3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php hash_equals('', null); hash_equals(null, '');
Output for 5.6.0 - 7.1.0
Warning: hash_equals(): Expected user_string to be a string, null given in /in/oKhU5 on line 2 Warning: hash_equals(): Expected known_string to be a string, null given in /in/oKhU5 on line 3
Output for 5.0.0 - 5.5.38
Fatal error: Call to undefined function hash_equals() in /in/oKhU5 on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: hash_equals() in /in/oKhU5 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: hash_equals() in /in/oKhU5 on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: hash_equals() in /in/oKhU5 on line 2