PHP code - 8 lines

Link:

PHP, pasted on Sep 15:

<php
$input = 423219;
$rev = 0;

while ($input > 0) {
    $rev = ($rev * 10 + ($input % 10) );
    $input = $input / 10;
}

Output:

<php
$input = 423219;
$rev = 0;

while ($input > 0) {
    $rev = ($rev * 10 + ($input % 10) );
    $input = $input / 10;
}