extern void php_pq_callback_dtor(php_pq_callback_t *cb);
extern void php_pq_callback_addref(php_pq_callback_t *cb);
extern zval *php_pq_callback_to_zval(php_pq_callback_t *cb, zval *tmp);
extern void php_pq_callback_dtor(php_pq_callback_t *cb);
extern void php_pq_callback_addref(php_pq_callback_t *cb);
extern zval *php_pq_callback_to_zval(php_pq_callback_t *cb, zval *tmp);