Online PHP editor | output for 995aa

@ 2015-10-20T22:04:08Z

<?php

$x = openssl_encrypt('0000000000000000', 'aes-128-ctr', '0123456789abcdef', OPENSSL_RAW_DATA, '0000000000000000');
$y = openssl_encrypt('0000000000000001', 'aes-128-ctr', '0123456789abcdef', OPENSSL_RAW_DATA, '0000000000000000');

$z = '';
for ($i = 0; $i < 16; ++$i) {
    $z .= \chr(
        \ord($x[$i]) ^ \orf($y[$i])
    );
}
var_dump(
    bin2hex($x),
    bin2hex($y),
    bin2hex($z)
);

Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Fatal error: Uncaught Error: Call to undefined function openssl_encrypt() in /in/995aa:3 Stack trace: #0 {main} thrown in /in/995aa on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40: Fatal error: Call to undefined function openssl_encrypt() in /in/995aa on line 3
Process exited with code 255.

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