mysqlnd_num_fields 71 ext/mysqlnd/mysqlnd_libmysql_compat.h #define mysql_num_fields(r) mysqlnd_num_fields((r)) mysqlnd_num_fields 1484 ext/mysqlnd/mysqlnd_result.c mysqlnd_array_init(return_value, mysqlnd_num_fields(result) * 2);