xor-char.php

<?php

$str = 'r_\T_W
[QBQSC_^ID
yBZ
UWI
U]QY\D
]UBD
QJ
U\C_
]UW_\T_
QZQ^T?[_D
YC
[Q@';

foreach (preg_split('#[\r\n]+#', $str) as $line) {
    $chars = str_split($line);
    foreach ($chars as $char) {
       echo $char ^ '0';
    }
    echo ' ';
}