How to obtain an orphan boolean xml value from a string - php

Question

I'm working with an API which is returning some XML data that I'm unable to obtain.
When a login has been successful the session key becomes authenticated and the API returns the the boolean value 'true'.
This is formatted as follows:
This XML file does not appear to have any style information associated with it.
document tree is shown below.
<boolean xmlns="http://tessiturasoftware.com/">true</boolean>
Where other XML data has been formatted with more of a nested structure I've been able to use the following PHP to extract the data
$prodresponse = curl_exec($getproductions);
if(curl_errno($getproductions))
{
echo 'Curl error: Unable to obtain session ID ' . curl_error($getproductions);
}
else{
$xmlContent = simplexml_load_string($prodresponse);
echo $prodresponse;
foreach($xmlContent->xpath('//Production')as$prod){
$prodid= $prod->prod_season_no;
echo "<form action='GetProductionDetail.php' method='GET'>";
echo "<h1>".$prod->prod_desc." </h1> <input type='submit' value='Book Now'>
<input type='hidden' name='prodid' value=$prodid /></form>";
}
}
However when I attempt to use the following to return the boolean value and move to the account details page, no data is returned
$response2 = curl_exec($login);
$xmlContent = simplexml_load_string($response2);
if(curl_errno($login))
{
echo 'Curl error: Unable to login ' . curl_error($login);
}
else {
echo 'test';
foreach($xmlContent->xpath('boolean') as $bool) {
echo $bool;
echo 'test';
}
if ($bool=='true'){
echo'test';
header("Location: GetAccountDetails.php");
}
}
Please could someone tell me if I'm doing something wrong, whether it's to do with the simplexml_load_string or whether it would help to create a simpleXMLObject etc...?
Thanks
Caspian

Answer 1

The XML has a namespace definition. So the "real/internal" name of the element is {http://tessiturasoftware.com/}:boolean. To fetch this element without ignoring the namespace, you need to register a prefix for it. SimpleXML has the method registerXpathNamespace() for that. After that you can use the prefix as an alias for the namespace string. If you register tess the element can be addressed as tess:boolean.
I prefer DOM because it allows me to do more complex Xpath, like casting the result to string and compare it.
$dom = new DOMDocument();
$dom->loadXml('<boolean xmlns="http://tessiturasoftware.com/">true</boolean>');
$xpath = new DOMXpath($dom);
$xpath->registerNamespace('tess', 'http://tessiturasoftware.com/');
var_dump(
$xpath->evaluate('string(/tess:boolean) = "true"')
);
Program Output
bool(true)

Answer 2

int number= getResources().getInteger(R.integer.yourNumber);