Description:
------------
I ported some code from (https://github.com/facebookarchive/phpembed) to PHP 7. At least the init and function call parts. It works on Windows, but on OS X it crashes.

I have done a number of hacks that have gotten it to work on OS X, but am much confused about why it works that way. Actually, on review, it does not offer the same functionality. So I need either a proper init sequence for the embed module, or we have a crash. I can test any suggested updates and put together a test script.

From (https://github.com/facebookarchive/phpembed/blob/master/src/php_cxx.cpp) basic sequence of events:

----init_global_php----

#ifdef ZTS
  // PHPE: if they want threads, let's give them more than 1!
  tsrm_startup(128, 32, 0, NULL);
  compiler_globals = (zend_compiler_globals *)ts_resource(compiler_globals_id);
  executor_globals = (zend_executor_globals *)ts_resource(executor_globals_id);
  core_globals = (php_core_globals *)ts_resource(core_globals_id);
  sapi_globals = (sapi_globals_struct *)ts_resource(sapi_globals_id);
  tsrm_ls = (void ***)ts_resource(0);
#endif

  sapi_startup(&php_embed_module);

  if (php_embed_module.startup(&php_embed_module)==FAILURE) {
    return FAILURE;
  }

  zend_llist_init(&global_vars, sizeof(char *), NULL, 0);


///// Code fails with segmentation fault inside one of the ts_resource calls ////




//// Working Code on OS X ///////////

    tsrm_startup(2, 32, 0, NULL);
    
    int argc = 1;
    char* text = copy_literal("embed4");
    char *argv[2] = { text, NULL };
    php_embed_init(argc, argv);



/////////////////////////////////////


This working code I pulled from someone's git repo, and it contained the comment "////What is this? I pulled it from a textbook. Don't know what it does".


So this generates three questions
1. Should the code above that works on Windows work on Mac OS X?... If there is a bug.
2. What is the proper init sequence (if code #1 is a little big "off")?
3. Should there not be unit tests for php embed sapi? To what extent is debateable, but at least the startup/function call/parse script/run script/shutdown aspects.

I can make a reproducable case for this bug, but want to verify #2 before doing so.

Test script:
---------------
Will post when verified proper usage and tested it.

Expected result:
----------------
working code, as on Windows

Actual result:
--------------
Segfault inside ts_resource somewhere, and various other places depending on how code is commented/ordered.