Writing Thread Safe PHP extensions in Visual C++ for PHP8.2.8

Question

I am trying - and failing - to produce a Thread Safe PHP extension DLL.

I use PHP in a WAMP environment and code with both C++ and PHP. Now, I'm just trying to develop my first PHP extension (Module) in Visual C++, but have reached a brick wall.

Maybe someone can help?

I'm completely stumped, so any positive advice or assistance gratefully received.

I'm running PHP 8.2.8 TS 64-bit through an Apache 2.4.x web server on Windows Server I'm using: Visual Studio 2022 using Windows SDK 10 and the same platform API as the PHP (API20220829)

Preprocessor definitions: ZEND_THREAD_SAFE; ZEND_WIN32; PHP_WIN32 Linked to: php8ts.php

Language Standard: ISO C++ 14

Runtime Library: Multi-threaded DLL (/MD)

It compiles, links and dlivers the php_helloworld.dll

I have chosen every option I can to produce a THREAD SAFE version and I am using the downloaded PHP8.2.8 TS 64-bit TS development pack. ( php-devel-pack-8.2.8-Win32-vs16-x64 ).

However, I get the following error every time, telling me it is NON THREAD SAFE.

PHP Warning: PHP Startup: php_helloworld: Unable to initialize module:

Module compiled with build ID=API20220829,NTS,VS16

PHP compiled with build ID=API20220829,TS,VS16

I have tried changes and tweaks to the configuration for 3 days and always the same result.

It is a very simple, single CPP file with following code, just to test it out:

// dllmain.cpp : Defines the entry point for the DLL application.
#include "pch.h"
#include "php.h"

#define ZEND_DEBUG 0

// Declare the function
PHP_FUNCTION(php_helloworld);

// register our function to the PHP API
// so that PHP knows, which functions are in this module
zend_function_entry php_helloworld_functions[] =
{
PHP_FE(php_helloworld, NULL)
{
NULL, NULL, NULL
}
};

// some pieces of information about our module
zend_module_entry php_helloworld_module_entry =
{
STANDARD_MODULE_HEADER,
"php_helloworld", // Extension name
php_helloworld_functions, // Function entry
NULL, // Module initialization
NULL, // Module shutdown
NULL, // Request initialization (not used)
NULL, // Request shutdown (not used)
NULL, // Extension info (not used)
"1.0", // Extension version
STANDARD_MODULE_PROPERTIES
};

// use a macro to output additional C code, to make ext dynamically loadable
ZEND_GET_MODULE(php_helloworld)

// Finally, we implement our "Hello World" function
// this function will be made available to PHP
// and prints to PHP stdout using printf
PHP_FUNCTION(php_helloworld)
{
php_printf("Hello World! (from our extension)\n");
}