3v4l.org

run code in 300+ PHP versions simultaneously
<?php $week_start=(new DateTime())->format('Y,W'); $week_start_var=(new DateTime())->format('Y,W'); $week_start->setISODate($week_start_var); echo $week_start->format('D Y-m-d');
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to a member function setISODate() on string in /in/IC73W:4 Stack trace: #0 {main} thrown in /in/IC73W on line 4
Process exited with code 255.
Output for 5.6.8 - 5.6.28
Fatal error: Call to a member function setISODate() on string in /in/IC73W on line 4
Process exited with code 255.
Output for 5.5.24 - 5.5.35
Fatal error: Call to a member function setISODate() on a non-object in /in/IC73W on line 4
Process exited with code 255.
preferences:
186.75 ms | 401 KiB | 197 Q