dbcolsource      1233 ext/mssql/php_mssql.c 			source = (char *)dbcolsource(mssql_ptr->link,i+1);
dbcolsource       329 ext/pdo_dblib/dblib_stmt.c 	add_assoc_string(return_value, "column_source", dbcolsource(H->link, colno+1), 1);