3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo (strtotime( "previous monday",date('Y-m-d')));
Output for 5.1.0 - 7.1.0
Notice: A non well formed numeric value encountered in /in/oa58Q on line 2 -262800
Output for 4.3.0 - 5.0.5
-1