Array push multiple keys with array or string - php

Question

I have the following array:
$array = array('23' => array('19' => array('7' => array('id' => 7, 'name' => 'John Doe'))));
Array
(
[23] => Array
(
[19] => Array
(
[7] => Array
(
[id] => 7
[name] => John Doe
)
)
)
)
I want to access sub-element and i know his sub keys that 23 19 7. I can do this with simple format
echo $array['23']['19']['7']['name']; // John Doe
But these array have just 3 level and this may vary, more or less. I have to make an array unlimited level.
I tried that like i want with following codes:
$keys = array('23', '19', '7');
echo $array[$keys]['name'];
And of course i got Warning: Illegal offset type in error.
Then i tried this one but i couldnt get any element:
function brackets($str) {
return sprintf("['%s']", $str);
}
$keys = array('23', '19', '7');
$string_key = implode('', array_map('brackets', $keys)); // ['23']['19']['7']
echo $array{$string_key}['name'];

Answer 1

You can make a function that you can call with a key-array.
function getArrayPathVal($arr, $path){
if(!is_array($path))
return $arr[$path];
$curr = $arr;
foreach($path as $key)
{
if(!$curr[$key])
return false;
$curr = $curr[$key];
}
return $curr;
}
$array = array('23' => array('19' => array('7' => array('id' => 7, 'name' => 'John Doe'))));
$keys = array('23', '19', '7');
$res = getArrayPathVal($array, $keys);
print $res['name']; //Prints 'John Doe'

Answer 2

You could try a recursive function:
function getByKeys ($arr, $keys) {
if (count($keys) == 0)
return $arr;
$key = array_shift ($keys);
return getByKeys ($arr[$key], $keys);
}
$array = array('23' => array('19' => array('7' => array('id' => 7, 'name' => 'John Doe'))));
echo getByKeys ($array, array('23', '19', '7'));
this is untested, but the concept should do the trick:
retrieve the next key to be applied to the array
next iteration using the sub-array denoted by that key
stop if no more keys should be applied.