zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh TSRMLS_CC);
rv = zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "O|blbb", &zconn, php_pqconn_class_entry, &async, &isolation, &readonly, &deferrable);
zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh TSRMLS_CC);
rv = zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "O|blbb", &zconn, php_pqconn_class_entry, &async, &isolation, &readonly, &deferrable);