FIELD_TYPE_NULL 2375 ext/mysql/php_mysql.c case FIELD_TYPE_NULL: FIELD_TYPE_NULL 781 ext/mysqli/mysqli.c REGISTER_LONG_CONSTANT("MYSQLI_TYPE_NULL", FIELD_TYPE_NULL, CONST_CS | CONST_PERSISTENT); FIELD_TYPE_NULL 2254 ext/mysqlnd/mysqlnd.c case FIELD_TYPE_NULL: