qr code read example - https://ianburgwin.net/psmdqrcode/

get_password.php

<?php
// extract password from PSMD rescue QR code
// uses https://github.com/khanamiryan/php-qrcode-detector-decoder
?>

<h2>Pok&eacute;mon Super Mystery Dungeon QR code parser</h2>
Check out the QR codes you can use <a href="https://ianburgwin.net/psmdqrcode/codes"><b>here</b></a> and then do ?file=filename!<br>
Example: <a href="https://ianburgwin.net/psmdqrcode/?file=1FTq4zo.jpg">https://ianburgwin.net/psmdqrcode/?file=1FTq4zo.jpg</a><br>
If you would like your image to be tested, contact ihaveamac/ihaveahax (which is probably where you found the link!)<hr>
Source and credits for this PHP script is a <a href="https://gist.github.com/ihaveamac/3dae2929f8b87ed93dcf">GitHub Gist</a><hr>
<?php
$result = "";
if (!isset($_REQUEST['file'])) {
	die;
}
if (!file_exists("codes/".$_REQUEST['file'])) {
	echo "that file does not exist, look above";
	die;
}

include_once('./lib/QrReader.php');
$qrcode = new QrReader('./codes/'.$_REQUEST['file']);
$text = $qrcode->text(); //return decoded text from QR Code
file_put_contents($_REQUEST['file'].".txt", $text);
$text_hex = bin2hex($text);
$text_hex_switch = str_replace("ce25", "2400", $text_hex);
$text_switch = hex2bin($text_hex_switch);
$password = substr($text_switch, -160);

// due to being separated by 00, use double the normal amoubt
// i.e. each line is visually 20 characters, but technically 40
$password_lines  = substr($password, 0, 14)." ".substr($password, 14, 12)." ".substr($password, 26, 14)."<br>";
$password_lines .= substr($password, 40, 14)." ".substr($password, 54, 12)." ".substr($password, 66, 14)."<br>";
$password_lines .= substr($password, 80, 14)." ".substr($password, 94, 12)." ".substr($password, 106, 14)."<br>";
$password_lines .= substr($password, 120, 14)." ".substr($password, 134, 12)." ".substr($password, 146, 14);

$result .= "<b>The password for the below image should be: (all bullseyes changed to $)</b><br>";
$result .= "<pre>".$password_lines."</pre>";
if (file_exists("fullcodes/".$_REQUEST['file'])) {
	$result .= "Compare it with <a href=\"https://ianburgwin.net/psmdqrcode/fullcodes/".$_REQUEST['file']."\">the full image containing the password</a>.";
} else {
	$result .= "There's no full image with the password for this one. But if the other ones are to go by, it's probably correct.";
}
$result .= "<br><img src='codes/".$_REQUEST['file']."'>";

$result .= "<hr><h3>The process</h3>";
$result .= "Source:<pre>".$text."</pre>";
$result .= "<hr>Source bin to hex:<pre>".$text_hex."</pre>";
$result .= "<hr>Switch bullseye to $ (ce25 -> 2400):<pre>".$text_hex_switch."</pre>";
$result .= "<hr>Switched hex to bin:<pre>".$text_switch."</pre>";
$result .= "<hr>Get last 160 characters (due to 00 between each)</b>:<pre>".$password."</pre>";

echo $result;