php_http_client_pool_attach_func_t attach;
php_http_client_pool_detach_func_t detach;
php_http_client_pool_setopt_func_t setopt;
php_http_client_pool_attach_func_t attach;
php_http_client_pool_detach_func_t detach;
php_http_client_pool_setopt_func_t setopt;