Duplicate of bug #71996, which will be fixed in PHP 7.0.12.

Bug #73327 says this isn't resolved in 7.0.12.

This is the param encoding I get on PHP 7.0.12:

         <param0 xsi:type="SOAP-ENC:Struct">
            <Data SOAP-ENC:arrayType="ns2:Map[2]" xsi:type="SOAP-ENC:Array">
               <item xsi:type="ns2:Map">
                  <item>
                     <key xsi:type="xsd:string">Key</key>
                     <value xsi:type="xsd:string">A</value>
                  </item>
                  <item>
                     <key xsi:type="xsd:string">Value</key>
                     <value xsi:type="xsd:string">1</value>
                  </item>
               </item>
               <item xsi:type="ns2:Map">
                  <item>
                     <key xsi:type="xsd:string">Key</key>
                     <value xsi:type="xsd:string">B</value>
                  </item>
                  <item>
                     <key xsi:type="xsd:string">Value</key>
                     <value xsi:type="xsd:string">2</value>
                  </item>
               </item>
            </Data>
         </param0>

Not knowing anything about SOAP specifically, it looks correct to me. Are you sure you are running PHP 7.0.12?

Yeah, i'm running php 7.0.12 (phpinfo()... if you want more information tell me please).
Using the SoapClient::__getLastRequest() routine I have these results:

$soapClient->__getLastRequest()
Using array_push
<?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://tempuri.org/"> <SOAP-ENV:Body> <ns1:TestRoutineDictionary> <ns1:Data/> </ns1:TestRoutineDictionary> </SOAP-ENV:Body> </SOAP-ENV:Envelope> 

Using index assign
<?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns:ns2="http://tempuri.org/"> <SOAP-ENV:Body> <ns2:TestRoutineDictionary> <ns2:Data> <ns1:KeyValueOfstringstring> <ns1:Key>A</ns1:Key> <ns1:Value>1</ns1:Value> </ns1:KeyValueOfstringstring> <ns1:KeyValueOfstringstring> <ns1:Key>B</ns1:Key> <ns1:Value>2</ns1:Value> </ns1:KeyValueOfstringstring> </ns2:Data> </ns2:TestRoutineDictionary> </SOAP-ENV:Body> </SOAP-ENV:Envelope> 

I think these informations can help you.
Best regards
Matteo V.

I also tried the two methods with PHP version 5.6.9: the results are same:

<?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns:ns2="http://tempuri.org/"> <SOAP-ENV:Body> <ns2:TestRoutineDictionary> <ns2:Data> <ns1:KeyValueOfstringstring> <ns1:Key>A</ns1:Key> <ns1:Value>1</ns1:Value> </ns1:KeyValueOfstringstring> <ns1:KeyValueOfstringstring> <ns1:Key>B</ns1:Key> <ns1:Value>2</ns1:Value> </ns1:KeyValueOfstringstring> </ns2:Data> </ns2:TestRoutineDictionary> </SOAP-ENV:Body> </SOAP-ENV:Envelope>

Any news? I need this fix...

I just downloaded the PHP 7.0.12 NTS VC14 x64 build from http://windows.php.net/download/ and ran

    ./php.exe -dextension=`pwd`/ext/php_soap.dll test.php

Where test.php contains:

<?php

$client = new class(null, ['location' => '', 'uri' => 'http://example.org']) extends SoapClient {
    public function __doRequest($request, $location, $action, $version, $one_way = 0) {
        echo $request;
        return '';
    }
};
$argsSOAP = new StdClass();
$argsSOAP->Data = Array();
array_push($argsSOAP->Data, Array("Key"=>"A", "Value"=>"1"));
array_push($argsSOAP->Data, Array("Key"=>"B", "Value"=>"2"));
$client->TestRoutine($argsSOAP);

And received the output:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://example.org" xmlns:ns2="http://xml.apache.org/xml-soap" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><SOAP-ENV:Body><ns1:TestRoutine><param0 xsi:type="SOAP-ENC:Struct"><Data SOAP-ENC:arrayType="ns2:Map[2]" xsi:type="SOAP-ENC:Array"><item xsi:type="ns2:Map"><item><key xsi:type="xsd:string">Key</key><value xsi:type="xsd:string">A</value></item><item><key xsi:type="xsd:string">Value</key><value xsi:type="xsd:string">1</value></item></item><item xsi:type="ns2:Map"><item><key xsi:type="xsd:string">Key</key><value xsi:type="xsd:string">B</value></item><item><key xsi:type="xsd:string">Value</key><value xsi:type="xsd:string">2</value></item></item></Data></param0></ns1:TestRoutine></SOAP-ENV:Body></SOAP-ENV:Envelope>

Which is the expected output.

Which PHP build are you using? Is it a standard windows.php.net build or from some other packager? To preclude configuration problems, can you check what result you get when running directly from CLI (w/o server)?

Your test works! 

is Apache environment?
I'm using Apache/2.4.23. What's your suggestions?

I test with apache and php: 

with your test (with some updates):

<?php
$client = new class(null, ['location' => '', 'uri' => 'http://example.org', 'trace' => 1]) extends SoapClient {
    public function __doRequest($request, $location, $action, $version, $one_way = 0) {
        //echo $request;
        return '';
    }
};
$argsSOAP = new StdClass();
$argsSOAP->Data = Array();
array_push($argsSOAP->Data, Array("Key"=>"A", "Value"=>"1"));
array_push($argsSOAP->Data, Array("Key"=>"B", "Value"=>"2"));
$res = $client->TestRoutineDictionary($argsSOAP);
echo "REQUEST:<br>" . htmlspecialchars(str_ireplace('><', ">\n<", $client->__getLastRequest())) . "<br>";
?>

WORKS!!!!!

BUT

with "my" client:

<?php
$url = "http://mylink.org/myservice.svc?wsdl";
$client = new SoapClient($url, array('trace' => 1));
$argsSOAP = new StdClass();
$argsSOAP->Data = Array();
array_push($argsSOAP->Data, Array("Key"=>"A", "Value"=>"1"));
array_push($argsSOAP->Data, Array("Key"=>"B", "Value"=>"2"));
$res = $client->TestRoutineDictionary($argsSOAP);
echo "REQUEST:<br>" . htmlspecialchars(str_ireplace('><', ">\n<", $client->__getLastRequest())) . "<br>";
//echo "Response:<br>" . htmlspecialchars(str_ireplace('><', ">\n<", $client->__getLastResponse())) . "<br>";
?>

appears the problem:

<?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://tempuri.org/"> <SOAP-ENV:Body> <ns1:TestRoutineDictionary> <ns1:Data/> </ns1:TestRoutineDictionary> </SOAP-ENV:Body> </SOAP-ENV:Envelope>

I await your response

The issue persists with PHP Version 7.0.13! I rewrite my code to remake the question simplified:

$url = "wwwp.example.com/hello.svc?wdsl";
$options = Array("trace"=>1);

//FIRST METHOD!!! (not working)
$soapClient = new SoapClient($url, $options);
$argsSOAP = new StdClass();
$argsSOAP->Data = Array();
array_push($argsSOAP->Data, Array("Key"=>"A", "Value"=>"1"));
array_push($argsSOAP->Data, Array("Key"=>"B", "Value"=>"2"));
$resSOAP = $soapClient->TestRoutineDictionary($argsSOAP);
echo "REQUEST:<br>" . htmlspecialchars(str_ireplace('><', ">\n<", $soapClient->__getLastRequest())) . "<br>";
echo "Response:<br>" . htmlspecialchars(str_ireplace('><', ">\n<", $soapClient->__getLastResponse())) . "<br>";

echo "\n\n<hr>\n\n";

//SECOND METHOD (working...)
$soapClient2 = new SoapClient($url, $options);
$argsSOAP2 = new StdClass();
$argsSOAP2->Data = Array();
$argsSOAP2->Data[0] = Array("Key"=>"A", "Value"=>"1");
$argsSOAP2->Data[1] = Array("Key"=>"B", "Value"=>"2");
$resSOAP2 = $soapClient2->TestRoutineDictionary($argsSOAP2);
echo "REQUEST:<br>" . htmlspecialchars(str_ireplace('><', ">\n<", $soapClient2->__getLastRequest())) . "<br>";
echo "Response:<br>" . htmlspecialchars(str_ireplace('><', ">\n<", $soapClient2->__getLastResponse())) . "<br>";

I execute this script with php.exe (without apache!)
The results are different!
In the first result is missing "http://schemas.microsoft.com/2003/10/Serialization/Arrays"...

Please help me.

Matteo

The problem persist.... Please help.

@matteo - if the php.exe works then this is probably not a bug in php but in your apache configuration. You should verify what dll apache uses, check your configuration for the LoadModule call for php and make sure it looks like this:

LoadModule php7_module "c:/php/php7apache2.dll"

Obviously the php7apache2.dll you reference here should be 7.0.12 or higher. This is also explained in the "install.txt" that is in the file you download from http://windows.php.net/download

@sjon: the problem persist without apache, executing manually in cmd the php.exe with a php test file.
Can you try this problem? Why you don't simulate it? It is easy, you need only an iis server, a simple wcf and the php code.
Am I the only person who has this problem?

Same problem with PHP 7.0.14.
Have you tried my code? Have you the same problem?

I've found another element which it can explain more considerations:
If I use

$argsSOAP->Data = Array();
array_push($argsSOAP->Data, Array("Key"=>"A", "Value"=>"1"));
array_push($argsSOAP->Data, Array("Key"=>"B", "Value"=>"2"));
$resSOAP = $soapClient->TestRoutineDictionary($argsSOAP);

the XML is wrong (read last posts). 
BUT... if I use a "support" variable called "tmparr":

$tmparr = Array();
array_push($tmparr, Array("Key"=>"A", "Value"=>"1"));
array_push($tmparr, Array("Key"=>"B", "Value"=>"2"));
$argsSOAP->Data = $tmparr;
$resSOAP = $soapClient->TestRoutineDictionary($argsSOAP);

IT WORKS!!!

Simple question... why?

I've applied a few more fixes in https://github.com/php/php-src/commit/4b2cc62e266cb39d0728dc473435fdf6ab4e8e89, based on guesswork as to where the issue might be. Can you please test a snapshot build (http://windows.php.net/snapshots/ from tomorrow) to see if the issue is resolved?

@nikic: With what snapshot?

Any one of the snapshot builds for 7.0, 7.1 or master should do. Doesn't matter which one you use.

PHP 7.0.14: The bug is still here
PHP 7.1: IT WORKS!!!!!!!!!!!!!!!!!!

Then can you check in 7.0.14?

Can you fix 7.0.14? I cannot use 7.1 because some extensions (sqlsrv) are not updated. Thanks!

To clarify, you're saying that the PHP 7.1 snapshot build works, but the PHP 7.0 snapshot does not? That's odd, because the change is in both branches.

Correct. 7.0.14 doesn't work. I download this version:

http://windows.php.net/downloads/releases/php-7.0.14-Win32-VC14-x64.zip

Files in zip are modified in 6 Dec 2016. Please check.
Thanks!

Hello and happy new year!!!
Have you checked the 7.0.14?
In the 7.1 the routine works!

There is a 7.0.15RC1 release (see http://windows.php.net/qa/) now which contains this fix. Can you please check it?

FINALLY! With version 7.0.15RC IT WORKS!
Last question: when will be released 7.0.15 version? XD

Thanks for verifying! I don't know the exact release date, but it will be approximately two weeks from now.

php code:
$server = new SoapServer('my.wsdl');
$server->setClass(Api::class);
$server->handle();

class Api
{
    public function receiveEDIMessages()
    {
        return array(
            'head' => null,
            'body' => array(
                'message' => 'text',
                'from' => '2352457999993',
                'to' => '2352456999994',
                'id' => 54370
            ),
        );
    }
}


WSDL (use rpc style):
<xsd:complexType name="bodyMessagesResponse">
	<xsd:complexContent>
		<xsd:restriction base="soapenc:Array">
			<xsd:attribute ref="soapenc:arrayType" wsdl:arrayType="tns:messageResponse[]"/>
		</xsd:restriction>
	</xsd:complexContent>
</xsd:complexType>
<xsd:complexType name="messageResponse">
	<xsd:sequence>
		<xsd:element name="message" type="xsd:string"/>
		<xsd:element name="from" type="xsd:string"/>
		<xsd:element name="to" type="xsd:string"/>
		<xsd:element name="id" type="xsd:integer"/>
	</xsd:sequence>
</xsd:complexType>


response php 5.6:
<SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http_://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http_://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:interface" xmlns:xsd="http_://www.w3.org/2001/XMLSchema" xmlns:xsi="http_://www.w3.org/2001/XMLSchema-instance" xmlns:ns2="urn:private" xmlns:SOAP-ENC="http_://schemas.xmlsoap.org/soap/encoding/">
   <SOAP-ENV:Body>
      <ns1:receiveEDIMessagesResponse>
         <receiveEDIMessagesReturn xsi:type="ns2:receiveEDIMessagesResponse">
            <head xsi:type="ns2:headResponse">
               <code xsi:type="xsd:int">0</code>
               <message xsi:nil="true"/>
            </head>
            <body SOAP-ENC:arrayType="ns2:messageResponse[1]" xsi:type="ns2:bodyMessagesResponse">
               <item xsi:type="ns2:messageResponse">
                  <message xsi:type="xsd:string">text</message>
                  <from xsi:type="xsd:string">2352457999993</from>
                  <to xsi:type="xsd:string">2352456999994</to>
                  <id xsi:type="xsd:integer">54370</id>
               </item>
            </body>
         </receiveEDIMessagesReturn>
      </ns1:receiveEDIMessagesResponse>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>


response php 7.x:
<SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http_://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http_://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:interface" xmlns:xsd="http_://www.w3.org/2001/XMLSchema" xmlns:xsi="http_://www.w3.org/2001/XMLSchema-instance" xmlns:ns2="urn:private" xmlns:ns3="http_://xml.apache.org/xml-soap" xmlns:SOAP-ENC="http_://schemas.xmlsoap.org/soap/encoding/">
   <SOAP-ENV:Body>
      <ns1:receiveEDIMessagesResponse>
         <receiveEDIMessagesReturn xsi:type="ns2:receiveEDIMessagesResponse">
            <head xsi:type="ns2:headResponse">
               <code xsi:type="xsd:int">0</code>
               <message xsi:nil="true"/>
            </head>
            <body SOAP-ENC:arrayType="ns3:Map[1]" xsi:type="ns2:bodyMessagesResponse">
               <item xsi:type="ns3:Map">
                  <item>
                     <key xsi:type="xsd:string">message</key>
                     <value xsi:type="xsd:string">text</value>
                  </item>
                  <item>
                     <key xsi:type="xsd:string">from</key>
                     <value xsi:type="xsd:string">2352457999993</value>
                  </item>
                  <item>
                     <key xsi:type="xsd:string">to</key>
                     <value xsi:type="xsd:string">2352456999994</value>
                  </item>
                  <item>
                     <key xsi:type="xsd:string">id</key>
                     <value xsi:type="xsd:string">54370</value>
                  </item>
               </item>
            </body>
         </receiveEDIMessagesReturn>
      </ns1:receiveEDIMessagesResponse>
   </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

!!!
problem only if SoapServer configured with "'cache_wsdl' => WSDL_CACHE_MEMORY"
!!!
if "'cache_wsdl' => WSDL_CACHE_DISK" or none the problem is not reproduced (works correct).

P.S.: correct php code from prev message:

class Api
{
    public function receiveEDIMessages()
    {
        return array(
            'head' => null,
            'body' => array(array(
                'message' => 'text',
                'from' => '2352457999993',
                'to' => '2352456999994',
                'id' => 54370
            )),
        );
    }
}