Inércia Sensorial

I am working on a codebase developed by an ex-employee, correcting code like:
PLAIN TEXT
PHP:

$x = $y = 0;

while ($x <$interval + 1) {

    $looped_date = date('Y-m-d', mktime(0, 0, 0, date('m'), date('d') + $y, date('Y'));

    $formatted_looped_date = implode('/', array_reverse(explode('-', $looped_date)));

    $looped_date = implode('', array_reverse(explode('/', $formatted_looped_date)));

    $month = "$looped_date[4]$looped_date[5]";

    /* bunch of [...]