3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo substr( sha1( testperson4 ), 5, 17 );
based on XqQYJ
Output for 7.2.0
Warning: Use of undefined constant testperson4 - assumed 'testperson4' (this will throw an Error in a future version of PHP) in /in/r2KLO on line 2 ef83affa6c888ce1b
Output for 7.1.10

Process exited with code 137.
Output for 4.3.0 - 7.1.7
Notice: Use of undefined constant testperson4 - assumed 'testperson4' in /in/r2KLO on line 2 ef83affa6c888ce1b