Description:
------------
php complains about string not being valid utf-8. Now the code works with 5.0.0 compiled against libxml2-2.6.13 but not with 5.0.1. It's the function xmlCheckUTF8 (in libxml2) that returns the value causing the error message.


Reproduce code:
---------------
<?php
$client = new SoapClient("http://xml.whereisthatip.com/ip-location-service.wsdl");

$queryresult = $client->getLocationRequest("192.48.96.9");

echo "$queryresult\n";;
?>

Expected result:
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US


Actual result:
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Fatal error: Uncaught SoapFault exception: [SOAP-ENV:Client] SOAP-ERROR: Encoding: string '192.48.96.9' is not a valid utf-8 string in /data/www/PRO/html/pcs/test.php:5
Stack trace:
#0 /data/www/PRO/html/pcs/test.php(5): SoapClient->getLocationRequest('getLocationRequ...', Array)
#1 {main}
  thrown in /data/www/PRO/html/pcs/test.php on line 5