PHP nested array yielding undefined index error - what am I doing wrong?

Question

I'm sending a POST array to a controller. The array looks like such:

Array
(
[event] => Array
    (
        [0] => Array
            (
                ['publishStart'] => 2013-12-10
                ['eventStart'] => 2014-05-05
                ['eventEnd'] => 2014-05-10
                ['timeStart'] => 
                ['timeEnd'] => 
                ['location_id'] => 1
                ['id'] => 65774
            )

There are a few of these blocks, i.e. [event][1]. [event][2], etc. I'm attempting to run a foreach loop on $_POST['event'] and can confirm that on each iteration, $event contains the following:

Array
(
    ['publishStart'] => 2013-12-10
    ['eventStart'] => 2014-05-05
    ['eventEnd'] => 2014-05-10
    ['timeStart'] => 
    ['timeEnd'] => 
    ['location_id'] => 1
    ['id'] => 65774
)

Now, the problem. You can see in both above arrays there is a key called "id" with a corresponding value. Yet the following code returns a string of "undefined index" errors:

foreach ($_POST['event'] as $event)
{   
    echo $event['id'];
    exit();
}

What on earth am I doing wrong?

just for debug, do a var_dump on $event instead of the echo $event['id'] — dboals
– dboals, Commented Apr 29, 2014 at 23:08
Sorry if I did not make it clear enough, but both arrays above are nicely-formatted versions of both of your requests, direct output from var_dump. The full var_dump for $event is at pastebin.com/x1YrjdGc nd the full var_dump for $_POST is at pastebin.com/fa9zkTWa thanks! — Ivan
– Ivan, Commented Apr 29, 2014 at 23:15
There's probably atleast 1 event-block in your $_POST-array without an id-field. — Kep
– Kep, Commented Apr 29, 2014 at 23:15
Crazy thing though is that when I try to display a counter to show me how many times it's gone through the loop, it always stops after the first iteration. Does that matter? — Ivan
– Ivan, Commented Apr 29, 2014 at 23:16
Do you var_dump / print_r exactly in front of the loop? — Kep
– Kep, Commented Apr 29, 2014 at 23:17

Kep · Accepted Answer · 2014-04-29 23:41:33Z

2

Your array indices seem to include the single-quotes.

Try

echo $event["'id'"];

answered Apr 29, 2014 at 23:41

Kep

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1 Comment

Ivan Over a year ago

Ugh, thank you so much! Elsewhere in the code before the variables got passed to POST the single-quotes were being escaped for some reason. I really appreciate it!

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