<?php
 
// Dependency: OpenSSL library (or a suitable third-party library)
 
$ciphertext = hex2bin("CACDEC6C5455EE52BB1DA40470963113"); // Replace with your hex-encoded ciphertext
$key = hex2bin(str_repeat("\x00", 16)); // Null key (16 bytes of "\x00")
$iv = hex2bin(str_repeat("\x00", 16)); // Initialization vector (16 bytes of "\x00")
 
// Use OpenSSL functions (assuming OpenSSL is available)
$decrypted = openssl_decrypt($ciphertext, 'aes-128-cbc', $key, OPENSSL_RAW_DATA, $iv);
 
// Extract counter (assuming the counter is at the same position as the Python code)
$counter = unpack("C3", substr($decrypted, 8, 3))[1]; // Extract 3 bytes from index 8 and unpack as unsigned chars
 
echo $counter;
 
?>

PD9waHAKCi8vIERlcGVuZGVuY3k6IE9wZW5TU0wgbGlicmFyeSAob3IgYSBzdWl0YWJsZSB0aGlyZC1wYXJ0eSBsaWJyYXJ5KQoKJGNpcGhlcnRleHQgPSBoZXgyYmluKCJDQUNERUM2QzU0NTVFRTUyQkIxREE0MDQ3MDk2MzExMyIpOyAvLyBSZXBsYWNlIHdpdGggeW91ciBoZXgtZW5jb2RlZCBjaXBoZXJ0ZXh0CiRrZXkgPSBoZXgyYmluKHN0cl9yZXBlYXQoIlx4MDAiLCAxNikpOyAvLyBOdWxsIGtleSAoMTYgYnl0ZXMgb2YgIlx4MDAiKQokaXYgPSBoZXgyYmluKHN0cl9yZXBlYXQoIlx4MDAiLCAxNikpOyAvLyBJbml0aWFsaXphdGlvbiB2ZWN0b3IgKDE2IGJ5dGVzIG9mICJceDAwIikKCi8vIFVzZSBPcGVuU1NMIGZ1bmN0aW9ucyAoYXNzdW1pbmcgT3BlblNTTCBpcyBhdmFpbGFibGUpCiRkZWNyeXB0ZWQgPSBvcGVuc3NsX2RlY3J5cHQoJGNpcGhlcnRleHQsICdhZXMtMTI4LWNiYycsICRrZXksIE9QRU5TU0xfUkFXX0RBVEEsICRpdik7CgovLyBFeHRyYWN0IGNvdW50ZXIgKGFzc3VtaW5nIHRoZSBjb3VudGVyIGlzIGF0IHRoZSBzYW1lIHBvc2l0aW9uIGFzIHRoZSBQeXRob24gY29kZSkKJGNvdW50ZXIgPSB1bnBhY2soIkMzIiwgc3Vic3RyKCRkZWNyeXB0ZWQsIDgsIDMpKVsxXTsgLy8gRXh0cmFjdCAzIGJ5dGVzIGZyb20gaW5kZXggOCBhbmQgdW5wYWNrIGFzIHVuc2lnbmVkIGNoYXJzCgplY2hvICRjb3VudGVyOwoKPz4=