3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $test = 'hi'; $url =& $test; echo $url."\n"; echo $test."\n"; $url = 'bob'; echo $url."\n"; echo $test."\n";
Output for 4.3.0 - 7.1.7, 7.1.20 - 7.2.6
hi hi bob bob
Output for 7.1.10

Process exited with code 137.