Online PHP editor | output for pTuPb

Output for 8.3.0 - 8.3.6: Fatal error: Uncaught Error: preg_replace(): Argument #5 ($count) could not be passed by reference in /in/pTuPb:3 Stack trace: #0 {main} thrown in /in/pTuPb on line 3
Process exited with code 255.
Output for 8.1.23 - 8.1.28, 8.2.10 - 8.2.18: Fatal error: Uncaught Error: preg_replace(): Argument #5 ($count) cannot be passed by reference in /in/pTuPb:3 Stack trace: #0 {main} thrown in /in/pTuPb on line 3
Process exited with code 255.
Output for 5.1.3 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.32: Fatal error: Only variables can be passed by reference in /in/pTuPb on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.2: string(16) "nödkåpa blabla"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5: Warning: Wrong parameter count for preg_replace() in /in/pTuPb on line 3 NULL