zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh TSRMLS_CC);
rv = zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "Osl|s", &zconn, php_pqconn_class_entry, &expr_str, &expr_len, &direction, &opt_str, &opt_len);
zend_replace_error_handling(EH_THROW, exce(EX_INVALID_ARGUMENT), &zeh TSRMLS_CC);
rv = zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "Osl|s", &zconn, php_pqconn_class_entry, &expr_str, &expr_len, &direction, &opt_str, &opt_len);