PHP - Explicit key in multimensional associative array

Question

First of all, sorry for the title, but I didn't know what to put exactly to describe the issue.

Back to the problem, this is what I want to get:

{"0":{"dep":"DIR","user":"10000008","seen":"0000-00-00 00:00:00"},"1":{"dep":"TES","user":"10000008","seen":"0000-00-00 00:00:00"}}

and this is the actual code I am using (that receives data from an input element as array) example:

<input type="text" name="dep[]" />
<input type="text" name="user[]" />

This is the main code I need to "fix":

$user = ($_POST['cc_user']);
$dep =  ($_POST['cc_dep']);

$cc = array();
for($i=0;$i<count($_POST['cc_dep']);$i++) {
    $cc = array();
    $cc['user'] = $user[$i];
    $cc['dep'] = $dep[$i];
    $cc['seen'] = '0000-00-00 00:00:00';
    $x = strval($i);
    $cc2["$x"] = $cc;

    unset($cc);
}

echo json_encode($cc2);

At the moment, this is the result instead of the one I want to get:

[{"user":"10000008","dep":"DIR","seen":"0000-00-00 00:00:00"},{"user":"10000001","dep":"admin","seen":"0000-00-00 00:00:00"}]

As you can see, the key of the array is not visible, and I need that for an integration on my website. I tried to specify the $i using:

(string)$i
stringval($i)
"$i"

but I didn't manage to solve the problem. Can someone help, even if it is something really easy?

Thanks in advance!

@WillardSolutions, you caught correctly and that's what I asked him that even he has not declared $cc2 variable and only used in loop. So without declaring variable will not give an effect :) — Smile
– Smile, Commented Nov 26, 2018 at 17:23
@NullPointer Please explain then, how was the OP able to get any result after calling echo json_encode($cc2);? — Dharman
– Dharman ♦, Commented Nov 26, 2018 at 17:27

Dharman · Accepted Answer · 2018-11-26 17:43:23Z

1

What you are probably looking for is forcing the JSON to be an object. Non-associative arrays (with all numerical keys) are displayed in JSON format without the key. In PHP numerical-ish strings will be converted to integers when used as array keys.
You can use additional parameter to make it a JSON object.

json_encode($cc2, JSON_FORCE_OBJECT)

Please take a look at the examples in the docs for json_encode

edited Nov 26, 2018 at 17:43

answered Nov 26, 2018 at 17:20

Dharman♦

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