+void php_pqdt_to_string(zval *zdt, const char *format, char **str_buf, size_t *str_len TSRMLS_DC);
+
+zend_class_entry *php_pqconv_class_entry;
+
+HashTable *php_pq_parse_array(php_pqres_t *res, const char *val_str, size_t val_len, Oid typ TSRMLS_DC);