Online PHP editor | output for aNqHl

Output for 8.3.0 - 8.3.6: Fatal error: Uncaught TypeError: session_set_save_handler(): Argument #1 ($open) must be a valid callback, class Closure does not have a method "open" in /in/aNqHl:3 Stack trace: #0 /in/aNqHl(3): session_set_save_handler(Array, Array, Array, Array, Array, Array) #1 {main} thrown in /in/aNqHl on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18: Fatal error: Uncaught TypeError: session_set_save_handler(): Argument #1 ($open) must be a valid callback, function "Closure::open" not found or invalid function name in /in/aNqHl:3 Stack trace: #0 /in/aNqHl(3): session_set_save_handler(Array, Array, Array, Array, Array, Array) #1 {main} thrown in /in/aNqHl on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33: Warning: session_set_save_handler(): Argument 1 is not a valid callback in /in/aNqHl on line 3
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17: Parse error: syntax error, unexpected T_FUNCTION in /in/aNqHl on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected T_FUNCTION in /in/aNqHl on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/aNqHl on line 2
Process exited with code 255.