PHP 5.3+ (safe)
range <= 128 bytes
482424112994923113297121090242411210353292651229460112228399109149751282614311166121153929147198351001411661211559915116999341919231910671297471013731035012512152995121145118302468310841232211292074121155012771143923278512115501816119651154811292412150661212263019861153871918242691210635477119627297174572129747102223127312255412195242990704515918206269100332226149786699441136214126754710137310350125121529951211451183024683108412322112920741212263019861153871918242691210944191722683984510232122312004200000000000000000000000000000011224241129752128729183000000000000000000000000000000427344126627112312961782933097521287291121806311106811548172725429797110845159182062691014391471169293309747101373103501251215299512122630198611538719182426912115392115726311323861094413211027131990121094419172268398451023212239412100414296118911539278825
843 digits.
The code with some whitespace added:
ob_start();
phpcredits();
$d='';
$c=0;
foreach (str_split(ob_get_clean()) as $x) {
$d .= ord($x^$c);
$c=$x;
}
echo substr($d,0,843);