<?php
function unset_last_array_element($array){
    $array = array_reverse($array);
    unset($array[0]);
    $array = array_reverse($array);
    return $array;
}

function loop($array, $key_array = array(), $count = false){

    foreach($array as $key => $value){

        if(is_object($value)) $value = (array)$value;

        if(is_array($key_array)) if(end($key_array) != $key) $key_array[] = $key;

        reset($key_array);

        if(is_array($value)){

            loop($value, $key_array);

        }else{

            if(trim($value) != ""){

                if(is_array($key_array)) foreach($key_array as $key_name) print $key_name." - ";

                print ": ".trim($value)."<br>";

            }

            $key_array = unset_last_array_element($key_array);

        }

    }

    return true;

}

$array = array(
    'key1' => 'Value1',
    'key2' => 'Value2',
    'key3_multi' => array('key1' => 'Value1', 'key2' => 'Value2'),
    'key4_multi' => array('key1' => 'Value1', 'key2' => 'Value2', 'key3_multi' => array('key1' => 'Value1', 'key2' => 'Value2'))
    );

loop($array);

?>


Outputs:

key1 - : Value1
key2 - : Value2
key3_multi - key1 - : Value1
key3_multi - key2 - : Value2
key3_multi - key4_multi - key1 - : Value1
key3_multi - key4_multi - key2 - : Value2
key3_multi - key4_multi - key3_multi - key1 - : Value1
key3_multi - key4_multi - key3_multi - key2 - : Value2

Want:

key1 - : Value1
key2 - : Value2
key3_multi - key1 - : Value1
key3_multi - key2 - : Value2
key4_multi - key1 - : Value1
key4_multi - key2 - : Value2
key4_multi - key3_multi - key1 - : Value1
key4_multi - key3_multi - key2 - : Value2