Description:
------------
When WSDL caching is enabled and cache in memory option is used, and WSDL consists of several files imported by using <xsd:import /> tag, PHP interpreter exit code appears to be 1 instead of 0.

PHP 7.0.10 (cli) (built: Aug 19 2016 18:46:19) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies
    with Zend OPcache v7.0.10, Copyright (c) 1999-2016, by Zend Technologies

root@0d2dbb96cd17:/data# php -i | grep soap                        
/usr/local/etc/php/conf.d/docker-php-ext-soap.ini,
soap
soap.wsdl_cache => 1 => 1
soap.wsdl_cache_dir => /tmp => /tmp
soap.wsdl_cache_enabled => 1 => 1
soap.wsdl_cache_limit => 5 => 5
soap.wsdl_cache_ttl => 86400 => 86400

root@0d2dbb96cd17:/data# php -d soap.wsdl_cache=0 test.php; echo $?
0
root@0d2dbb96cd17:/data# php -d soap.wsdl_cache=1 test.php; echo $?
0
root@0d2dbb96cd17:/data# php -d soap.wsdl_cache=2 test.php; echo $?
1
root@0d2dbb96cd17:/data# php -d soap.wsdl_cache=3 test.php; echo $?
1


Configure Command =>  './configure'  '--with-config-file-path=/usr/local/etc/php' '--with-config-file-scan-dir=/usr/local/etc/php/conf.d' '--disable-cgi' '--enable-ftp' '--enable-mbstring' '--enable-mysqlnd' '--with-curl' '--with-libedit' '--with-openssl' '--with-zlib' '--enable-fpm' '--with-fpm-user=www-data' '--with-fpm-group=www-data'


Test script:
---------------
test.php:

<?php

$wsdl = 'https://api.hermes-dpd.ru/ws/webservice.svc?wsdl';
$bu   = '5';

$soapClient = new SoapClient($wsdl, ['soap_version' => SOAP_1_1]);

try {
    $result = $soapClient->GetParcelShops(['businessUnitCode' => $bu]);
} catch (\Exception $e) {
}


Expected result:
----------------
Interpreter exit code is 0.

Actual result:
--------------
Interpreter exit code is 1 when WSDL caching in memory is enabled and WSDL consists of several files.