3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "Hello World!"; $b = bin2hex($a); $c = pack('H*', $b); $d = hex2bin($c); var_dump($c, $d);
Output for 5.5.1 - 5.6.28, 7.0.0 - 7.1.0
Warning: hex2bin(): Input string must be hexadecimal string in /in/PFqkV on line 5 string(12) "Hello World!" bool(false)
Output for hhvm-3.10.0 - 3.13.2
Warning: hex2bin: malformed input in /in/PFqkV on line 5 string(12) "Hello World!" bool(false)
Output for 5.4.0 - 5.5.0
string(12) "Hello World!" bool(false)
Output for 5.0.0 - 5.3.29
Fatal error: Call to undefined function hex2bin() in /in/PFqkV on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: hex2bin() in /in/PFqkV on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: hex2bin() in /in/PFqkV on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: hex2bin() in /in/PFqkV on line 5