Return value from multi dimensional array with keys from another array

Question

Basically this is what I have

$foo = array(
    'bar' = array(
        'baz' = array(
            5
        )
    ),
);

And I have another array that holds the keys

$keys = array('bar','baz',0);

Is there a way I can get the value of the first array with the keys in the second array? I can probably try to write some recursive function that will end up getting the job done, but I was wondering if there was a neat way of doing this by using array functions ( not very good at those ) or something.. ?

Note: keys may not always be 3.

You'd need some sort of array_reduce that takes two array parameters and walks through both of them, a task too specialized to make it a built-in function. — Sergiu Paraschiv
– Sergiu Paraschiv, Commented Aug 20, 2014 at 13:11

Justin Iurman · Accepted Answer · 2014-08-20 13:06:58Z

3

You can try something like this, it should work

$arr = $foo;
foreach($keys as $key)
{
   $arr = $arr[$key];
}

echo $arr; // 5

answered Aug 20, 2014 at 13:06

Justin Iurman

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4 Comments

php_nub_qq Over a year ago

And to think that I had started writing recursive functions before I asked the question, Jesus! Thank you. Every time I convince myself that the more complicated I think a problem is, the less it actually is.

Martijn Over a year ago

There I was, writing something complex.

Justin Iurman Over a year ago

Yes in that case no need to use complicated things like pure recursion

php_nub_qq Over a year ago

@Martijn I know that feeling.. :D

user3806549 · Accepted Answer · 2014-08-20 13:08:07Z

0

This could be what you are looking for. (not 100% sure if this would help)

you can see all the array functions on: http://php.net/manual/en/ref.array.php some neat ones that might do the trick:

   /function.array-fill-keys.php
   /function.array-fill.php
  /function.array-keys.php

answered Aug 20, 2014 at 13:08

user3806549

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