Using with PHP - Using Data String Method

Using Data String Method

FusionMaps XT can effectively be used with PHP to plot data over geographic locations. In this section and the following, we'll show examples on how to plot data on FusionMaps XT using various methods in PHP.

Even when used with PHP, FusionMaps XT internally uses JavaScript and XML/JSON to render the maps. The PHP Class code actually helps you output this JavaScript and XML/JSON. To aid your understanding of this section, we will recommend you to go through the following sections of documentation (if you have not already read them):

Creating your first map
Changing map dimensions
Configuring number formatting
Using XML or JSON as data source
Using JavaScript API of FusionMaps XT
Creating drill-down maps and LinkedCharts
Exporting maps as images or CSV
How FusionMaps XT works?

In this section, we will show a few basic examples to help you get started.

We'll cover following examples here:

Rendering map from array using Data String Method.
Rendering map from array using Data URL Method.
Rendering map using Form based data and
Rendering drill-down maps pulling data from database.

Here we will first declare an array and store data in it.
Then we will build the map XML by fetching data from the array.
Finally, we will relay the data in XML format to the FusionMaps XT to render the map.

The code discussed here is present in Download Package > Code > PHP > BasicExample folder.

We will be displaying the population of the continents using FusionMaps XT in this example. Here is the PHP code that has been used in the example.

BasicMapsArray.php contains the following code:

<HTML>
<HEAD>
<TITLE>FusionMaps XT- PHP Sample - Basic Example from array - Using Data String</TITLE>
<?php
/*
We've included ../Includes/FusionCharts.js, which contains functions
to help us easily embed the Maps.
*/
include("../Includes/FusionCharts.php");

// We've included FusionCharts.js, which helps in
// easy map rendering.
?>
<script language="javascript" src="../../Maps/FusionCharts.js"></script>
</HEAD>

<BODY>
<CENTER>
<h2><a href="http://www.fusioncharts.com" target="_blank">FusionMaps XT</a> Examples</h2>
<h4> Using Data String method <br>
Retrieving data stored in an Array </h4>
<?php
/*
Declare array to store world population
we use wolrd map with 8 entities/continents
this 2 dimensional array will store 8 rows of data for each continent of the map
first column of each row will store the Internal Id of each entity on the map
second column will store population data of each entity
*/

// Store population data
// Declare array entity
// array data assign

// Internal IDs of continents & respective population
$dataArray[0][1]="01"; // Asia
$dataArray[0][2]="3779000000"; // Population
$dataArray[1][1]="02"; // Europe
$dataArray[1][2]="727000000";// Population
$dataArray[2][1]="03"; // Africa
$dataArray[2][2]="877500000";// Population
$dataArray[3][1]="04"; // North America
$dataArray[3][2]="421500000";// Population
$dataArray[4][1]="05"; // South America
$dataArray[4][2]="379500000";// Population
$dataArray[5][1]="06"; // Central America
$dataArray[5][2]="80200000";// Population
$dataArray[6][1]="07"; // Oceania
$dataArray[6][2]="32000000";// Population
$dataArray[7][1]="08"; // Middle East
$dataArray[7][2]="179000000";// Population

// Declare $strXML to store Data String of the map
$strXML="";

// Opening MAP element
$strXML = "<map showLabels='1' includeNameInLabels='1' borderColor='FFFFFF' fillAlpha='80' showBevel='0' legendPosition='Bottom' >";

// Setting Color ranges : 4 color ranges for population ranges
$strXML .= "<colorRange>";
$strXML .= "<color minValue='1' maxValue='100000000' displayValue='Population : Below 100 M' color='CC0001' />";
$strXML .= "<color minValue='100000000' maxValue='500000000' displayValue='Population :100 - 500 M' color='FFD33A' />";
$strXML .= "<color minValue='500000000' maxValue='1000000000' displayValue='Population :500 - 1000 M' color='069F06' />";
$strXML .= "<color minValue='1000000000' maxValue='5000000000' displayValue='Population : Above 1000 M' color='ABF456' />";
$strXML .= "</colorRange><data>";

// Opening data element that will store map data
// Using Data from array for each entity
for($i=0;$i<=7;$i++){
$strXML .= "<entity id='" . $dataArray[$i][1] . "' value='" . $dataArray[$i][2] . "' />";
}
// closing data element
$strXML .= "</data>";

// closing map element
$strXML .= "</map>";

// Finally Rendering the World8 Maps with renderChart() php function present in FusionCharts.php (that we have inlcuded already)
// Since we're using Data String method, we provide a "" value for Data URL here

print renderChart("../../Maps/FCMap_World8.swf","",$strXML,"firstMap", 750, 460,0,0);

?>
</CENTER>
</BODY>
</HTML>

Steps involved in this code

First, we included two files:

FusionCharts.php
FusionCharts.js

<?php 

      ...

      include("../Includes/FusionCharts.php");

      ?>

<script language="javascript" src="../../Maps/FusionCharts.js"></script>

...

These two files contain functions to embed the map easily.

Then we declared an array $dataArray to store the population data for 8 continents. This is a 2-dimensional array, where the first column stores the Internal ID for all the continents and the second column stores respective population data.

Internal ID is a field which helps to identify each part of a map uniquely. Please go through the Map Specification Sheet to know the Internal IDs for each map used in FusionMaps XT.

// Internal IDs of continents & respective population 

$dataArray[0][1]="01"; // Asia

$dataArray[0][2]="3779000000"; // Population 

$dataArray[1][1]="02"; // Europe

$dataArray[1][2]="727000000";// Population

$dataArray[2][1]="03"; // Africa

$dataArray[2][2]="877500000";// Population

$dataArray[3][1]="04"; // North America

$dataArray[3][2]="421500000";// Population

$dataArray[4][1]="05"; // South America

$dataArray[4][2]="379500000";// Population

$dataArray[5][1]="06"; // Central America

$dataArray[5][2]="80200000";// Population

$dataArray[6][1]="07"; // Oceania

$dataArray[6][2]="32000000";// Population

$dataArray[7][1]="08"; // Middle East

$dataArray[7][2]="179000000";// Population

We defined a variable $strXML to store the entire XML data.

$strXML="";

      // Opening MAP element

$strXML = "<map showLabels='1' includeNameInLabels='1' borderColor='FFFFFF' fillAlpha='80' showBevel='0' legendPosition='Bottom' >";

The following code is used to define the color range for the map entities. Different colors show different range of population. The first range is for the regions where population ranges from 0 to 100000000 and it is shown in Red. The second range is for the regions where population ranges from 100000000 to 500000000 and it is shown in Yellow. The third range is from 500000000 to 1000000000 in dark green and the fourth range is 1000000000 and above in light green color.

// Setting Color ranges : 4 color ranges for population ranges

$strXML .= "<colorRange>";

$strXML .= "<color minValue='1' maxValue='100000000' displayValue='Population : Below 100 M' color='CC0001' />";

$strXML .= "<color minValue='100000000' maxValue='500000000' displayValue='Population :100 - 500 M' color='FFD33A' />";

$strXML .= "<color minValue='500000000' maxValue='1000000000' displayValue='Population :500 - 1000 M' color='069F06' />";

$strXML .= "<color minValue='1000000000' maxValue='5000000000' displayValue='Population : Above 1000 M' color='ABF456' />";

$strXML .= "</colorRange><data>";

Next we added the map data in <entity> elements iterating through the array elements. We use for loop for this.

// Opening data element that will store map data

// Using Data from array for each entity 

for($i=0;$i<=7;$i++){

$strXML .= "<entity id='" . $dataArray[$i][1] . "' value='" . $dataArray[$i][2] . "' />";

}

// closing  data element 

$strXML .= "</data>";

// closing map element

$strXML  .= "</map>";

Finally, we called renderChart() function and pass $strXML as Data String to render the map.

print renderChart("../../Maps/FCMap_World8.swf","",$strXML,"firstMap", 750, 460,0,0);

FusionCharts.php contains the function renderChart(). This helps us create the map simply by passing few parameters in a predefined sequence. The renderChart() function accepts following parameters in the same order as they are presented below:

Parameter	Description
mapSWF	SWF File Name (and Path) of the map which we want to plot. Here, we are plotting a World (having 8 continent segments) Map. So, we've specified it as ../../Maps/FCMap_World8.swf
strURL	If we use Data URL method to plot data over maps, we have to pass the URL as this parameter. Else, set it to "" (in case we use Data String method). In this case, we're using data XML method, hence we kept it blank.
strXML	If we use Data String method to plot data over maps, we have to pass the XML data as this parameter. Else, set it to "" (in case we are using of Data URL method). In this case, we're using Data String method, hence we passed strXML through this field.
mapId	The ID for the map by which it will be recognized in the HTML page. If we use multiple maps on the same page, then all the maps should have unique mapId. To provide cross-browser compatibility, we recommend you not to start the ID with a numerical value, nor use space as part of the ID.
mapWidth	Intended width for the map (in pixels)
mapHeight	Intended height for the map (in pixels)
debugMode	Whether to start the map in debug mode. Please see Debugging your Maps section for more details on Debug Mode.
registerWithJS	Whether to register the map with JavaScript.

Advanced note : Apart from renderChart()function, FusionCharts.php provides a number of functions (listed below) to ease your implementation. Click here to collapse and expand «

Function	Parameter	What it does?
renderChart()	see above	Returns a string containing HTML+JavaScript that renders a map.
renderChartHTML()	see above	Returns a string containing HTML that renders a map. This function is deprecated.
FC_SetDataFormat()	"xml" or "json"	Sets the data format for the data-source of the map. The data-source is set through dataStr or dataUrl parameter of renderChart or renderChartHTML. Default value is xml. When you set the value to json you need to pass JSON URL or JSON String through dataUrl or dataStr parameter. You need to call this function each time before you call renderChart or renderChartHTML function.
FC_SetRenderer()	"flash" or "javascript"	Sets the renderer-engine of FusionCharts. It can be flash (default value). When you set the value to javascript, you can force-set javascript renderer. You need to call this function each time before you call renderChart function. This setting is not applicable while using renderChartHTML function.
FC_EnablePrintManager()		This function helps you enable the managed print feature of FusionCharts for Mozilla- browsers. It returns a <script> tag . You need to write the string in your page.You need to call this only once in a page.
FC_SetWindowMode()	"window" or "transparent" or "opaque"	Sets window mode of a map. By default, map renders in "opaque" mode. You can set to it "window" if you required. You need to call this function each time before you call the renderChart or renderChartHTML function.

Below is the screenshot of the map used for this example.

Existing users: Use of FusionMaps.php is deprecated. Use FusionCharts.php instead. However, after upgrading to FusionMaps XT, your existing implementations using FusionMaps.php will continue to work without any problem.