PHP: Find, store, address array key by index

Question

I have a very complex multi-dimensional array ($tree). I receive that large array as a reference.

Now, I need to find a certain key in it and insert data there.

Finding the needed key is easy. A function searches the array and returns the path $path. For instance, it returns the $path = array('index1', 'index2', 'index3'). Which means, that I would need to assign my data like $tree['index1']['index2']['index3'] = $some_data_i_needed_to_insert.

Now the problem appears is that I can't address that array index from the address I receive from the seatch function.

I tried like this:

<?php
$path = '[\'index1\'][\'index2\'][\'index3\']';
$tree{$path} = $some_data_i_needed_to_insert;
?>

Is there a way to address an array index in my case?

Could we see the first function? That might help clarify what the question is. — jameslafferty
– jameslafferty, Commented Nov 15, 2013 at 15:37

deceze · Accepted Answer · 2013-11-15 15:41:40Z

2

There's no sane direct expression you can use to directly access a key if you have a path array. However, this'll do:

$path =  array('1334', '#below', '3242');
$node =& $complexArray;

foreach ($path as $key) {
    $node =& $node[$key];
}

$node = $data;

answered Nov 15, 2013 at 15:41

deceze♦

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