3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump( ${!${''} = (function(){return 'str';})()}; );
based on LKiGU
Output for 7.0.0 - 7.0.2
Parse error: syntax error, unexpected ';', expecting ',' or ')' in /in/VuHcN on line 4
Process exited with code 255.
Output for 5.3.21 - 5.6.17
Parse error: syntax error, unexpected '(' in /in/VuHcN on line 4
Process exited with code 255.