php运行生命周期--请求初始化php_request_startup

PHPAPI int php_output_activate(void)
{
#ifdef ZTS
    memset((*((void ***) ZEND_TSRMLS_CACHE))[TSRM_UNSHUFFLE_RSRC_ID(output_globals_id)], 0, sizeof(zend_output_globals));
#else
    memset(&output_globals, 0, sizeof(zend_output_globals));
#endif

    zend_stack_init(&OG(handlers), sizeof(php_output_handler *));
    OG(flags) |= PHP_OUTPUT_ACTIVATED;

    return SUCCESS;
}

SAPI_API void sapi_activate(void)
{
    zend_llist_init(&SG(sapi_headers).headers, sizeof(sapi_header_struct), (void (*)(void *)) sapi_free_header, 0);
    SG(sapi_headers).send_default_content_type = 1;

    /*
    SG(sapi_headers).http_response_code = 200;
    */
    SG(sapi_headers).http_status_line = NULL;
    SG(sapi_headers).mimetype = NULL;
    SG(headers_sent) = 0;
    ZVAL_UNDEF(&SG(callback_func));
    SG(read_post_bytes) = 0;
    SG(request_info).request_body = NULL;
    SG(request_info).current_user = NULL;
    SG(request_info).current_user_length = 0;
    SG(request_info).no_headers = 0;
    SG(request_info).post_entry = NULL;
    SG(request_info).proto_num = 1000; /* Default to HTTP 1.0 */
    SG(global_request_time) = 0;
    SG(post_read) = 0;
    /* It's possible to override this general case in the activate() callback, if necessary. */
    if (SG(request_info).request_method && !strcmp(SG(request_info).request_method, "HEAD")) {
        SG(request_info).headers_only = 1;
    } else {
        SG(request_info).headers_only = 0;
    }
    SG(rfc1867_uploaded_files) = NULL;

    /* Handle request method */
    if (SG(server_context)) {
        if (PG(enable_post_data_reading)
        &&  SG(request_info).content_type
        &&  SG(request_info).request_method
        && !strcmp(SG(request_info).request_method, "POST")) {
            /* HTTP POST may contain form data to be processed into variables
             * depending on given content type */
            sapi_read_post_data();
        } else {
            SG(request_info).content_type_dup = NULL;
        }

        /* Cookies */
        SG(request_info).cookie_data = sapi_module.read_cookies();
    }
    if (sapi_module.activate) {
        sapi_module.activate();
    }
    if (sapi_module.input_filter_init) {
        sapi_module.input_filter_init();
    }
}

PHPAPI int php_hash_environment(void)
{
    memset(PG(http_globals), 0, sizeof(PG(http_globals)));
    zend_activate_auto_globals();
    if (PG(register_argc_argv)) {
        php_build_argv(SG(request_info).query_string, &PG(http_globals)[TRACK_VARS_SERVER]);
    }
    return SUCCESS;
}

ZEND_API void zend_activate_modules(void) /* {{{ */
{
    zend_module_entry **p = module_request_startup_handlers;

    while (*p) {
        zend_module_entry *module = *p;

        if (module->request_startup_func(module->type, module->module_number)==FAILURE) {
            zend_error(E_WARNING, "request_startup() for %s module failed", module->name);
            exit(1);
        }
        p++;
    }
}