3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $f = "file/".date(Y-m)."_log"; echo $f;
Output for 7.2.0
Warning: Use of undefined constant Y - assumed 'Y' (this will throw an Error in a future version of PHP) in /in/JiBCD on line 3 Warning: Use of undefined constant m - assumed 'm' (this will throw an Error in a future version of PHP) in /in/JiBCD on line 3 Warning: A non-numeric value encountered in /in/JiBCD on line 3 Warning: A non-numeric value encountered in /in/JiBCD on line 3 file/0_log
Output for 7.1.0 - 7.1.10
Notice: Use of undefined constant Y - assumed 'Y' in /in/JiBCD on line 3 Notice: Use of undefined constant m - assumed 'm' in /in/JiBCD on line 3 Warning: A non-numeric value encountered in /in/JiBCD on line 3 Warning: A non-numeric value encountered in /in/JiBCD on line 3 file/0_log
Output for 5.5.0 - 7.0.20
Notice: Use of undefined constant Y - assumed 'Y' in /in/JiBCD on line 3 Notice: Use of undefined constant m - assumed 'm' in /in/JiBCD on line 3 file/0_log