3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php mkdir("./isd_rchy", 0700); echo realpath('./');
Output for 5.2.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Warning: mkdir(): Permission denied in /in/Ekckc on line 2 /
Output for 5.0.0 - 5.2.2
Warning: mkdir(): Read-only file system in /in/Ekckc on line 2 /in
Output for 4.3.2 - 4.4.9
Warning: mkdir(./isd_rchy): Read-only file system in /in/Ekckc on line 2 /in
Output for 4.3.0 - 4.3.1
Warning: mkdir(./isd_rchy) [http://www.php.net/function.mkdir]: Read-only file system in /in/Ekckc on line 2 /in