Fatal error: Uncaught TypeError: array_search(): Argument #2 ($haystack) must be of type array, string given in /in/5jPfh:5
Stack trace:
#0 /in/5jPfh(5): array_search(Array, 'mon')
#1 {main}
thrown in /in/5jPfh on line 5
Process exited with code 255.