PHP multidimensional array unknown variable

Question

I am having trouble understanding this problem.

I have defined a multidimensional array but cannot echo values from it.

print_r($_POST) gives this:

Array
(
[title] => zxfvsdf
[purchaseDecision] => on
[optcolumn] => 2
[optrow] => 2
[opt] => Array
    (
        [0] => Array
            (
                [0] => asd
            )

        [1] => Array
            (
                [0] => 123
            )

        [2] => Array
            (
                [0] => vbn
            )

        [3] => Array
            (
                [0] => yui
            )

    )

)

But echo $opt[0][0] returns 'undefined variable: opt'.

I am sure I am missing something quite basic...

Any help is greatly appreciated.

Nauphal · Accepted Answer · 2013-07-05 10:06:43Z

4

try this

echo $_POST['opt'][0][0];

answered Jul 5, 2013 at 10:06

Nauphal

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Comments

Rohan Kumar · Accepted Answer · 2013-07-05 10:07:52Z

2

Try this,

print_r($_POST['opt'][0][0]);

Because opt is in $_POST

answered Jul 5, 2013 at 10:07

Rohan Kumar

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Comments

Headshota · Accepted Answer · 2013-07-05 10:09:10Z

1

it should be: $_POST['opt'][0][0];

if the register_globals is disabled in php (which is a good thing and is by default disabled) variables are not assigned from the request.

answered Jul 5, 2013 at 10:09

Headshota

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1 Comment

kadeshiseraph Over a year ago

What an unbelievably stupid error to have made. Sorry! And thank you

Jaimin Sutariya · Accepted Answer · 2013-07-05 10:10:17Z

1

Define $opt = $_POST['opt']; before using $opt[0][0]

answered Jul 5, 2013 at 10:10

Jaimin Sutariya

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