--TEST--
mysqli_fetch_fields()
--SKIPIF--
<?php
require_once('skipif.inc');
require_once('skipifemb.inc');
require_once('skipifconnectfailure.inc');
?>
--FILE--
<?php
    require_once("connect.inc");

    $tmp    = NULL;
    $link   = NULL;

    // Note: no SQL type tests, internally the same function gets used as for mysqli_fetch_array() which does a lot of SQL type test
    if (!is_null($tmp = @mysqli_fetch_fields()))
        printf("[001] Expecting NULL, got %s/%s\n", gettype($tmp), $tmp);

    if (!is_null($tmp = @mysqli_fetch_fields($link)))
        printf("[002] Expecting NULL, got %s/%s\n", gettype($tmp), $tmp);

    require('table.inc');

    // Make sure that client, connection and result charsets are all the
    // same. Not sure whether this is strictly necessary.
    if (!mysqli_set_charset($link, 'utf8'))
        printf("[%d] %s\n", mysqli_errno($link), mysqli_errno($link));

    $charsetInfo = mysqli_get_charset($link);

    if (!$res = mysqli_query($link, "SELECT id AS ID, label FROM test AS TEST ORDER BY id LIMIT 1")) {
        printf("[003] [%d] %s\n", mysqli_errno($link), mysqli_error($link));
    }

    $fields = mysqli_fetch_fields($res);
    foreach ($fields as $k => $field) {
        var_dump($field);
        switch ($k) {
            case 1:
                /* label column, result set charset */
                if ($field->charsetnr != $charsetInfo->number) {
                    printf("[004] Expecting charset %s/%d got %d\n",
                        $charsetInfo->charset,
                        $charsetInfo->number, $field->charsetnr);
                }
                if ($field->length != $charsetInfo->max_length) {
                    printf("[005] Expecting length %d got %d\n",
                        $charsetInfo->max_length,
                        $field->max_length);
                }
                break;
        }
    }

    mysqli_free_result($res);

    if (false !== ($tmp = mysqli_fetch_fields($res)))
        printf("[006] Expecting false, got %s/%s\n", gettype($tmp), $tmp);

    mysqli_close($link);
    print "done!";
?>
--CLEAN--
<?php
    require_once("clean_table.inc");
?>
--EXPECTF--
object(stdClass)#%d (13) {
  ["name"]=>
  string(2) "ID"
  ["orgname"]=>
  string(2) "id"
  ["table"]=>
  string(4) "TEST"
  ["orgtable"]=>
  string(%d) "%s"
  ["def"]=>
  string(0) ""
  ["db"]=>
  string(%d) "%s"
  ["catalog"]=>
  string(%d) "%s"
  ["max_length"]=>
  int(1)
  ["length"]=>
  int(11)
  ["charsetnr"]=>
  int(63)
  ["flags"]=>
  int(49155)
  ["type"]=>
  int(3)
  ["decimals"]=>
  int(0)
}
object(stdClass)#%d (13) {
  ["name"]=>
  string(5) "label"
  ["orgname"]=>
  string(5) "label"
  ["table"]=>
  string(4) "TEST"
  ["orgtable"]=>
  string(%d) "%s"
  ["def"]=>
  string(0) ""
  ["db"]=>
  string(%d) "%s"
  ["catalog"]=>
  string(%d) "%s"
  ["max_length"]=>
  int(1)
  ["length"]=>
  int(%d)
  ["charsetnr"]=>
  int(%d)
  ["flags"]=>
  int(0)
  ["type"]=>
  int(254)
  ["decimals"]=>
  int(0)
}

Warning: mysqli_fetch_fields(): Couldn't fetch mysqli_result in %s on line %d
done!