MySql INNER JOIN导致“怪异”数组

Question

I'm not that good in advanced MySql and tried to join multiple tables and drop the results into a single PHP-Array.

SELECT * FROM AAA
        INNER JOIN BBB ON AAA.Aufg_id = BBB.Aufg_id
        INNER JOIN CCC ON AAA.SchuelerNr = CCC.schuelernr AND AAA.Schulnummer = CCC.schulnummer AND AAA.Klasse = CCC.klasse
        WHERE AAA.Schulnummer='$x' AND AAA.Klasse='$y' AND AAA.SchuelerNr='$z'

The result is dropped into a

mysqli_fetch_all($mysqli_result, MYSQLI_BOTH);

therefore I'm able to get the values associative or by number for iterating through a loop. Almost everything worked fine, except of two values that were not supposed to be there:

[0] => DEMO11
        [sn] => DEMO11
        [1] => 2014-03-31 10:05:14
        [zt] => 2014-03-31 11:47:45
        [2] => 8a_D1
        [kl] => 8a_D1
        [3] => 4
        [snr] => 4
        [4] => 1
        [Aufg_id] => 1
        [5] => f
        [erg] => f
        [6] => 1   <<<< WHERE DOES THIS COME FROM?
        [7] => 1
        [th] => 1
        [8] => Deu
        [fac] => Deu

The value is increasing by one every row. Its right there between the tables AAA and BBB, without any associative key.

At the very end of every row, there is a even more irritating value representing a datetime from one of the other columns:

[43] => 8
[NA_Eng] => 8
[44] => 4
[NA_Fra] => 4
[45] => 2014-03-31 11:47:45 <<<<<< ???

QUESTION: Where do those values come from? How can I get rid of them??

Answer 1

Change your code to:

mysqli_fetch_all($mysqli_result, MYSQLI_ASSOC);

This way, you'll not get the numeric keys in your results.

See MySQLi predefined constants .