Question

How can I search for a key in an array that contains more arrays.
For example I would like to search for “key” in “arr” and return this:

arr["some_inner_array"]["another_array_possible"][key"]

array_key_exists can tell me if it exists, but of course what I really need in the value…

I hope my question is clear…

EDIT:
based on the answer below, I managed to do a recursive function for that:

function look_in_array ( $array, $key ) {  
            if  ( isset($array[$key]) )
                return $array[$key];
    foreach ($array as $item) {
        if (is_array($item)) {
            $value = look_in_array ($item,$key);
            if ($value)
                return $value;
        }              
    }
}

Answer 1

This function should work:

function array_key_exists_recursive($searchKey, $array)
{
    $result = false;

    foreach($array as $key => $value)
    {
        if(is_array($array[$key]))
        {
            $result = array_key_exists_recursive($searchKey, $array[$key]);
        }
        else if(array_key_exists($searchKey, $array))
        {
            $result = $array[$searchKey];
        }

        if($result)
            break;
    }
    return $result;
}

Exmaple:

$array = array( "a" => array("b" => "1", "c" => "2") );


var_dump(array_key_exists_recursive("c", $array)); //Result: 2