[php-src] Issue #15252: SOAP XML broken from since PHP 8.3.9 when using classmap constructor option

Issue: https://github.com/php/php-src/issues/15252 Author: brainfoolong ### Description A bit of a weird issue, hope you can follow. I am on a windows machine, downloading following php packages: https://windows.php.net/downloads/releases/archives/php-8.3.8-Win32-vs16-x64.zip https://windows.php.net/downloads/releases/archives/php-8.3.9-Win32-vs16-x64.zip When running the "test.php" from attached ZIP, i get different outputs, using no php.ini and just with soap extension enabled: Test-Script: [test.zip](https://github.com/user-attachments/files/16507706/test.zip) (You need the files from zip, it contains the WSDL and XSD files required. ### PHP 8.3.8 ``` D:\php-8.3.8-Win32-vs16-x64\php.exe -dextension=D:\php-8.3.8-Win32-vs16-x64\ext\php_soap.dll D:\test\test.php PHPVERSION: 8.3.8 XML: <?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/exchange/services/2006/types" xmlns:ns2="http://schemas.microsoft.com/exchange/services/2006/messages"><SOAP-ENV:Body><ns2:DeleteItem><ns2:ItemIds><ns1:ItemId Id="AAMkAGJjMzNlMDA4LTU5NzMtNDZmMS1hN2QwLWE5NDJhOTg4ZTE3ZABGAAAAAADor6LtxqzcTZY8k3FzncNoBwBqStc3k+YrRrwI06yPhA+DAAAAAAEPAABqStc3k+YrRrwI06yPhA+DAASvw7+bAAA=" ChangeKey="CQAAABYAAABqStc3k+YrRrwI06yPhA+DAASv1Zxc"/></ns2:ItemIds></ns2:DeleteItem></SOAP-ENV:Body></SOAP-ENV:Envelope> ``` ### PHP 8.3.9 or even PHP 8.3.10 ``` D:\php-8.3.9-Win32-vs16-x64\php.exe -dextension=D:\php-8.3.9-Win32-vs16-x64\ext\php_soap.dll D:\test\test.php PHPVERSION: 8.3.9 XML: <?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/exchange/services/2006/types" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns2="http://schemas.microsoft.com/exchange/services/2006/messages"><SOAP-ENV:Body><ns2:DeleteItem><ns2:ItemIds xsi:type="ns1:ItemIdType"/></ns2:DeleteItem></SOAP-ENV:Body></SOAP-ENV:Envelope> ``` You will notice that the output is different, PHP 8.3.9+ missing a significant part of the message and instead inserts a "xmlns:xsi" namespace for whatever reason. The error comes from the SOAP extension. When you just link PHP 8.3.9 to the .dll file from PHP 8.3.8 it just works also as expected. This behaviour resulting in SOAP is broken in this specific case starting from PHP 8.3.9 - We saw it on our automated tests after upgrade to PHP 8.3.9 from PHP 8.3.8 ### PHP Version PHP 8.3.9 or higher ### Operating System Windows