3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $variable = 'toto'; $toto = 'bar'; echo $$variable, PHP_EOL; // bar
Output for 4.3.10 - 4.4.9, 5.0.2 - 5.0.5, 5.1.1 - 7.1.0
bar
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/tR3Kp on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
bar Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/tR3Kp on line 6 PHP_EOL