递归遍历PHP多维数组

<?php
/*
*  -------------------------------------------------
*   Author : nowamagic
*   Url    : www.nowamagic.net
*   Date   : 2011-03-09
*  -------------------------------------------------
*/
function arr_foreach ($arr)
{
if (!is_array ($arr))
{
return false;
}

foreach ($arr as $key => $val )
{
if (is_array ($val))
{
arr_foreach ($val);
}
else
{
echo $val.'<br/>';
}
}
}
$arr1 = array (1=>array(11,12,13,14=>array(141,142)),2,3,4,5);
echo '<pre>';
print_r($arr1);
echo '<pre>';
arr_foreach ($arr1);
?>