3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(__DIR__); var_dump(realpath(null), realpath(false), realpath(''));
based on rNU40
Output for 5.3.0 - 7.2.0
string(3) "/in" string(1) "/" string(1) "/" string(1) "/"
Output for 5.2.3 - 5.2.17
Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in /in/AZp6W on line 3 string(7) "__DIR__" string(1) "/" string(1) "/" string(1) "/"
Output for 5.2.1 - 5.2.2
Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in /in/AZp6W on line 3 string(7) "__DIR__" string(3) "/in" string(3) "/in" string(3) "/in"
Output for 4.3.0 - 5.2.0
Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in /in/AZp6W on line 3 string(7) "__DIR__" bool(false) bool(false) bool(false)