struct php_pq_callback *recursion;
} php_pq_callback_t;
+#define PHP_PQ_CALLBACK_INIT {{0},{0},NULL}
+
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);