Understanding a PHP Generated JSON Array -


i'm trying make sense of json output , hoping here might kind enough walk me through it's been while since used json.

i have following php

$query01 = "select `department`,`departmentheadid` `department`"; $result01 = mysql_query($query01) or die("error 01: " . mysql_error());  while($r = mysql_fetch_array($result01)) {  // create json data: $rows[] = $r; } //  echo json_encode($rows);   $data = json_encode($rows); echo '<pre>'; print_r(json_decode($data)); echo '</pre>';

which generates following:

array ( [0] => stdclass object     (         [0] => despatch         [department] => despatch         [1] => 1         [departmentheadid] => 1     )  [1] => stdclass object     (         [0] => factory         [department] => factory         [1] => 2         [departmentheadid] => 2     )  [2] => stdclass object     (         [0] => finishing         [department] => finishing         [1] => 3         [departmentheadid] => 3     )  [3] => stdclass object     (         [0] => accounts         [department] => accounts         [1] => 8         [departmentheadid] => 8     )  [4] => stdclass object     (         [0] => reps         [department] => reps         [1] => 13         [departmentheadid] => 13     )

all expecting column department & departmentheadid

would appreciate understanding output little more.

any thoughts...?

you missed part in documentation of array mysql_fetch_array ( resource $result [, int $result_type = mysql_both ] )

result_type
    the type of array fetched. it's constant , can take following values: mysql_assoc, mysql_num, , mysql_both.

type of returned array depends on how result_type defined. using mysql_both (default), you'll array both associative , number indices.

source : http://php.net/manual/en/function.mysql-fetch-array.php

since mysql_both default value $result_type when not pass second parameter mysql_fetch_array, end both number , associative indices in array.
if want department & departmentheadid, should go 

$r = mysql_fetch_array($result01, mysql_assoc)

using mysql_assoc, associative indices (as mysql_fetch_assoc() works)

bottom line : recommend prepare deprecation of mysql_* functions can see stated in official documentation linked here above , information pdo
starting point may question : why shouldn't use mysql_* functions in php?


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