PHP - Get value from xml file - php

Question

Using the following xml: http://www.bnr.ro/nbrfxrates.xml
How can I get the EUR value?
Been trying like this ... but no luck.
$xmlDoc = new DOMDocument();
$xmlDoc->load('http://www.bnr.ro/nbrfxrates.xml');
$searchNode = $xmlDoc->getElementsByTagName("Cube");
var_dump($searchNode);
foreach ($searchNode as $searchNode) {
$valueID = $searchNode->getAttribute('Rate');
echo $valueID;
}

Answer 1

Check this
<?php
$xmlDoc = new DOMDocument();
$xmlDoc->load('http://www.bnr.ro/nbrfxrates.xml');
foreach ($xmlDoc->getElementsByTagName('Rate') as $searchNode) {
if($searchNode->getAttribute('currency') === 'EUR') {
echo $searchNode->nodeValue;
}
}
?>

Answer 2

First Rate is not an attribute but an element. So you would need another getElementsByTagName('Rate') and loop over it. However the XML uses a default namespace so getElementByTagNameNS('http://www.bnr.ro/xsd', 'Rate') would be the correct way.
An easier way is to use Xpath to fetch the value directly:
$document = new DOMDocument();
$document->load('http://www.bnr.ro/nbrfxrates.xml');
$xpath = new DOMXpath($document);
$xpath->registerNamespace('r', 'http://www.bnr.ro/xsd');
var_dump(
$xpath->evaluate('number(//r:Cube/r:Rate[#currency="EUR"])')
);
Output:
float(4.4961)
Xpath does not have a default namespace, so you have to register your own alias for it (I used r in the example.).
The Xpath expression
fetch any {http://www.bnr.ro/nbrfxrates.xml}Cube
//r:Cube
fetch all {http://www.bnr.ro/nbrfxrates.xml}Rate children
//r:Cube/r:Rate
filter by the currency attribute
//r:Cube/r:Rate[#currency="EUR"]
cast the first found node into a number
number(//r:Cube/r:Rate[#currency="EUR"])

Answer 3

<?php
$xmlDoc = new DOMDocument();
$xmlDoc->load('http://www.bnr.ro/nbrfxrates.xml');
foreach($xmlDoc->getElementsByTagName("Rate") as $node)
{
$currency = $node->getAttribute('currency');
if($currency == 'EUR')
{
$value = $node->nodeValue;
}
}
echo 'value for EUR is - '. $value;
?>