function reverse ($data)

function reverse ($data)

{

if(is_string($data))

{

$result = '';

for($i=strlen($data)-1; $i>=0; $i--)

{

$result .=$data{$i};

}

return $result;

}

elseif(is_array($data))

{

$keys = array_keys($data);

$val = array_values($data);

for($i=count($data)-1; $i>=0; $i--)

{

$result[$keys[$i]] = $val[$i]; 

}

return $result;

}

else

{

return false;

}

}

$str = "abcd";

echo reverse($str);

$arr = array (1,2,3,4,5,6);

echo "<pre>";

print_r(reverse($arr));

echo "</pre>";

$arr1 = array ('a' => 1, 'b' => 2, 'c' => 3);

echo "<pre>";

print_r(reverse($arr1));

echo "</pre>";

reverse(10);