3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $input = "1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736"; echo $input . "\n"; echo hex2bin($input ^ a) . "\n"; ?>
based on MnpAL
Output for 7.2.0
1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736 Warning: Use of undefined constant a - assumed 'a' (this will throw an Error in a future version of PHP) in /in/6JlOm on line 6 Warning: hex2bin(): Hexadecimal input string must have an even length in /in/6JlOm on line 6
Output for 5.4.4 - 7.1.10
1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736 Notice: Use of undefined constant a - assumed 'a' in /in/6JlOm on line 6 Warning: hex2bin(): Hexadecimal input string must have an even length in /in/6JlOm on line 6
Output for 5.4.2 - 5.4.3
1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736 Notice: Use of undefined constant a - assumed 'a' in /in/6JlOm on line 6
Output for 5.3.18 - 5.3.29
1b37373331363f78151b7f2b783431333d78397828372d363c78373e783a393b3736 Fatal error: Call to undefined function hex2bin() in /in/6JlOm on line 6
Process exited with code 255.