Mantis Bug Tracker SOAP API Response XML Error - soap

Question

I am using Mantis Bug Tracker SOAP API, but unfortunately every time it returns to me message like
"looks like we got no XML document",
after tracing the last response I got following message
"<?xml version="1.0" encoding="ISO-8859-1"?><SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body><SOAP-ENV:Fault><faultcode xsi:type="xsd:string">Client</faultcode><faultactor xsi:type="xsd:string"></faultactor><faultstring xsi:type="xsd:string">Issue does not exist.</faultstring><detail xsi:type="xsd:string"></detail></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>"
I hope that, I am getting xml respose back, it appears that there is a addition of "" characters in the beginning.
Any clue or help would be great, in removing those characters.
The code for connecting to MANTIS SOAP API SERVER
<?php
$c = new \SoapClient("http://dev06/api/soap/mantisconnect.php?wsdl", array('trace'=> true, 'encoding'=>' UTF-8', 'soap_version'=>1.2));
$username = "xxxxx";
$password = "xxxxx";
try {
$c->mc_issue_get(trim($username), trim($password), 2331);
} catch (SoapFault $exception) {
var_dump($c->__getLastResponse());
}
?>

Answer 1

I don't see any issue with your code and it works perfectly in my environment with slight modifications:
$c = new \SoapClient("http://localhost/demo/mantisbt-1.2.15/api/soap/mantisconnect.php?wsdl", array('trace'=> true, 'encoding'=>' UTF-8', 'soap_version'=>SOAP_1_2));
$username = "XXXXXXXX";
$password = "XXXX";
try {
$issue = $c->mc_issue_get(trim($username), trim($password), 31);
var_dump($issue);
} catch (SoapFault $exception) {
var_dump($c->__getLastResponse());
}
It could be the soap_version, so may be you could try with soap_version=SOAP_1_1

Answer 2

Oh...!
Finally got the solution for it. Its very simple.
Firstly mantis SOAP API code base contains may be more than 20,000 lines of code. I think there is some where some one is printing some BOM characters.
So best solution would be, just use following function,
ob_clean();
This function must be used in
/library/nusoap/nusoap.php
Because this file has
send_response()
That printouts payload, So just use ob_clean() at the beginning of the send_response() function.
Thanks and hope it will help others.