PHP Nested Array - Output sub-array contents and array name - php

Question

Consider this nested array:
$link = array(
'Level 1' => array(
'Monthly' => array(
'note' => 'Note 1 1',
'link' => '1.1.com',
),
'6 Month' => array(
'note' => 'Note 1 6',
'link' => '1.6.com',
),
),
'Level 2' => array(
'Monthly' => array(
'note' => 'Note 2.1',
'link' => '2.1.com',
),
'6 Month' => array(
'note' => 'Note 2.6',
'link' => '2.6.com',
),
),
How would I gracefully use a foreach to achieve the following:
if $var = 'Level 1' output
Monthly
6 Month
I'm suspecting I might need to do a loop inside a loop? I can iterate through the array, but am having trouble figuring out how to call the name of the sub-array...

Answer 1

<?php
$key = 'Level 1';
$link = array(
'Level 1' => array(
'Monthly' => array(
'note' => 'Note 1 1',
'link' => '1.1.com',
),
'6 Month' => array(
'note' => 'Note 1 6',
'link' => '1.6.com',
),
),
'Level 2' => array(
'Monthly' => array(
'note' => 'Note 2.1',
'link' => '2.1.com',
),
'6 Month' => array(
'note' => 'Note 2.6',
'link' => '2.6.com',
),
),
);
if(isset($link[$key])) {
foreach($link[$key] as $array) {
print_r($array);
}
}
?>
RETURNS
Array
(
[note] => Note 1 1
[link] => 1.1.com
)
Array
(
[note] => Note 1 6
[link] => 1.6.com
)
I check to see if it is set first and then run a foreach on the set key to print out what you need.
EDIT:
if(isset($link[$key])) {
foreach($link[$key] as $key => $array) {
print $key;
print_r($array);
}
}
Which returns
Monthly
Array
(
[note] => Note 1 1
[link] => 1.1.com
)
6 Month
Array
(
[note] => Note 1 6
[link] => 1.6.com
)

Answer 2

I think using nested loop in this case is graceful.
Just use two foreach.

Answer 3

that's how it'd look like if you're trying to define the arrays within the main array
foreach ($link as $sub_array) {
//do something
foreach ($sub_array as $sub_of_sub) {
// do something and so on
}
}