Search a key array and return value

Question

I am manipulating a large XML file that when read returns several array, one inside the other, is it possible to search the key of an array and return its value? or an array if there is more than one key?

something like:

    array(
    'bio'=> array(
        'info'=> array(
               'cash'=>'50'
);
    );

And something research, for example, for "cash" it traverses all array and returns "50"

Answer 1

You can take the keys of arrays with array_keys($array);

With this you can take the return and find the key you want. Then take the amount.

$array = array("azul", "vermelho", "verde");
$key = array_keys($array, "vermelho"));
echo $array[$key];

Follow another example with recursion.

<?php
$array = array("color" => array("azul", "vermelho", "verde"),
               "size"  => array("joão", "maria", "pedro"));

function verificar(array $array)
{
    $keys = array();

    foreach ($array as $key => $value) {
        $keys[] = $key;

        if (is_array($value)) {
            $keys = array_merge($keys, verificar($value));
        }
    }

    return $keys;
}

$valores = verificar($array);
print_r($valores);
?>

Answer 2

You can use the function array_walk_recursive, example:

$array = array('bio'=>array('info'=>array('cash'=>'50')));
function printFind($item, $key){
    if($key == 'cash'){
        echo $item;
    }
}
array_walk_recursive($array,'printFind');

IDEONE