Online PHP editor | output for 9Zqql

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Warning: Undefined variable $check in /in/9Zqql on line 6 Fatal error: Uncaught Error: Call to a member function format() on null in /in/9Zqql:6 Stack trace: #0 {main} thrown in /in/9Zqql on line 6
Process exited with code 255.
Output for 7.0.5 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33: Notice: Undefined variable: check in /in/9Zqql on line 6 Fatal error: Uncaught Error: Call to a member function format() on null in /in/9Zqql:6 Stack trace: #0 {main} thrown in /in/9Zqql on line 6
Process exited with code 255.
Output for 7.3.32 - 7.3.33: Fatal error: Uncaught Error: Call to a member function format() on null in /in/9Zqql:6 Stack trace: #0 {main} thrown in /in/9Zqql on line 6
Process exited with code 255.
Output for 7.0.0 - 7.0.4: Notice: Undefined variable: check in /in/9Zqql on line 6 Fatal error: Uncaught Error: Call to a member function format() on unknown in /in/9Zqql:6 Stack trace: #0 {main} thrown in /in/9Zqql on line 6
Process exited with code 255.
Output for 5.6.7 - 5.6.28: Notice: Undefined variable: check in /in/9Zqql on line 6 Fatal error: Call to a member function format() on null in /in/9Zqql on line 6
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35: Notice: Undefined variable: check in /in/9Zqql on line 6 Fatal error: Call to a member function format() on a non-object in /in/9Zqql on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6: Fatal error: Class 'DateTime' not found in /in/9Zqql on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9: Fatal error: Cannot instantiate non-existent class: datetime in /in/9Zqql on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Cannot instantiate non-existent class: datetime in /in/9Zqql on line 3