3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $_123 = 'a'.PHP_EOL; echo $_123;
Output for 4.3.10 - 4.4.9, 5.0.2 - 7.1.0
a
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/5Vi7g on line 2 aPHP_EOL