15. ProjectionObj Class

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• Constant names and class member variable names are case-sensitive in PHP.
• Several MapScript functions (all those that access files in the back end such as ms_newMapObj(), drawMap(), etc.) will affect the value of the current working directory (CWD) in the PHP environment. This will be fixed eventually but in the meantime you should be careful about these side-effects.

Constructor:
 
   ProjectionObjObj ms_newProjectionObj(string projectionstring)
       
  Creates a projection object based on the projection string passed
  as argument.
  Eg : $projInObj = ms_newprojectionobj("proj=latlong") will create a 
       geographic projection class.

  Eg of usage : the following example will convert a lat/long point to
  an LCC projection :  

       $projInObj = ms_newprojectionobj("proj=latlong");
       $projOutObj = ms_newprojectionobj("proj=lcc,ellps=GRS80,lat_0=49,".
                                         "lon_0=-95,lat_1=49,lat_2=77");
       $poPoint = ms_newpointobj();
       $poPoint->setXY(-92.0, 62.0);         
       $poPoint->project($projInObj, $projOutObj);

Next: QueryMapObj Class Previous: PointObj Class