Online PHP editor | output for G87Ui

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Fatal error: Uncaught TypeError: strtolower(): Argument #1 ($string) must be of type string, array given in /in/G87Ui:9 Stack trace: #0 /in/G87Ui(9): strtolower(Array) #1 {main} thrown in /in/G87Ui on line 9
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: strtolower(): Argument #1 ($string) must be of type string, array given in /in/G87Ui:9 Stack trace: #0 /in/G87Ui(9): strtolower(Array) #1 {main} thrown in /in/G87Ui on line 9
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33: Warning: strtolower() expects parameter 1 to be string, array given in /in/G87Ui on line 9 Notice: Undefined index: in /in/G87Ui on line 9 string(4) "TEST" NULL
Output for 7.3.32 - 7.3.33: Warning: strtolower() expects parameter 1 to be string, array given in /in/G87Ui on line 9 string(4) "TEST" NULL
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Fatal error: Call to undefined function get_declared_traits() in /in/G87Ui on line 7
Process exited with code 255.
Output for 4.4.5 - 4.4.9: Fatal error: Call to undefined function: get_declared_interfaces() in /in/G87Ui on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4: Fatal error: Call to undefined function: get_declared_interfaces() in /in/G87Ui on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1: Fatal error: Call to undefined function: get_declared_interfaces() in /in/G87Ui on line 7