EDIT

<?php

/* 

 *  An attempt at automatic map generation using:

 *  - ogr2ogr - which will combine shape files

 *  - Google map creator - which will create the google maps from a single shape file.

 *

 *  This script returns JavaScript, therefore it can be embedded on ANY page!

 */

// We take as arguments to this script the two letter country codes of countries

// we wish to include within out map.  This means that we can easily expand this

// to include any world countries (not just African ones), althoughh this may require

// three letters!

// Following temp filename is used in the configuration section, and therefore needs to come

// before it.

$tmp_file_name = tempnam("/tmp","googlemaps");

$tmp_file_name = substr($tmp_file_name,5);

$tmp_file = "/tmp/".$tmp_file_name;

// Configuration -----------------------------------------------------------------------

$earth_shape_file    = dirname(__FILE__)."/country-earth.shp";

$maps_extensions  = array("dbf","shp","shx","prj","xml"); // Not too sure which of these IS needed.

$ogr2ogr_path    = "/usr/share/fwtools/bin_safe/ogr2ogr";

$gmap_creator_path  = "/var/www/html/sites/all/gmap/gmapcreator.jar";

if (!isset($_GET['apikey'])||$_GET['apikey']==""){

  ?>alert('EDIT GMap colourer: You must supply an API key');<?php

  exit;

}

$google_api_key    = $_GET['apikey'];

$gmap_settings_xml  = "<gmapcreator>

<apikey>".$google_api_key."</apikey>

<apiversion>2</apiversion>

<maptitle>Test Map</maptitle>

<shpfilename>".$tmp_file_name.".shp</shpfilename>

<outlinesenabled>true</outlinesenabled>

<maxzoomlevel>5</maxzoomlevel>

<datafield>IDR_ID</datafield>

<limitarea>false</limitarea>

<mapboundswgs84>

<minlat>-55.72056961021754</minlat>

<minlon>-180.0</minlon>

<maxlat>83.62303161612134</maxlat>

<maxlon>179.99981689453125</maxlon>

</mapboundswgs84>

<mapviewenvelope>

<minx>-2.1397475258323826E7</minx>

<maxx>2.139745487511628E7</maxx>

<miny>-9944658.00979416</miny>

<maxy>2.0852293210672483E7</maxy>

</mapviewenvelope>

<colourscale>

<isdiscrete>true</isdiscrete>

<colourThresholds>

<colourThreshold>

<colour>ff0000ff</colour>

<threshold>0.0</threshold>

<description>First Colour</description>

</colourThreshold>

</colourThresholds>

</colourscale>

</gmapcreator>

";

if (!isset($_GET['countries'])){

  // The countries have not been sent! Error.

  ?>alert('EDIT GMap colourer: You haven\'t supplied any countries');<?php

  exit;

}

// Get the countries.

$countries = split(",",$_GET['countries']);

// Extract each country from the "Earth shape" and add it to the previous.

// If this is the first country, there is no adding!)

for($i=0;$i<count($countries);$i++){

  $exec = $ogr2ogr_path . ' ' . $tmp_file . $i . '.shp -fid ' . ($countries[$i]-1) . ' ' . $earth_shape_file;

  exec($exec);

  if ($i==0){

    $exec = $ogr2ogr_path . ' ' . $tmp_file . '.shp ' . $tmp_file . $i . '.shp';

    exec($exec);

  }

  else{

    $exec = $ogr2ogr_path . ' -update -append ' . $tmp_file.'.shp ' . $tmp_file . $i . '.shp -nln ' . $tmp_file_name;

    exec($exec);

  }

}

// Once this is done, we can have a go at creating the GoogleMap from the command line.

// Firstly, create the settings file

file_put_contents($tmp_file.".xml",$gmap_settings_xml);

// Next copy the projection file

copy($maps_directory."projection.prj",$tmp_file.".prj");

// Mv the temp files to the semi temp folder, don't forget to delete them afterwards!

foreach($maps_extensions as $map_extension){

  @copy($tmp_file.".".$map_extension,"/var/www/html/sites/all/gmap".$tmp_file.".".$map_extension);

}

$exec = "cd /var/www/html/sites/all/gmap/tmp && /usr/bin/java -jar ".$gmap_creator_path." -dfile=".$tmp_file_name.".xml";

exec($exec);

?>

    var centreLat=3.477775573709623;

    var centreLon=10.218469619750977;

    var n_buttonText="Map"; //Text that shows up on the button for the custom layer (n=normal, s=sat)

    var s_buttonText="Satellite";

    var mapBounds=new GLatLngBounds(new GLatLng(-90,-180),new GLatLng(90,180));

    var map; //the GMap2 itself

    var opacity=0.75;

    function customGetTileURL(a,b) {

      //converts tile x,y into keyhole string

      if (b>5) { return "/sites/all/gmap/tmp/<?php echo $tmp_file_name; ?>-tiles/blank-tile.png"; };

      var c=Math.pow(2,b);

      var x=360/c*a.x-180;

      var y=180-360/c*a.y;

      var x2=x+360/c;

      var y2=y-360/c;

      var lon=x; //Math.toRadians(x); //would be lon=x+lon0, but lon0=0 degrees

      var lat=(2.0*Math.atan(Math.exp(y/180*Math.PI))-Math.PI/2.0)*180/Math.PI; //in degrees

      var lon2=x2;

      var lat2=(2.0*Math.atan(Math.exp(y2/180*Math.PI))-Math.PI/2.0)*180/Math.PI; //in degrees

      var tileBounds=new GLatLngBounds(new GLatLng(lat2,lon),new GLatLng(lat,lon2));

      if (!tileBounds.intersects(mapBounds)) { return "/sites/all/gmap/tmp/<?php echo $tmp_file_name; ?>-tiles/blank-tile.png"; };

        var d=a.x;

        var e=a.y;

        var f="t";

        for(var g=0;g<b;g++){

            c=c/2;

            if(e<c){

                if(d<c){f+="q"}

                else{f+="r";d-=c}

            }

            else{

                if(d<c){f+="t";e-=c}

                else{f+="s";d-=c;e-=c}

            }

        }

        return "/sites/all/gmap/tmp/<?php echo $tmp_file_name; ?>-tiles/"+f+".png"

    }

    function changeOpacity(op) {

  //this works as long as there are at least two map types

        var current=map.getCurrentMapType();

        if (current==map.getMapTypes()[0])

          map.setMapType(map.getMapTypes()[1]);

  else

    map.setMapType(map.getMapTypes()[0]);

        opacity=op;

        map.setMapType(current); //was map.getMapTypes()[1]

    }

    function getWindowHeight() {

        if (window.self&&self.innerHeight) {

            return self.innerHeight;

        }

        if (document.documentElement&&document.documentElement.clientHeight) {

            return document.documentElement.clientHeight;

        }

        return 0;

    }

    function resizeMapDiv() {

        //Resize the height of the div containing the map.

        //Do not call any map methods here as the resize is called before the map is created.

      var d=document.getElementById("map");

        var offsetTop=0;

        for (var elem=d; elem!=null; elem=elem.offsetParent) {

            offsetTop+=elem.offsetTop;

        }

        var height=getWindowHeight()-offsetTop-16;

        if (height>=0) {

            d.style.height=height+"px";

        }

    }

    function load() {

      if (GBrowserIsCompatible()) {

        resizeMapDiv();

        var copyright = new GCopyright(1,

                              new GLatLngBounds(new GLatLng(-90, -180),

                                                new GLatLng(90, 180)),

                              0,

                              "<a href=\"http://www.casa.ucl.ac.uk\">CASA</a>");

        var copyrightCollection = new GCopyrightCollection("GMapCreator");

        copyrightCollection.addCopyright(copyright);

        //create a custom G_NORMAL_MAP layer

        var n_tileLayers = [ G_NORMAL_MAP.getTileLayers()[0], new GTileLayer(copyrightCollection , 0, 17)];

        n_tileLayers[1].getTileUrl = customGetTileURL;

        n_tileLayers[1].isPng = function() { return false; };

        n_tileLayers[1].getOpacity = function() { return opacity; };

        var n_customMap = new GMapType(n_tileLayers, new GMercatorProjection(6), n_buttonText,

            {maxResolution:5, minResolution:0, errorMessage:"Data not available"});

        //create a custom G_SATELLITE_MAP layer

        var s_tileLayers = [ G_SATELLITE_MAP.getTileLayers()[0], new GTileLayer(copyrightCollection , 0, 17)];

        s_tileLayers[1].getTileUrl = customGetTileURL;

        s_tileLayers[1].isPng = function() { return false; };

        s_tileLayers[1].getOpacity = function() { return opacity; };

        var s_customMap = new GMapType(s_tileLayers, new GMercatorProjection(6), s_buttonText,

            {maxResolution:5, minResolution:0, errorMessage:"Data not available"});

        //Now create the custom map. Would normally be G_NORMAL_MAP,G_SATELLITE_MAP,G_HYBRID_MAP

        map = new GMap2(document.getElementById("map"),{mapTypes:[n_customMap,s_customMap]});

        map.addControl(new GLargeMapControl());

        map.addControl(new GMapTypeControl());

        map.enableContinuousZoom();

        map.setCenter(new GLatLng(centreLat, centreLon), 2, n_customMap);

        map.enableDoubleClickZoom();

        /*

            var point = new GLatLng(0,0);            

            var marker = new GMarker(point);

            GEvent.addListener(marker, "click", function() {

              marker.openInfoWindowHtml("More stuff");

            });

            map.addOverlay(marker);

        */

      }

    }