mysql_fetch_array returns duplicate data

Question

every time i run mysql_fetch_array an array is returned with duplicate values e.g.

Array
(
    [0] => 1
    [row_id] => 1
    [1] =>         


        

Answer 1

The mysql_fetch_array() returns indexed as well as associative array. However mysql_fetch_assoc() returns only associative-array.

When mysql_fetch_array used with MYSQLI_NUM parameter returns only an indexed array. Example: mysql_fetch_array($resultset,MYSQLI_NUM)

Answer 2

mysql_fetch_array() returns an array containing both associative keys (the field names specified by queries) and integer position key (i.e. 0 is first field, 1, is second, etc.). This is for convenience in accessing the data by either method.

if you only want the named keys, you should use mysql_fetch_assoc() or better yet, use the mysqli functions as everyone on here will lambast you for using the old mysql_* functions.

Answer 3

This is the intended functionality of mysql_fetch_array(). If you want to not have the "duplicates" and just have the associative-array, use mysql_fetch_assoc() instead.

Example:

while ($row = mysql_fetch_assoc($data)) { ... }

Answer 4

From the manual:

Returns an array of strings that corresponds to the fetched row, or FALSE if there are no more rows. The type of returned array depends on how result_type is defined. By using MYSQL_BOTH (default), you'll get an array with both associative and number indices. Using MYSQL_ASSOC, you only get associative indices (as mysql_fetch_assoc() works), using MYSQL_NUM, you only get number indices (as mysql_fetch_row() works).

In other words, since MYSQL_BOTH is the default, you get both back. You can specify either MYSQL_ASSOC or MYSQL_NUM instead to get an associative array or numeric array back. You could also use mysql_fetch_assoc() instead which will only return an associative array.

Answer 5

Use mysql_fetch_assoc() for associtive array, or mysql_fetch_row for a numeric array

Answer 6

mysqli_fetch_array($result, MYSQL_ASSOC) this has worked for me as suggested above for mysql_fetch_assoc, in PHP5.5 it's deprecated now.