我对这个阵列和foreach做错了什么？

Question

I have two arrays, where I can get from using $result[0] or $result[1].

I've done a print_r($results[0]) and a print_r($result[1]) . they both give me the two different arrays which I want.

However, I'm not able to get any of my information if I do this

foreach($results[0] as $result){
    echo $result['data']['id'];
}

I want to be able to differentiate the two arrays, so I want to be able to get information from the two.

I have done a json_decode on $results as well.

If someone can help me out here, that'll be great! thanks

EDIT:

Array
(
    [nonsense] => Array
        (
            [more] => information
            [less] => less stuff
        )


    [data] => Array
        (
            [0] => Array
                (
                    [id] => some id
                )
            [1] => Array
                (
                    [eh] => some eh
                )
        )
)

Array
(
    [more stuff] => Array
        (
            [more] => information
            [less] => less stuff
        )


    [more data] => Array
        (
            [0] => Array
                (
                    [freshstuff] => some id
                )
        )

)

Answer 1

In your example $result['data']['id'] doesn't exist. id is inside yet another array.

foreach is not useful in this situation because the data isn't uniform. When you loop through $results[0] you get the nonsense key on the first iteration and the data key on the second iteration. Furthermore, the nonsense key is an array of key/value pairs, while the data key is an array of arrays of key/value pairs.

$results[0] and $results[1] seem uniform, but they contain different keys.

echo $results[0]['data'][0]['id'], "<br>\n";
echo $results[0]['data'][1]['eh'], "<br>\n";

echo $results[1]['more data'][0]['freshstuff'], "<br>\n";

Update

foreach() doesn't work with this kind of array. array_walk_recurisive() is generally a good choice in this situation.

<pre>
<?php

$results = array(
  array(
    'nonsense' => array(
      'more' => 'information',
      'less' => 'less stuff'
    ),


    'data' => array(
      array('id' => 'some id'),
      array('eh' => 'some eh')
    )
  ),

  array(
    'more stuff' => array(
      'more' => 'information',
      'less' => 'less stuff'
    ),


    'more data' => array(
      array('freshstuff' => 'some id'))

  )
);


function test_print($item, $key)
{
    echo "$key: $item\n";
}

array_walk_recursive($results, 'test_print');

?>
</pre>

displays

more: information
less: less stuff
id: some id
eh: some eh
more: information
less: less stuff
freshstuff: some id

Depending on your needs, you may also find some of the other array functions useful.