Online PHP editor | output for F9bIm

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: Notice: Only variables should be passed by reference in /in/F9bIm on line 9 Fatal error: Uncaught TypeError: implode(): Argument #2 ($array) must be of type ?array, string given in /in/F9bIm:9 Stack trace: #0 /in/F9bIm(9): implode('/', 'index.php') #1 {main} thrown in /in/F9bIm on line 9
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33: Notice: Only variables should be passed by reference in /in/F9bIm on line 9 Warning: implode(): Invalid arguments passed in /in/F9bIm on line 9 Array ( [scheme] => http [host] => www.unl.edu [path] => )
Output for 7.3.32 - 7.3.33, 7.4.26: Warning: implode(): Invalid arguments passed in /in/F9bIm on line 9 Array ( [scheme] => http [host] => www.unl.edu [path] => )
Output for 5.2.5 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28: Strict Standards: Only variables should be passed by reference in /in/F9bIm on line 9 Warning: implode(): Invalid arguments passed in /in/F9bIm on line 9 Array ( [scheme] => http [host] => www.unl.edu [path] => )
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.4: Strict Standards: Only variables should be passed by reference in /in/F9bIm on line 9 Warning: implode(): Bad arguments. in /in/F9bIm on line 9 Array ( [scheme] => http [host] => www.unl.edu [path] => )
Output for 5.0.5: Fatal error: Only variables can be passed by reference in /in/F9bIm on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.4: Warning: implode(): Bad arguments. in /in/F9bIm on line 9 Array ( [scheme] => http [host] => www.unl.edu [path] => )
Output for 4.3.0 - 4.3.1: Warning: implode() [http://www.php.net/function.implode]: Bad arguments. in /in/F9bIm on line 9 Array ( [scheme] => http [host] => www.unl.edu [path] => )