World Bank Data API: Converting links to data?

Hello,

The World Bank website currently allows anyone to use it's worldwide data

In the above page, the World bank provides a basic call structure format. Following this protocol, I have generated links such as:
Surface area (sq. km) of Ethiopia: http://api.worldbank.org/countries/ETH/indicators/AG.SRF.TOTL.K2?MRV=1&Gapfill=Y

Entering the above link into a url, returns the following data:

<wb:data xmlns:wb="http://www.worldbank.org" page="1" pages="1" per_page="50" total="1">
<wb:data>
<wb:indicator id="AG.SRF.TOTL.K2">Surface area (sq. km)</wb:indicator>
<wb:country id="ET">Ethiopia</wb:country>
<wb:date>2014</wb:date>
<wb:value>1104300</wb:value>
<wb:decimal>0</wb:decimal>
</wb:data>
</wb:data>

Open in new window


I'm not a programmer, but all I want to be able to do is grab the <wb:value> of 1104300 above and add it to a webpage, for multiple url links.

E.g my website would have 10 separate pages (one for each country) and on each of these pages would be the label: Surface area (sq. km): alongside the pulled World Bank data from the above url.

How would I approach this?
LVL 1
dabug80Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Shalom CarmelCTOCommented:
I didn't know that about the world bank :)

You need some code and programming to extract the value from the XML. Which language do your programmers use, or which language is used on you web site?

There are 2 general approaches:
* Do it on the server. If your web site uses ruby code, then the logic of retrieving the links, parsing the XML and displaying it in context, will be written in ruby.

* Do it on the client. You will write Javascript code that runs in the browser to retrieve the links, parse the XML and display it in context.
0
Shalom CarmelCTOCommented:
Just checked - you can't do it client-side in Javascript, because the CORS headers are missing on the World Bank API :(
0
Shalom CarmelCTOCommented:
Here is a php snippet that does the job

 
<?php 
function httpGet($url)
{
    $ch = curl_init();  
 
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
//  curl_setopt($ch,CURLOPT_HEADER, false); 
    curl_setopt($ch,CURLOPT_ENCODING , "gzip");

    $output=curl_exec($ch);
 
    curl_close($ch);
    return $output;
}
 
 

$xmlString=httpGet("http://api.worldbank.org/countries/ETH/indicators/AG.SRF.TOTL.K2?MRV=1&Gapfill=Y"); 

$xml=simplexml_load_string( $xmlString ) or die("Error: Cannot create object");
// This gets all nodes in namespace wb that is used inside the XML file
$wb = $xml->children("wb",true);
// print_r($wb); 

echo "<p>"; 
echo "country: " . $wb->data[0]->country . "<br>";
echo "Area: " . $wb->data[0]->value; 


?>

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
dabug80Author Commented:
Excellent. Thanks for taking the time to code and explain. Really appreciate it.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
XML

From novice to tech pro — start learning today.